Revert "Do not persist user/group/project quota zap objects when unneeded"

This reverts commit 797f55ef12.
2023-10-23 09:14:46 -07:00
675 changed files with 13173 additions and 39787 deletions
--- a/.github/codeql-cpp.yml
+++ b/.github/codeql-cpp.yml
@ -1,4 +0,0 @@
-name: "Custom CodeQL Analysis"
-
-queries:
-  - uses: ./.github/codeql/custom-queries/cpp/deprecatedFunctionUsage.ql
--- a/.github/codeql-python.yml
+++ b/.github/codeql-python.yml
@ -1,4 +0,0 @@
-name: "Custom CodeQL Analysis"
-
-paths-ignore:
-  - tests
--- a/.github/codeql/custom-queries/cpp/deprecatedFunctionUsage.ql
+++ b/.github/codeql/custom-queries/cpp/deprecatedFunctionUsage.ql
@ -1,59 +0,0 @@
-/**
- * @name Deprecated function usage detection
- * @description Detects functions whose usage is banned from the OpenZFS
- *              codebase due to QA concerns.
- * @kind problem
- * @severity error
- * @id cpp/deprecated-function-usage
-*/
-
-import cpp
-
-predicate isDeprecatedFunction(Function f) {
-  f.getName() = "strtok" or
-  f.getName() = "__xpg_basename" or
-  f.getName() = "basename" or
-  f.getName() = "dirname" or
-  f.getName() = "bcopy" or
-  f.getName() = "bcmp" or
-  f.getName() = "bzero" or
-  f.getName() = "asctime" or
-  f.getName() = "asctime_r" or
-  f.getName() = "gmtime" or
-  f.getName() = "localtime" or
-  f.getName() = "strncpy"
-
-}
-
-string getReplacementMessage(Function f) {
-  if f.getName() = "strtok" then
-    result = "Use strtok_r(3) instead!"
-  else if f.getName() = "__xpg_basename" then
-    result = "basename(3) is underspecified. Use zfs_basename() instead!"
-  else if f.getName() = "basename" then
-    result = "basename(3) is underspecified. Use zfs_basename() instead!"
-  else if f.getName() = "dirname" then
-    result = "dirname(3) is underspecified. Use zfs_dirnamelen() instead!"
-  else if f.getName() = "bcopy" then
-    result = "bcopy(3) is deprecated. Use memcpy(3)/memmove(3) instead!"
-  else if f.getName() = "bcmp" then
-    result = "bcmp(3) is deprecated. Use memcmp(3) instead!"
-  else if f.getName() = "bzero" then
-    result = "bzero(3) is deprecated. Use memset(3) instead!"
-  else if f.getName() = "asctime" then
-    result = "Use strftime(3) instead!"
-  else if f.getName() = "asctime_r" then
-    result = "Use strftime(3) instead!"
-  else if f.getName() = "gmtime" then
-    result = "gmtime(3) isn't thread-safe. Use gmtime_r(3) instead!"
-  else if f.getName() = "localtime" then
-    result = "localtime(3) isn't thread-safe. Use localtime_r(3) instead!"
-  else
-    result = "strncpy(3) is deprecated. Use strlcpy(3) instead!"
-}
-
-from FunctionCall fc, Function f
-where
-  fc.getTarget() = f and
-  isDeprecatedFunction(f)
-select fc, getReplacementMessage(f)
--- a/.github/codeql/custom-queries/cpp/qlpack.yml
+++ b/.github/codeql/custom-queries/cpp/qlpack.yml
@ -1,4 +0,0 @@
-name: openzfs-cpp-queries
-version: 0.0.0
-libraryPathDependencies: codeql-cpp
-suites: openzfs-cpp-suite
--- a/.github/workflows/README.md
+++ b/.github/workflows/README.md
@ -4,54 +4,44 @@
 ```mermaid
 flowchart TB
 subgraph CleanUp and Summary
-  CleanUp+Summary
+  Part1-20.04-->CleanUp+nice+Summary
+  Part2-20.04-->CleanUp+nice+Summary
+  PartN-20.04-->CleanUp+nice+Summary
+  Part1-22.04-->CleanUp+nice+Summary
+  Part2-22.04-->CleanUp+nice+Summary
+  PartN-22.04-->CleanUp+nice+Summary
 end

 subgraph Functional Testings
-  sanity-checks-20.04
-  zloop-checks-20.04
  functional-testing-20.04-->Part1-20.04
  functional-testing-20.04-->Part2-20.04
-  functional-testing-20.04-->Part3-20.04
-  functional-testing-20.04-->Part4-20.04
+  functional-testing-20.04-->PartN-20.04
  functional-testing-22.04-->Part1-22.04
  functional-testing-22.04-->Part2-22.04
-  functional-testing-22.04-->Part3-22.04
-  functional-testing-22.04-->Part4-22.04
-  sanity-checks-22.04
-  zloop-checks-22.04
+  functional-testing-22.04-->PartN-22.04
+end
+
+subgraph Sanity and zloop Testings
+  sanity-checks-20.04-->functional-testing-20.04
+  sanity-checks-22.04-->functional-testing-22.04
+  zloop-checks-20.04-->functional
+  zloop-checks-22.04-->functional
 end

 subgraph Code Checking + Building
-  Build-Ubuntu-20.04
  codeql.yml
  checkstyle.yml
-  Build-Ubuntu-22.04
-end
-
  Build-Ubuntu-20.04-->sanity-checks-20.04
-  Build-Ubuntu-20.04-->zloop-checks-20.04
-  Build-Ubuntu-20.04-->functional-testing-20.04
  Build-Ubuntu-22.04-->sanity-checks-22.04
+  Build-Ubuntu-20.04-->zloop-checks-20.04
  Build-Ubuntu-22.04-->zloop-checks-22.04
-  Build-Ubuntu-22.04-->functional-testing-22.04
-
-  sanity-checks-20.04-->CleanUp+Summary
-  Part1-20.04-->CleanUp+Summary
-  Part2-20.04-->CleanUp+Summary
-  Part3-20.04-->CleanUp+Summary
-  Part4-20.04-->CleanUp+Summary
-  Part1-22.04-->CleanUp+Summary
-  Part2-22.04-->CleanUp+Summary
-  Part3-22.04-->CleanUp+Summary
-  Part4-22.04-->CleanUp+Summary
-  sanity-checks-22.04-->CleanUp+Summary
+end
 ```


 1) build zfs modules for Ubuntu 20.04 and 22.04 (~15m)
 2) 2x zloop test (~10m) + 2x sanity test (~25m)
-3) 4x functional testings in parts 1..4 (each ~1h)
+3) functional testings in parts 1..5 (each ~1h)
 4) cleanup and create summary
   - content of summary depends on the results of the steps

--- a/.github/workflows/checkstyle.yaml
+++ b/.github/workflows/checkstyle.yaml
@ -8,7 +8,7 @@ jobs:
  checkstyle:
    runs-on: ubuntu-22.04
    steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v3
      with:
        ref: ${{ github.event.pull_request.head.sha }}
    - name: Install dependencies
@ -52,7 +52,7 @@ jobs:
      if: failure() && steps.CheckABI.outcome == 'failure'
      run: |
        find -name *.abi | tar -cf abi_files.tar -T -
-    - uses: actions/upload-artifact@v4
+    - uses: actions/upload-artifact@v3
      if: failure() && steps.CheckABI.outcome == 'failure'
      with:
        name: New ABI files (use only if you're sure about interface changes)
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@ -24,12 +24,11 @@ jobs:
        echo "MAKEFLAGS=-j$(nproc)" >> $GITHUB_ENV

    - name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v3

    - name: Initialize CodeQL
      uses: github/codeql-action/init@v2
      with:
-        config-file: .github/codeql-${{ matrix.language }}.yml
        languages: ${{ matrix.language }}

    - name: Autobuild
--- a/.github/workflows/scripts/generate-summary.sh
+++ b/.github/workflows/scripts/generate-summary.sh
@ -87,7 +87,7 @@ function summarize_f() {
  output "\n## $headline\n"
  rm -rf testfiles
  for i in $(seq 1 $FUNCTIONAL_PARTS); do
-    tarfile="$2-part$i/part$i.tar"
+    tarfile="$2/part$i.tar"
    check_tarfile "$tarfile"
    check_logfile "testfiles/log"
  done
--- a/.github/workflows/scripts/setup-dependencies.sh
+++ b/.github/workflows/scripts/setup-dependencies.sh
@ -55,24 +55,29 @@ function mod_install() {
  cat /proc/spl/kstat/zfs/chksum_bench
  echo "::endgroup::"

-  echo "::group::Optimize storage for ZFS testings"
-  # remove swap and umount fast storage
-  # 89GiB -> rootfs + bootfs with ~80MB/s -> don't care
-  # 64GiB -> /mnt with 420MB/s -> new testing ssd
-  sudo swapoff -a
+  echo "::group::Reclaim and report disk space"
+  # remove 4GiB of images
+  sudo systemd-run docker system prune --force --all --volumes

-  # this one is fast and mounted @ /mnt
-  # -> we reformat with ext4 + move it to /var/tmp
-  DEV="/dev/disk/azure/resource-part1"
-  sudo umount /mnt
-  sudo mkfs.ext4 -O ^has_journal -F $DEV
-  sudo mount -o noatime,barrier=0 $DEV /var/tmp
-  sudo chmod 1777 /var/tmp
+  # remove unused software
+  sudo systemd-run --wait rm -rf \
+    "$AGENT_TOOLSDIRECTORY" \
+    /opt/* \
+    /usr/local/* \
+    /usr/share/az* \
+    /usr/share/dotnet \
+    /usr/share/gradle* \
+    /usr/share/miniconda \
+    /usr/share/swift \
+    /var/lib/gems \
+    /var/lib/mysql \
+    /var/lib/snapd
+
+  # trim the cleaned space
+  sudo fstrim /

  # disk usage afterwards
-  sudo df -h /
-  sudo df -h /var/tmp
-  sudo fstrim -a
+  df -h /
  echo "::endgroup::"
 }

--- a/.github/workflows/zfs-linux-tests.yml
+++ b/.github/workflows/zfs-linux-tests.yml
@ -13,10 +13,10 @@ jobs:
  zloop:
    runs-on: ubuntu-${{ inputs.os }}
    steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v3
      with:
        ref: ${{ github.event.pull_request.head.sha }}
-    - uses: actions/download-artifact@v4
+    - uses: actions/download-artifact@v3
      with:
        name: modules-${{ inputs.os }}
    - name: Install modules
@ -34,19 +34,19 @@ jobs:
      if: failure()
      run: |
        sudo chmod +r -R /var/tmp/zloop/
-    - uses: actions/upload-artifact@v4
+    - uses: actions/upload-artifact@v3
      if: failure()
      with:
-        name: Zloop-logs-${{ inputs.os }}
+        name: Zpool-logs-${{ inputs.os }}
        path: |
          /var/tmp/zloop/*/
          !/var/tmp/zloop/*/vdev/
        retention-days: 14
        if-no-files-found: ignore
-    - uses: actions/upload-artifact@v4
+    - uses: actions/upload-artifact@v3
      if: failure()
      with:
-        name: Zloop-files-${{ inputs.os }}
+        name: Zpool-files-${{ inputs.os }}
        path: |
          /var/tmp/zloop/*/vdev/
        retention-days: 14
@ -55,10 +55,10 @@ jobs:
  sanity:
    runs-on: ubuntu-${{ inputs.os }}
    steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v3
      with:
        ref: ${{ github.event.pull_request.head.sha }}
-    - uses: actions/download-artifact@v4
+    - uses: actions/download-artifact@v3
      with:
        name: modules-${{ inputs.os }}
    - name: Install modules
@ -77,7 +77,7 @@ jobs:
        RESPATH="/var/tmp/test_results"
        mv -f $RESPATH/current $RESPATH/testfiles
        tar cf $RESPATH/sanity.tar -h -C $RESPATH testfiles
-    - uses: actions/upload-artifact@v4
+    - uses: actions/upload-artifact@v3
      if: success() || failure()
      with:
        name: Logs-${{ inputs.os }}-sanity
@ -91,10 +91,10 @@ jobs:
      matrix:
        tests: [ part1, part2, part3, part4 ]
    steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v3
      with:
        ref: ${{ github.event.pull_request.head.sha }}
-    - uses: actions/download-artifact@v4
+    - uses: actions/download-artifact@v3
      with:
        name: modules-${{ inputs.os }}
    - name: Install modules
@ -116,9 +116,9 @@ jobs:
        RESPATH="/var/tmp/test_results"
        mv -f $RESPATH/current $RESPATH/testfiles
        tar cf $RESPATH/${{ matrix.tests }}.tar -h -C $RESPATH testfiles
-    - uses: actions/upload-artifact@v4
+    - uses: actions/upload-artifact@v3
      if: success() || failure()
      with:
-        name: Logs-${{ inputs.os }}-functional-${{ matrix.tests }}
+        name: Logs-${{ inputs.os }}-functional
        path: /var/tmp/test_results/${{ matrix.tests }}.tar
        if-no-files-found: ignore
--- a/.github/workflows/zfs-linux.yml
+++ b/.github/workflows/zfs-linux.yml
@ -14,14 +14,14 @@ jobs:
        os: [20.04, 22.04]
    runs-on: ubuntu-${{ matrix.os }}
    steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v3
      with:
        ref: ${{ github.event.pull_request.head.sha }}
    - name: Build modules
      run: .github/workflows/scripts/setup-dependencies.sh build
    - name: Prepare modules upload
      run: tar czf modules-${{ matrix.os }}.tgz *.deb .github tests/test-runner tests/ImageOS.txt
-    - uses: actions/upload-artifact@v4
+    - uses: actions/upload-artifact@v3
      with:
        name: modules-${{ matrix.os }}
        path: modules-${{ matrix.os }}.tgz
@ -44,7 +44,7 @@ jobs:
    runs-on: ubuntu-22.04
    needs: testings
    steps:
-    - uses: actions/download-artifact@v4
+    - uses: actions/download-artifact@v3
    - name: Generating summary
      run: |
        tar xzf modules-22.04/modules-22.04.tgz .github tests
@ -58,7 +58,7 @@ jobs:
      run: .github/workflows/scripts/generate-summary.sh 3
    - name: Summary for errors #4
      run: .github/workflows/scripts/generate-summary.sh 4
-    - uses: actions/upload-artifact@v4
+    - uses: actions/upload-artifact@v3
      with:
        name: Summary Files
        path: Summary/
--- a/.gitignore
+++ b/.gitignore
@ -83,7 +83,6 @@
 modules.order
 Makefile
 Makefile.in
-changelog
 *.patch
 *.orig
 *.tmp
--- a/.mailmap
+++ b/.mailmap
@ -30,7 +30,6 @@ Andreas Dilger <adilger@dilger.ca>
 Andrew Walker <awalker@ixsystems.com>
 Benedikt Neuffer <github@itfriend.de>
 Chengfei Zhu <chengfeix.zhu@intel.com>
-ChenHao Lu <18302010006@fudan.edu.cn>
 Chris Lindee <chris.lindee+github@gmail.com>
 Colm Buckley <colm@tuatha.org>
 Crag Wang <crag0715@gmail.com>
@ -44,7 +43,6 @@ Glenn Washburn <development@efficientek.com>
 Gordan Bobic <gordan.bobic@gmail.com>
 Gregory Bartholomew <gregory.lee.bartholomew@gmail.com>
 hedong zhang <h_d_zhang@163.com>
-Ilkka Sovanto <github@ilkka.kapsi.fi>
 InsanePrawn <Insane.Prawny@gmail.com>
 Jason Cohen <jwittlincohen@gmail.com>
 Jason Harmening <jason.harmening@gmail.com>
@ -59,7 +57,6 @@ KernelOfTruth <kerneloftruth@gmail.com>
 Liu Hua <liu.hua130@zte.com.cn>
 Liu Qing <winglq@gmail.com>
 loli10K <ezomori.nozomu@gmail.com>
-Mart Frauenlob <allkind@fastest.cc>
 Matthias Blankertz <matthias@blankertz.org>
 Michael Gmelin <grembo@FreeBSD.org>
 Olivier Mazouffre <olivier.mazouffre@ims-bordeaux.fr>
@ -76,12 +73,6 @@ WHR <msl0000023508@gmail.com>
 Yanping Gao <yanping.gao@xtaotech.com>
 Youzhong Yang <youzhong@gmail.com>

-# Signed-off-by: overriding Author:
-Ryan <errornointernet@envs.net> <error.nointernet@gmail.com>
-Qiuhao Chen <chenqiuhao1997@gmail.com> <haohao0924@126.com>
-Yuxin Wang <yuxinwang9999@gmail.com> <Bi11gates9999@gmail.com>
-Zhenlei Huang <zlei@FreeBSD.org> <zlei.huang@gmail.com>
-
 # Commits from strange places, long ago
 Brian Behlendorf <behlendorf1@llnl.gov> <behlendo@7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c>
 Brian Behlendorf <behlendorf1@llnl.gov> <behlendo@fedora-17-amd64.(none)>
@ -98,7 +89,6 @@ Alek Pinchuk <apinchuk@axcient.com> <alek-p@users.noreply.github.com>
 Alexander Lobakin <alobakin@pm.me> <solbjorn@users.noreply.github.com>
 Alexey Smirnoff <fling@member.fsf.org> <fling-@users.noreply.github.com>
 Allen Holl <allen.m.holl@gmail.com> <65494904+allen-4@users.noreply.github.com>
-Alphan Yılmaz <alphanyilmaz@gmail.com> <a1ea321@users.noreply.github.com>
 Ameer Hamza <ahamza@ixsystems.com> <106930537+ixhamza@users.noreply.github.com>
 Andrew J. Hesford <ajh@sideband.org> <48421688+ahesford@users.noreply.github.com>>
 Andrew Sun <me@andrewsun.com> <as-com@users.noreply.github.com>
@ -106,22 +96,18 @@ Aron Xu <happyaron.xu@gmail.com> <happyaron@users.noreply.github.com>
 Arun KV <arun.kv@datacore.com> <65647132+arun-kv@users.noreply.github.com>
 Ben Wolsieffer <benwolsieffer@gmail.com> <lopsided98@users.noreply.github.com>
 bernie1995 <bernie.pikes@gmail.com> <42413912+bernie1995@users.noreply.github.com>
-Bojan Novković <bnovkov@FreeBSD.org> <72801811+bnovkov@users.noreply.github.com>
 Boris Protopopov <boris.protopopov@actifio.com> <bprotopopov@users.noreply.github.com>
 Brad Forschinger <github@bnjf.id.au> <bnjf@users.noreply.github.com>
 Brandon Thetford <brandon@dodecatec.com> <dodexahedron@users.noreply.github.com>
 buzzingwires <buzzingwires@outlook.com> <131118055+buzzingwires@users.noreply.github.com>
 Cedric Maunoury <cedric.maunoury@gmail.com> <38213715+cedricmaunoury@users.noreply.github.com>
 Charles Suh <charles.suh@gmail.com> <charlessuh@users.noreply.github.com>
-Chris Peredun <chris.peredun@ixsystems.com> <126915832+chrisperedun@users.noreply.github.com>
 Dacian Reece-Stremtan <dacianstremtan@gmail.com> <35844628+dacianstremtan@users.noreply.github.com>
 Damian Szuberski <szuberskidamian@gmail.com> <30863496+szubersk@users.noreply.github.com>
 Daniel Hiepler <d-git@coderdu.de> <32984777+heeplr@users.noreply.github.com>
 Daniel Kobras <d.kobras@science-computing.de> <sckobras@users.noreply.github.com>
 Daniel Reichelt <hacking@nachtgeist.net> <nachtgeist@users.noreply.github.com>
 David Quigley <david.quigley@intel.com> <dpquigl@users.noreply.github.com>
-Dennis R. Friedrichsen <dennis.r.friedrichsen@gmail.com> <31087738+dennisfriedrichsen@users.noreply.github.com>
-Dex Wood <slash2314@gmail.com> <slash2314@users.noreply.github.com>
 DHE <git@dehacked.net> <DeHackEd@users.noreply.github.com>
 Dmitri John Ledkov <dimitri.ledkov@canonical.com> <19779+xnox@users.noreply.github.com>
 Dries Michiels <driesm.michiels@gmail.com> <32487486+driesmp@users.noreply.github.com>
@ -142,7 +128,6 @@ Harry Mallon <hjmallon@gmail.com> <1816667+hjmallon@users.noreply.github.com>
 Hiếu Lê <leorize+oss@disroot.org> <alaviss@users.noreply.github.com>
 Jake Howard <git@theorangeone.net> <RealOrangeOne@users.noreply.github.com>
 James Cowgill <james.cowgill@mips.com> <jcowgill@users.noreply.github.com>
-Jaron Kent-Dobias <jaron@kent-dobias.com> <kentdobias@users.noreply.github.com>
 Jason King <jason.king@joyent.com> <jasonbking@users.noreply.github.com>
 Jeff Dike <jdike@akamai.com> <52420226+jdike@users.noreply.github.com>
 Jitendra Patidar <jitendra.patidar@nutanix.com> <53164267+jsai20@users.noreply.github.com>
@ -152,9 +137,7 @@ John L. Hammond <john.hammond@intel.com> <35266395+jhammond-intel@users.noreply.
 John-Mark Gurney <jmg@funkthat.com> <jmgurney@users.noreply.github.com>
 John Ramsden <johnramsden@riseup.net> <johnramsden@users.noreply.github.com>
 Jonathon Fernyhough <jonathon@m2x.dev> <559369+jonathonf@users.noreply.github.com>
-Jose Luis Duran <jlduran@gmail.com> <jlduran@users.noreply.github.com>
 Justin Hibbits <chmeeedalf@gmail.com> <chmeeedalf@users.noreply.github.com>
-Kevin Greene <kevin.greene@delphix.com> <104801862+kxgreene@users.noreply.github.com>
 Kevin Jin <lostking2008@hotmail.com> <33590050+jxdking@users.noreply.github.com>
 Kevin P. Fleming <kevin@km6g.us> <kpfleming@users.noreply.github.com>
 Krzysztof Piecuch <piecuch@kpiecuch.pl> <3964215+pikrzysztof@users.noreply.github.com>
@ -165,11 +148,9 @@ Lorenz Hüdepohl <dev@stellardeath.org> <lhuedepohl@users.noreply.github.com>
 Luís Henriques <henrix@camandro.org> <73643340+lumigch@users.noreply.github.com>
 Marcin Skarbek <git@skarbek.name> <mskarbek@users.noreply.github.com>
 Matt Fiddaman <github@m.fiddaman.uk> <81489167+matt-fidd@users.noreply.github.com>
-Maxim Filimonov <che@bein.link> <part1zano@users.noreply.github.com>
 Max Zettlmeißl <max@zettlmeissl.de> <6818198+maxz@users.noreply.github.com>
 Michael Niewöhner <foss@mniewoehner.de> <c0d3z3r0@users.noreply.github.com>
 Michael Zhivich <mzhivich@akamai.com> <33133421+mzhivich@users.noreply.github.com>
-MigeljanImeri <ImeriMigel@gmail.com> <78048439+MigeljanImeri@users.noreply.github.com>
 Mo Zhou <cdluminate@gmail.com> <5723047+cdluminate@users.noreply.github.com>
 Nick Mattis <nickm970@gmail.com> <nmattis@users.noreply.github.com>
 omni <omni+vagant@hack.org> <79493359+omnivagant@users.noreply.github.com>
@ -183,7 +164,6 @@ Ping Huang <huangping@smartx.com> <101400146+hpingfs@users.noreply.github.com>
 Piotr P. Stefaniak <pstef@freebsd.org> <pstef@users.noreply.github.com>
 Richard Allen <belperite@gmail.com> <33836503+belperite@users.noreply.github.com>
 Rich Ercolani <rincebrain@gmail.com> <214141+rincebrain@users.noreply.github.com>
-Rick Macklem <rmacklem@uoguelph.ca> <64620010+rmacklem@users.noreply.github.com>
 Rob Wing <rob.wing@klarasystems.com> <98866084+rob-wing@users.noreply.github.com>
 Roman Strashkin <roman.strashkin@nexenta.com> <Ramzec@users.noreply.github.com>
 Ryan Hirasaki <ryanhirasaki@gmail.com> <4690732+RyanHir@users.noreply.github.com>
@ -194,17 +174,13 @@ Scott Colby <scott@scolby.com> <scolby33@users.noreply.github.com>
 Sean Eric Fagan <kithrup@mac.com> <kithrup@users.noreply.github.com>
 Spencer Kinny <spencerkinny1995@gmail.com> <30333052+Spencer-Kinny@users.noreply.github.com>
 Srikanth N S <srikanth.nagasubbaraoseetharaman@hpe.com> <75025422+nssrikanth@users.noreply.github.com>
-Stefan Lendl <s.lendl@proxmox.com> <1321542+stfl@users.noreply.github.com>
-Thomas Bertschinger <bertschinger@lanl.gov> <101425190+bertschinger@users.noreply.github.com>
 Thomas Geppert <geppi@digitx.de> <geppi@users.noreply.github.com>
 Tim Crawford <tcrawford@datto.com> <crawfxrd@users.noreply.github.com>
-Todd Seidelmann <18294602+seidelma@users.noreply.github.com>
 Tom Matthews <tom@axiom-partners.com> <tomtastic@users.noreply.github.com>
 Tony Perkins <tperkins@datto.com> <62951051+tony-zfs@users.noreply.github.com>
 Torsten Wörtwein <twoertwein@gmail.com> <twoertwein@users.noreply.github.com>
 Tulsi Jain <tulsi.jain@delphix.com> <TulsiJain@users.noreply.github.com>
 Václav Skála <skala@vshosting.cz> <33496485+vaclavskala@users.noreply.github.com>
-Vaibhav Bhanawat <vaibhav.bhanawat@delphix.com> <88050553+vaibhav-delphix@users.noreply.github.com>
 Violet Purcell <vimproved@inventati.org> <66446404+vimproved@users.noreply.github.com>
 Vipin Kumar Verma <vipin.verma@hpe.com> <75025470+vermavipinkumar@users.noreply.github.com>
 Wolfgang Bumiller <w.bumiller@proxmox.com> <Blub@users.noreply.github.com>
--- a/48
+++ b/48
@ -46,7 +46,6 @@ CONTRIBUTORS:
    Alex Zhuravlev <alexey.zhuravlev@intel.com>
    Allan Jude <allanjude@freebsd.org>
    Allen Holl <allen.m.holl@gmail.com>
-    Alphan Yılmaz <alphanyilmaz@gmail.com>
    alteriks <alteriks@gmail.com>
    Alyssa Ross <hi@alyssa.is>
    Ameer Hamza <ahamza@ixsystems.com>
@ -89,18 +88,15 @@ CONTRIBUTORS:
    Bassu <bassu@phi9.com>
    Ben Allen <bsallen@alcf.anl.gov>
    Ben Cordero <bencord0@condi.me>
-    Benda Xu <orv@debian.org>
    Benedikt Neuffer <github@itfriend.de>
    Benjamin Albrecht <git@albrecht.io>
    Benjamin Gentil <benjgentil.pro@gmail.com>
-    Benjamin Sherman <benjamin@holyarmy.org>
    Ben McGough <bmcgough@fredhutch.org>
    Ben Rubson <ben.rubson@gmail.com>
    Ben Wolsieffer <benwolsieffer@gmail.com>
    bernie1995 <bernie.pikes@gmail.com>
    Bill McGonigle <bill-github.com-public1@bfccomputing.com>
    Bill Pijewski <wdp@joyent.com>
-    Bojan Novković <bnovkov@FreeBSD.org>
    Boris Protopopov <boris.protopopov@nexenta.com>
    Brad Forschinger <github@bnjf.id.au>
    Brad Lewis <brad.lewis@delphix.com>
@ -115,7 +111,6 @@ CONTRIBUTORS:
    bzzz77 <bzzz.tomas@gmail.com>
    cable2999 <cable2999@users.noreply.github.com>
    Caleb James DeLisle <calebdelisle@lavabit.com>
-    Cameron Harr <harr1@llnl.gov>
    Cao Xuewen <cao.xuewen@zte.com.cn>
    Carlo Landmeter <clandmeter@gmail.com>
    Carlos Alberto Lopez Perez <clopez@igalia.com>
@ -125,15 +120,12 @@ CONTRIBUTORS:
    Chen Can <chen.can2@zte.com.cn>
    Chengfei Zhu <chengfeix.zhu@intel.com>
    Chen Haiquan <oc@yunify.com>
-    ChenHao Lu <18302010006@fudan.edu.cn>
    Chip Parker <aparker@enthought.com>
    Chris Burroughs <chris.burroughs@gmail.com>
-    Chris Davidson <christopher.davidson@gmail.com>
    Chris Dunlap <cdunlap@llnl.gov>
    Chris Dunlop <chris@onthe.net.au>
    Chris Lindee <chris.lindee+github@gmail.com>
    Chris McDonough <chrism@plope.com>
-    Chris Peredun <chris.peredun@ixsystems.com>
    Chris Siden <chris.siden@delphix.com>
    Chris Siebenmann <cks.github@cs.toronto.edu>
    Christer Ekholm <che@chrekh.se>
@ -152,7 +144,6 @@ CONTRIBUTORS:
    Clint Armstrong <clint@clintarmstrong.net>
    Coleman Kane <ckane@colemankane.org>
    Colin Ian King <colin.king@canonical.com>
-    Colin Percival <cperciva@tarsnap.com>
    Colm Buckley <colm@tuatha.org>
    Crag Wang <crag0715@gmail.com>
    Craig Loomis <cloomis@astro.princeton.edu>
@ -165,12 +156,10 @@ CONTRIBUTORS:
    Damiano Albani <damiano.albani@gmail.com>
    Damian Szuberski <szuberskidamian@gmail.com>
    Damian Wojsław <damian@wojslaw.pl>
-    Daniel Berlin <dberlin@dberlin.org>
    Daniel Hiepler <d-git@coderdu.de>
    Daniel Hoffman <dj.hoffman@delphix.com>
    Daniel Kobras <d.kobras@science-computing.de>
    Daniel Kolesa <daniel@octaforge.org>
-    Daniel Perry <dtperry@amazon.com>
    Daniel Reichelt <hacking@nachtgeist.net>
    Daniel Stevenson <bot@dstev.net>
    Daniel Verite <daniel@verite.pro>
@ -187,11 +176,8 @@ CONTRIBUTORS:
    David Quigley <david.quigley@intel.com>
    Debabrata Banerjee <dbanerje@akamai.com>
    D. Ebdrup <debdrup@freebsd.org>
-    Dennis R. Friedrichsen <dennis.r.friedrichsen@gmail.com>
    Denys Rtveliashvili <denys@rtveliashvili.name>
    Derek Dai <daiderek@gmail.com>
-    Derek Schrock <dereks@lifeofadishwasher.com>
-    Dex Wood <slash2314@gmail.com>
    DHE <git@dehacked.net>
    Didier Roche <didrocks@ubuntu.com>
    Dimitri John Ledkov <xnox@ubuntu.com>
@ -249,12 +235,9 @@ CONTRIBUTORS:
    Gionatan Danti <g.danti@assyoma.it>
    Giuseppe Di Natale <guss80@gmail.com>
    Glenn Washburn <development@efficientek.com>
-    glibg10b <glibg10b@users.noreply.github.com>
-    gofaster <felix.gofaster@gmail.com>
    Gordan Bobic <gordan@redsleeve.org>
    Gordon Bergling <gbergling@googlemail.com>
    Gordon Ross <gwr@nexenta.com>
-    Gordon Tetlow <gordon@freebsd.org>
    Graham Christensen <graham@grahamc.com>
    Graham Perrin <grahamperrin@gmail.com>
    Gregor Kopka <gregor@kopka.net>
@ -282,7 +265,6 @@ CONTRIBUTORS:
    Igor Kozhukhov <ikozhukhov@gmail.com>
    Igor Lvovsky <ilvovsky@gmail.com>
    ilbsmart <wgqimut@gmail.com>
-    Ilkka Sovanto <github@ilkka.kapsi.fi>
    illiliti <illiliti@protonmail.com>
    ilovezfs <ilovezfs@icloud.com>
    InsanePrawn <Insane.Prawny@gmail.com>
@ -298,11 +280,9 @@ CONTRIBUTORS:
    Jan Engelhardt <jengelh@inai.de>
    Jan Kryl <jan.kryl@nexenta.com>
    Jan Sanislo <oystr@cs.washington.edu>
-    Jaron Kent-Dobias <jaron@kent-dobias.com>
    Jason Cohen <jwittlincohen@gmail.com>
    Jason Harmening <jason.harmening@gmail.com>
    Jason King <jason.brian.king@gmail.com>
-    Jason Lee <jasonlee@lanl.gov>
    Jason Zaman <jasonzaman@gmail.com>
    Javen Wu <wu.javen@gmail.com>
    Jean-Baptiste Lallement <jean-baptiste@ubuntu.com>
@ -333,7 +313,6 @@ CONTRIBUTORS:
    Jonathon Fernyhough <jonathon@m2x.dev>
    Jorgen Lundman <lundman@lundman.net>
    Josef 'Jeff' Sipek <josef.sipek@nexenta.com>
-    Jose Luis Duran <jlduran@gmail.com>
    Josh Soref <jsoref@users.noreply.github.com>
    Joshua M. Clulow <josh@sysmgr.org>
    José Luis Salvador Rufo <salvador.joseluis@gmail.com>
@ -357,10 +336,8 @@ CONTRIBUTORS:
    Kash Pande <kash@tripleback.net>
    Kay Pedersen <christianpe96@gmail.com>
    Keith M Wesolowski <wesolows@foobazco.org>
-    Kent Ross <k@mad.cash>
    KernelOfTruth <kerneloftruth@gmail.com>
    Kevin Bowling <kevin.bowling@kev009.com>
-    Kevin Greene <kevin.greene@delphix.com>
    Kevin Jin <lostking2008@hotmail.com>
    Kevin P. Fleming <kevin@km6g.us>
    Kevin Tanguy <kevin.tanguy@ovh.net>
@ -412,10 +389,8 @@ CONTRIBUTORS:
    Mark Shellenbaum <Mark.Shellenbaum@Oracle.COM>
    marku89 <mar42@kola.li>
    Mark Wright <markwright@internode.on.net>
-    Mart Frauenlob <allkind@fastest.cc>
    Martin Matuska <mm@FreeBSD.org>
    Martin Rüegg <martin.rueegg@metaworx.ch>
-    Martin Wagner <martin.wagner.dev@gmail.com>
    Massimo Maggi <me@massimo-maggi.eu>
    Mateusz Guzik <mjguzik@gmail.com>
    Mateusz Piotrowski <0mp@FreeBSD.org>
@ -430,7 +405,6 @@ CONTRIBUTORS:
    Matus Kral <matuskral@me.com>
    Mauricio Faria de Oliveira <mfo@canonical.com>
    Max Grossman <max.grossman@delphix.com>
-    Maxim Filimonov <che@bein.link>
    Maximilian Mehnert <maximilian.mehnert@gmx.de>
    Max Zettlmeißl <max@zettlmeissl.de>
    Md Islam <mdnahian@outlook.com>
@ -443,7 +417,6 @@ CONTRIBUTORS:
    Michael Niewöhner <foss@mniewoehner.de>
    Michael Zhivich <mzhivich@akamai.com>
    Michal Vasilek <michal@vasilek.cz>
-    MigeljanImeri <ImeriMigel@gmail.com>
    Mike Gerdts <mike.gerdts@joyent.com>
    Mike Harsch <mike@harschsystems.com>
    Mike Leddy <mike.leddy@gmail.com>
@ -475,7 +448,6 @@ CONTRIBUTORS:
    Olaf Faaland <faaland1@llnl.gov>
    Oleg Drokin <green@linuxhacker.ru>
    Oleg Stepura <oleg@stepura.com>
-    Olivier Certner <olce.freebsd@certner.fr>
    Olivier Mazouffre <olivier.mazouffre@ims-bordeaux.fr>
    omni <omni+vagant@hack.org>
    Orivej Desh <orivej@gmx.fr>
@ -494,7 +466,6 @@ CONTRIBUTORS:
    Peng <peng.hse@xtaotech.com>
    Peter Ashford <ashford@accs.com>
    Peter Dave Hello <hsu@peterdavehello.org>
-    Peter Doherty <peterd@acranox.org>
    Peter Levine <plevine457@gmail.com>
    Peter Wirdemo <peter.wirdemo@gmail.com>
    Petros Koutoupis <petros@petroskoutoupis.com>
@ -508,8 +479,6 @@ CONTRIBUTORS:
    Prasad Joshi <prasadjoshi124@gmail.com>
    privb0x23 <privb0x23@users.noreply.github.com>
    P.SCH <p88@yahoo.com>
-    Qiuhao Chen <chenqiuhao1997@gmail.com>
-    Quartz <yyhran@163.com>
    Quentin Zdanis <zdanisq@gmail.com>
    Rafael Kitover <rkitover@gmail.com>
    RageLtMan <sempervictus@users.noreply.github.com>
@ -522,15 +491,11 @@ CONTRIBUTORS:
    Riccardo Schirone <rschirone91@gmail.com>
    Richard Allen <belperite@gmail.com>
    Richard Elling <Richard.Elling@RichardElling.com>
-    Richard Kojedzinszky <richard@kojedz.in>
    Richard Laager <rlaager@wiktel.com>
    Richard Lowe <richlowe@richlowe.net>
    Richard Sharpe <rsharpe@samba.org>
    Richard Yao <ryao@gentoo.org>
    Rich Ercolani <rincebrain@gmail.com>
-    Rick Macklem <rmacklem@uoguelph.ca>
-    rilysh <nightquick@proton.me>
-    Robert Evans <evansr@google.com>
    Robert Novak <sailnfool@gmail.com>
    Roberto Ricci <ricci@disroot.org>
    Rob Norris <robn@despairlabs.com>
@ -540,14 +505,11 @@ CONTRIBUTORS:
    Roman Strashkin <roman.strashkin@nexenta.com>
    Ross Williams <ross@ross-williams.net>
    Ruben Kerkhof <ruben@rubenkerkhof.com>
-    Ryan <errornointernet@envs.net>
    Ryan Hirasaki <ryanhirasaki@gmail.com>
    Ryan Lahfa <masterancpp@gmail.com>
    Ryan Libby <rlibby@FreeBSD.org>
    Ryan Moeller <freqlabs@FreeBSD.org>
-    Sam Atkinson <samatk@amazon.com>
    Sam Hathaway <github.com@munkynet.org>
-    Sam James <sam@gentoo.org>
    Sam Lunt <samuel.j.lunt@gmail.com>
    Samuel VERSCHELDE <stormi-github@ylix.fr>
    Samuel Wycliffe <samuelwycliffe@gmail.com>
@ -565,12 +527,9 @@ CONTRIBUTORS:
    Sen Haerens <sen@senhaerens.be>
    Serapheim Dimitropoulos <serapheim@delphix.com>
    Seth Forshee <seth.forshee@canonical.com>
-    Seth Troisi <sethtroisi@google.com>
    Shaan Nobee <sniper111@gmail.com>
    Shampavman <sham.pavman@nexenta.com>
    Shaun Tancheff <shaun@aeonazure.com>
-    Shawn Bayern <sbayern@law.fsu.edu>
-    Shengqi Chen <harry-chen@outlook.com>
    Shen Yan <shenyanxxxy@qq.com>
    Simon Guest <simon.guest@tesujimath.org>
    Simon Klinkert <simon.klinkert@gmail.com>
@ -578,7 +537,6 @@ CONTRIBUTORS:
    Spencer Kinny <spencerkinny1995@gmail.com>
    Srikanth N S <srikanth.nagasubbaraoseetharaman@hpe.com>
    Stanislav Seletskiy <s.seletskiy@gmail.com>
-    Stefan Lendl <s.lendl@proxmox.com>
    Steffen Müthing <steffen.muething@iwr.uni-heidelberg.de>
    Stephen Blinick <stephen.blinick@delphix.com>
    sterlingjensen <sterlingjensen@users.noreply.github.com>
@ -599,7 +557,6 @@ CONTRIBUTORS:
    Teodor Spæren <teodor_spaeren@riseup.net>
    TerraTech <TerraTech@users.noreply.github.com>
    Thijs Cramer <thijs.cramer@gmail.com>
-    Thomas Bertschinger <bertschinger@lanl.gov>
    Thomas Geppert <geppi@digitx.de>
    Thomas Lamprecht <guggentom@hotmail.de>
    Till Maas <opensource@till.name>
@ -612,7 +569,6 @@ CONTRIBUTORS:
    Tim Schumacher <timschumi@gmx.de>
    Tino Reichardt <milky-zfs@mcmilk.de>
    Tobin Harding <me@tobin.cc>
-    Todd Seidelmann <seidelma@users.noreply.github.com>
    Tom Caputi <tcaputi@datto.com>
    Tom Matthews <tom@axiom-partners.com>
    Tomohiro Kusumi <kusumi.tomohiro@gmail.com>
@ -630,7 +586,6 @@ CONTRIBUTORS:
    Turbo Fredriksson <turbo@bayour.com>
    Tyler J. Stachecki <stachecki.tyler@gmail.com>
    Umer Saleem <usaleem@ixsystems.com>
-    Vaibhav Bhanawat <vaibhav.bhanawat@delphix.com>
    Valmiky Arquissandas <kayvlim@gmail.com>
    Val Packett <val@packett.cool>
    Vince van Oosten <techhazard@codeforyouand.me>
@ -659,13 +614,10 @@ CONTRIBUTORS:
    yuina822 <ayuichi@club.kyutech.ac.jp>
    YunQiang Su <syq@debian.org>
    Yuri Pankov <yuri.pankov@gmail.com>
-    Yuxin Wang <yuxinwang9999@gmail.com>
    Yuxuan Shui <yshuiv7@gmail.com>
    Zachary Bedell <zac@thebedells.org>
    Zach Dykstra <dykstra.zachary@gmail.com>
    zgock <zgock@nuc.base.zgock-lab.net>
-    Zhao Yongming <zym@apache.org>
-    Zhenlei Huang <zlei@FreeBSD.org>
    Zhu Chuang <chuang@melty.land>
    Érico Nogueira <erico.erc@gmail.com>
    Đoàn Trần Công Danh <congdanhqx@gmail.com>
--- a/2
+++ b/2
@ -6,5 +6,5 @@ Release:       1
 Release-Tags:  relext
 License:       CDDL
 Author:        OpenZFS
-Linux-Maximum: 6.10
+Linux-Maximum: 6.5
 Linux-Minimum: 3.10
--- a/README.md
+++ b/README.md
@ -32,4 +32,4 @@ For more details see the NOTICE, LICENSE and COPYRIGHT files; `UCRL-CODE-235197`

 # Supported Kernels
  * The `META` file contains the officially recognized supported Linux kernel versions.
-  * Supported FreeBSD versions are any supported branches and releases starting from 13.0-RELEASE.
+  * Supported FreeBSD versions are any supported branches and releases starting from 12.2-RELEASE.
--- a/cmd/Makefile.am
+++ b/cmd/Makefile.am
@ -24,7 +24,7 @@ zfs_ids_to_path_LDADD = \
 	libzfs.la


-zhack_CPPFLAGS = $(AM_CPPFLAGS) $(LIBZPOOL_CPPFLAGS)
+zhack_CPPFLAGS = $(AM_CPPFLAGS) $(FORCEDEBUG_CPPFLAGS)

 sbin_PROGRAMS   += zhack
 CPPCHECKTARGETS += zhack
@ -39,7 +39,9 @@ zhack_LDADD = \


 ztest_CFLAGS    = $(AM_CFLAGS) $(KERNEL_CFLAGS)
-ztest_CPPFLAGS  = $(AM_CPPFLAGS) $(LIBZPOOL_CPPFLAGS)
+# Get rid of compiler warning for unchecked truncating snprintfs on gcc 7.1.1
+ztest_CFLAGS   += $(NO_FORMAT_TRUNCATION)
+ztest_CPPFLAGS  = $(AM_CPPFLAGS) $(FORCEDEBUG_CPPFLAGS)

 sbin_PROGRAMS   += ztest
 CPPCHECKTARGETS += ztest
--- a/cmd/arc_summary
+++ b/cmd/arc_summary
@ -260,34 +260,33 @@ def draw_graph(kstats_dict):
    arc_stats = isolate_section('arcstats', kstats_dict)

    GRAPH_INDENT = ' '*4
-    GRAPH_WIDTH = 70
-    arc_max = int(arc_stats['c_max'])
+    GRAPH_WIDTH = 60
    arc_size = f_bytes(arc_stats['size'])
-    arc_perc = f_perc(arc_stats['size'], arc_max)
-    data_size = f_bytes(arc_stats['data_size'])
-    meta_size = f_bytes(arc_stats['metadata_size'])
+    arc_perc = f_perc(arc_stats['size'], arc_stats['c_max'])
+    mfu_size = f_bytes(arc_stats['mfu_size'])
+    mru_size = f_bytes(arc_stats['mru_size'])
+    meta_size = f_bytes(arc_stats['arc_meta_used'])
+    dnode_limit = f_bytes(arc_stats['arc_dnode_limit'])
    dnode_size = f_bytes(arc_stats['dnode_size'])

-    info_form = ('ARC: {0} ({1}) Data: {2} Meta: {3} Dnode: {4}')
-    info_line = info_form.format(arc_size, arc_perc, data_size, meta_size,
-                                 dnode_size)
+    info_form = ('ARC: {0} ({1})  MFU: {2}  MRU: {3}  META: {4} '
+                 'DNODE {5} ({6})')
+    info_line = info_form.format(arc_size, arc_perc, mfu_size, mru_size,
+                                 meta_size, dnode_size, dnode_limit)
    info_spc = ' '*int((GRAPH_WIDTH-len(info_line))/2)
    info_line = GRAPH_INDENT+info_spc+info_line

    graph_line = GRAPH_INDENT+'+'+('-'*(GRAPH_WIDTH-2))+'+'

-    arc_perc = float(int(arc_stats['size'])/arc_max)
-    data_perc = float(int(arc_stats['data_size'])/arc_max)
-    meta_perc = float(int(arc_stats['metadata_size'])/arc_max)
-    dnode_perc = float(int(arc_stats['dnode_size'])/arc_max)
+    mfu_perc = float(int(arc_stats['mfu_size'])/int(arc_stats['c_max']))
+    mru_perc = float(int(arc_stats['mru_size'])/int(arc_stats['c_max']))
+    arc_perc = float(int(arc_stats['size'])/int(arc_stats['c_max']))
    total_ticks = float(arc_perc)*GRAPH_WIDTH
-    data_ticks = data_perc*GRAPH_WIDTH
-    meta_ticks = meta_perc*GRAPH_WIDTH
-    dnode_ticks = dnode_perc*GRAPH_WIDTH
-    other_ticks = total_ticks-(data_ticks+meta_ticks+dnode_ticks)
+    mfu_ticks = mfu_perc*GRAPH_WIDTH
+    mru_ticks = mru_perc*GRAPH_WIDTH
+    other_ticks = total_ticks-(mfu_ticks+mru_ticks)

-    core_form = 'D'*int(data_ticks)+'M'*int(meta_ticks)+'N'*int(dnode_ticks)+\
-        'O'*int(other_ticks)
+    core_form = 'F'*int(mfu_ticks)+'R'*int(mru_ticks)+'O'*int(other_ticks)
    core_spc = ' '*(GRAPH_WIDTH-(2+len(core_form)))
    core_line = GRAPH_INDENT+'|'+core_form+core_spc+'|'

@ -537,87 +536,56 @@ def section_arc(kstats_dict):

    arc_stats = isolate_section('arcstats', kstats_dict)

-    memory_all = arc_stats['memory_all_bytes']
-    memory_free = arc_stats['memory_free_bytes']
-    memory_avail = arc_stats['memory_available_bytes']
+    throttle = arc_stats['memory_throttle_count']
+
+    if throttle == '0':
+        health = 'HEALTHY'
+    else:
+        health = 'THROTTLED'
+
+    prt_1('ARC status:', health)
+    prt_i1('Memory throttle count:', throttle)
+    print()
+
    arc_size = arc_stats['size']
    arc_target_size = arc_stats['c']
    arc_max = arc_stats['c_max']
    arc_min = arc_stats['c_min']
-    dnode_limit = arc_stats['arc_dnode_limit']
-
-    print('ARC status:')
-    prt_i1('Total memory size:', f_bytes(memory_all))
-    prt_i2('Min target size:', f_perc(arc_min, memory_all), f_bytes(arc_min))
-    prt_i2('Max target size:', f_perc(arc_max, memory_all), f_bytes(arc_max))
-    prt_i2('Target size (adaptive):',
-           f_perc(arc_size, arc_max), f_bytes(arc_target_size))
-    prt_i2('Current size:', f_perc(arc_size, arc_max), f_bytes(arc_size))
-    prt_i1('Free memory size:', f_bytes(memory_free))
-    prt_i1('Available memory size:', f_bytes(memory_avail))
-    print()
-
-    compressed_size = arc_stats['compressed_size']
-    overhead_size = arc_stats['overhead_size']
-    bonus_size = arc_stats['bonus_size']
-    dnode_size = arc_stats['dnode_size']
-    dbuf_size = arc_stats['dbuf_size']
-    hdr_size = arc_stats['hdr_size']
-    l2_hdr_size = arc_stats['l2_hdr_size']
-    abd_chunk_waste_size = arc_stats['abd_chunk_waste_size']
-
-    prt_1('ARC structal breakdown (current size):', f_bytes(arc_size))
-    prt_i2('Compressed size:',
-           f_perc(compressed_size, arc_size), f_bytes(compressed_size))
-    prt_i2('Overhead size:',
-           f_perc(overhead_size, arc_size), f_bytes(overhead_size))
-    prt_i2('Bonus size:',
-           f_perc(bonus_size, arc_size), f_bytes(bonus_size))
-    prt_i2('Dnode size:',
-           f_perc(dnode_size, arc_size), f_bytes(dnode_size))
-    prt_i2('Dbuf size:',
-           f_perc(dbuf_size, arc_size), f_bytes(dbuf_size))
-    prt_i2('Header size:',
-           f_perc(hdr_size, arc_size), f_bytes(hdr_size))
-    prt_i2('L2 header size:',
-           f_perc(l2_hdr_size, arc_size), f_bytes(l2_hdr_size))
-    prt_i2('ABD chunk waste size:',
-           f_perc(abd_chunk_waste_size, arc_size), f_bytes(abd_chunk_waste_size))
-    print()
-
    meta = arc_stats['meta']
    pd = arc_stats['pd']
    pm = arc_stats['pm']
-    data_size = arc_stats['data_size']
-    metadata_size = arc_stats['metadata_size']
    anon_data = arc_stats['anon_data']
    anon_metadata = arc_stats['anon_metadata']
    mfu_data = arc_stats['mfu_data']
    mfu_metadata = arc_stats['mfu_metadata']
-    mfu_edata = arc_stats['mfu_evictable_data']
-    mfu_emetadata = arc_stats['mfu_evictable_metadata']
    mru_data = arc_stats['mru_data']
    mru_metadata = arc_stats['mru_metadata']
-    mru_edata = arc_stats['mru_evictable_data']
-    mru_emetadata = arc_stats['mru_evictable_metadata']
    mfug_data = arc_stats['mfu_ghost_data']
    mfug_metadata = arc_stats['mfu_ghost_metadata']
    mrug_data = arc_stats['mru_ghost_data']
    mrug_metadata = arc_stats['mru_ghost_metadata']
    unc_data = arc_stats['uncached_data']
    unc_metadata = arc_stats['uncached_metadata']
+    bonus_size = arc_stats['bonus_size']
+    dnode_limit = arc_stats['arc_dnode_limit']
+    dnode_size = arc_stats['dnode_size']
+    dbuf_size = arc_stats['dbuf_size']
+    hdr_size = arc_stats['hdr_size']
+    l2_hdr_size = arc_stats['l2_hdr_size']
+    abd_chunk_waste_size = arc_stats['abd_chunk_waste_size']
+    target_size_ratio = '{0}:1'.format(int(arc_max) // int(arc_min))
+
+    prt_2('ARC size (current):',
+          f_perc(arc_size, arc_max), f_bytes(arc_size))
+    prt_i2('Target size (adaptive):',
+           f_perc(arc_target_size, arc_max), f_bytes(arc_target_size))
+    prt_i2('Min size (hard limit):',
+           f_perc(arc_min, arc_max), f_bytes(arc_min))
+    prt_i2('Max size (high water):',
+           target_size_ratio, f_bytes(arc_max))
    caches_size = int(anon_data)+int(anon_metadata)+\
        int(mfu_data)+int(mfu_metadata)+int(mru_data)+int(mru_metadata)+\
        int(unc_data)+int(unc_metadata)
-
-    prt_1('ARC types breakdown (compressed + overhead):', f_bytes(caches_size))
-    prt_i2('Data size:',
-           f_perc(data_size, caches_size), f_bytes(data_size))
-    prt_i2('Metadata size:',
-           f_perc(metadata_size, caches_size), f_bytes(metadata_size))
-    print()
-
-    prt_1('ARC states breakdown (compressed + overhead):', f_bytes(caches_size))
    prt_i2('Anonymous data size:',
           f_perc(anon_data, caches_size), f_bytes(anon_data))
    prt_i2('Anonymous metadata size:',
@ -628,37 +596,43 @@ def section_arc(kstats_dict):
        f_bytes(v / 65536 * caches_size / 65536))
    prt_i2('MFU data size:',
           f_perc(mfu_data, caches_size), f_bytes(mfu_data))
-    prt_i2('MFU evictable data size:',
-           f_perc(mfu_edata, caches_size), f_bytes(mfu_edata))
    prt_i1('MFU ghost data size:', f_bytes(mfug_data))
    v = (s-int(pm))*int(meta)/s
    prt_i2('MFU metadata target:', f_perc(v, s),
        f_bytes(v / 65536 * caches_size / 65536))
    prt_i2('MFU metadata size:',
           f_perc(mfu_metadata, caches_size), f_bytes(mfu_metadata))
-    prt_i2('MFU evictable metadata size:',
-           f_perc(mfu_emetadata, caches_size), f_bytes(mfu_emetadata))
    prt_i1('MFU ghost metadata size:', f_bytes(mfug_metadata))
    v = int(pd)*(s-int(meta))/s
    prt_i2('MRU data target:', f_perc(v, s),
        f_bytes(v / 65536 * caches_size / 65536))
    prt_i2('MRU data size:',
           f_perc(mru_data, caches_size), f_bytes(mru_data))
-    prt_i2('MRU evictable data size:',
-           f_perc(mru_edata, caches_size), f_bytes(mru_edata))
    prt_i1('MRU ghost data size:', f_bytes(mrug_data))
    v = int(pm)*int(meta)/s
    prt_i2('MRU metadata target:', f_perc(v, s),
        f_bytes(v / 65536 * caches_size / 65536))
    prt_i2('MRU metadata size:',
           f_perc(mru_metadata, caches_size), f_bytes(mru_metadata))
-    prt_i2('MRU evictable metadata size:',
-           f_perc(mru_emetadata, caches_size), f_bytes(mru_emetadata))
    prt_i1('MRU ghost metadata size:', f_bytes(mrug_metadata))
    prt_i2('Uncached data size:',
           f_perc(unc_data, caches_size), f_bytes(unc_data))
    prt_i2('Uncached metadata size:',
           f_perc(unc_metadata, caches_size), f_bytes(unc_metadata))
+    prt_i2('Bonus size:',
+           f_perc(bonus_size, arc_size), f_bytes(bonus_size))
+    prt_i2('Dnode cache target:',
+           f_perc(dnode_limit, arc_max), f_bytes(dnode_limit))
+    prt_i2('Dnode cache size:',
+           f_perc(dnode_size, dnode_limit), f_bytes(dnode_size))
+    prt_i2('Dbuf size:',
+           f_perc(dbuf_size, arc_size), f_bytes(dbuf_size))
+    prt_i2('Header size:',
+           f_perc(hdr_size, arc_size), f_bytes(hdr_size))
+    prt_i2('L2 header size:',
+           f_perc(l2_hdr_size, arc_size), f_bytes(l2_hdr_size))
+    prt_i2('ABD chunk waste size:',
+           f_perc(abd_chunk_waste_size, arc_size), f_bytes(abd_chunk_waste_size))
    print()

    print('ARC hash breakdown:')
@ -673,9 +647,6 @@ def section_arc(kstats_dict):
    print()

    print('ARC misc:')
-    prt_i1('Memory throttles:', arc_stats['memory_throttle_count'])
-    prt_i1('Memory direct reclaims:', arc_stats['memory_direct_count'])
-    prt_i1('Memory indirect reclaims:', arc_stats['memory_indirect_count'])
    prt_i1('Deleted:', f_hits(arc_stats['deleted']))
    prt_i1('Mutex misses:', f_hits(arc_stats['mutex_miss']))
    prt_i1('Eviction skips:', f_hits(arc_stats['evict_skip']))
@ -740,7 +711,7 @@ def section_archits(kstats_dict):
    pd_total = int(arc_stats['prefetch_data_hits']) +\
        int(arc_stats['prefetch_data_iohits']) +\
        int(arc_stats['prefetch_data_misses'])
-    prt_2('ARC prefetch data accesses:', f_perc(pd_total, all_accesses),
+    prt_2('ARC prefetch metadata accesses:', f_perc(pd_total, all_accesses),
          f_hits(pd_total))
    pd_todo = (('Prefetch data hits:', arc_stats['prefetch_data_hits']),
               ('Prefetch data I/O hits:', arc_stats['prefetch_data_iohits']),
@ -822,27 +793,18 @@ def section_dmu(kstats_dict):

    zfetch_stats = isolate_section('zfetchstats', kstats_dict)

-    zfetch_access_total = int(zfetch_stats['hits']) +\
-        int(zfetch_stats['future']) + int(zfetch_stats['stride']) +\
-        int(zfetch_stats['past']) + int(zfetch_stats['misses'])
+    zfetch_access_total = int(zfetch_stats['hits'])+int(zfetch_stats['misses'])

    prt_1('DMU predictive prefetcher calls:', f_hits(zfetch_access_total))
    prt_i2('Stream hits:',
           f_perc(zfetch_stats['hits'], zfetch_access_total),
           f_hits(zfetch_stats['hits']))
-    future = int(zfetch_stats['future']) + int(zfetch_stats['stride'])
-    prt_i2('Hits ahead of stream:', f_perc(future, zfetch_access_total),
-           f_hits(future))
-    prt_i2('Hits behind stream:',
-           f_perc(zfetch_stats['past'], zfetch_access_total),
-           f_hits(zfetch_stats['past']))
    prt_i2('Stream misses:',
           f_perc(zfetch_stats['misses'], zfetch_access_total),
           f_hits(zfetch_stats['misses']))
    prt_i2('Streams limit reached:',
           f_perc(zfetch_stats['max_streams'], zfetch_stats['misses']),
           f_hits(zfetch_stats['max_streams']))
-    prt_i1('Stream strides:', f_hits(zfetch_stats['stride']))
    prt_i1('Prefetches issued', f_hits(zfetch_stats['io_issued']))
    print()

--- a/cmd/arcstat.in
+++ b/cmd/arcstat.in
@ -157,16 +157,6 @@ cols = {
    "free":       [5, 1024, "ARC free memory"],
    "avail":      [5, 1024, "ARC available memory"],
    "waste":      [5, 1024, "Wasted memory due to round up to pagesize"],
-    "ztotal":     [6, 1000, "zfetch total prefetcher calls per second"],
-    "zhits":      [5, 1000, "zfetch stream hits per second"],
-    "zahead":     [6, 1000, "zfetch hits ahead of streams per second"],
-    "zpast":      [5, 1000, "zfetch hits behind streams per second"],
-    "zmisses":    [7, 1000, "zfetch stream misses per second"],
-    "zmax":       [4, 1000, "zfetch limit reached per second"],
-    "zfuture":    [7, 1000, "zfetch stream future per second"],
-    "zstride":    [7, 1000, "zfetch stream strides per second"],
-    "zissued":    [7, 1000, "zfetch prefetches issued per second"],
-    "zactive":    [7, 1000, "zfetch prefetches active per second"],
 }

 v = {}
@ -174,8 +164,6 @@ hdr = ["time", "read", "ddread", "ddh%", "dmread", "dmh%", "pread", "ph%",
       "size", "c", "avail"]
 xhdr = ["time", "mfu", "mru", "mfug", "mrug", "unc", "eskip", "mtxmis",
        "dread", "pread", "read"]
-zhdr = ["time", "ztotal", "zhits", "zahead", "zpast", "zmisses", "zmax",
-        "zfuture", "zstride", "zissued", "zactive"]
 sint = 1               # Default interval is 1 second
 count = 1              # Default count is 1
 hdr_intr = 20          # Print header every 20 lines of output
@ -200,8 +188,6 @@ if sys.platform.startswith('freebsd'):

        k = [ctl for ctl in sysctl.filter('kstat.zfs.misc.arcstats')
             if ctl.type != sysctl.CTLTYPE_NODE]
-        k += [ctl for ctl in sysctl.filter('kstat.zfs.misc.zfetchstats')
-             if ctl.type != sysctl.CTLTYPE_NODE]

        if not k:
            sys.exit(1)
@ -213,28 +199,19 @@ if sys.platform.startswith('freebsd'):
                continue

            name, value = s.name, s.value
-
-            if "arcstats" in name:
            # Trims 'kstat.zfs.misc.arcstats' from the name
            kstat[name[24:]] = int(value)
-            else:
-                kstat["zfetch_" + name[27:]] = int(value)

 elif sys.platform.startswith('linux'):
    def kstat_update():
        global kstat

-        k1 = [line.strip() for line in open('/proc/spl/kstat/zfs/arcstats')]
+        k = [line.strip() for line in open('/proc/spl/kstat/zfs/arcstats')]

-        k2 = ["zfetch_" + line.strip() for line in
-             open('/proc/spl/kstat/zfs/zfetchstats')]
-
-        if k1 is None or k2 is None:
+        if not k:
            sys.exit(1)

-        del k1[0:2]
-        del k2[0:2]
-        k = k1 + k2
+        del k[0:2]
        kstat = {}

        for s in k:
@ -262,7 +239,6 @@ def usage():
    sys.stderr.write("\t -v : List all possible field headers and definitions"
                     "\n")
    sys.stderr.write("\t -x : Print extended stats\n")
-    sys.stderr.write("\t -z : Print zfetch stats\n")
    sys.stderr.write("\t -f : Specify specific fields to print (see -v)\n")
    sys.stderr.write("\t -o : Redirect output to the specified file\n")
    sys.stderr.write("\t -s : Override default field separator with custom "
@ -381,7 +357,6 @@ def init():
    global count
    global hdr
    global xhdr
-    global zhdr
    global opfile
    global sep
    global out
@ -393,17 +368,15 @@ def init():
    xflag = False
    hflag = False
    vflag = False
-    zflag = False
    i = 1

    try:
        opts, args = getopt.getopt(
            sys.argv[1:],
-            "axzo:hvs:f:p",
+            "axo:hvs:f:p",
            [
                "all",
                "extended",
-                "zfetch",
                "outfile",
                "help",
                "verbose",
@ -437,15 +410,13 @@ def init():
            i += 1
        if opt in ('-p', '--parsable'):
            pretty_print = False
-        if opt in ('-z', '--zfetch'):
-            zflag = True
        i += 1

    argv = sys.argv[i:]
    sint = int(argv[0]) if argv else sint
    count = int(argv[1]) if len(argv) > 1 else (0 if len(argv) > 0 else 1)

-    if hflag or (xflag and zflag) or ((zflag or xflag) and desired_cols):
+    if hflag or (xflag and desired_cols):
        usage()

    if vflag:
@ -454,9 +425,6 @@ def init():
    if xflag:
        hdr = xhdr

-    if zflag:
-        hdr = zhdr
-
    update_hdr_intr()

    # check if L2ARC exists
@ -601,17 +569,6 @@ def calculate():
    v["el2mru"] = d["evict_l2_eligible_mru"] // sint
    v["el2inel"] = d["evict_l2_ineligible"] // sint
    v["mtxmis"] = d["mutex_miss"] // sint
-    v["ztotal"] = (d["zfetch_hits"] + d["zfetch_future"] + d["zfetch_stride"] +
-                   d["zfetch_past"] + d["zfetch_misses"]) // sint
-    v["zhits"] = d["zfetch_hits"] // sint
-    v["zahead"] = (d["zfetch_future"] + d["zfetch_stride"]) // sint
-    v["zpast"] = d["zfetch_past"] // sint
-    v["zmisses"] = d["zfetch_misses"] // sint
-    v["zmax"] = d["zfetch_max_streams"] // sint
-    v["zfuture"] = d["zfetch_future"] // sint
-    v["zstride"] = d["zfetch_stride"] // sint
-    v["zissued"] = d["zfetch_io_issued"] // sint
-    v["zactive"] = d["zfetch_io_active"] // sint

    if l2exist:
        v["l2hits"] = d["l2_hits"] // sint
--- a/cmd/dbufstat.in
+++ b/cmd/dbufstat.in
@ -37,7 +37,7 @@ import re

 bhdr = ["pool", "objset", "object", "level", "blkid", "offset", "dbsize"]
 bxhdr = ["pool", "objset", "object", "level", "blkid", "offset", "dbsize",
-         "usize", "meta", "state", "dbholds", "dbc", "list", "atype", "flags",
+         "meta", "state", "dbholds", "dbc", "list", "atype", "flags",
         "count", "asize", "access", "mru", "gmru", "mfu", "gmfu", "l2",
         "l2_dattr", "l2_asize", "l2_comp", "aholds", "dtype", "btype",
         "data_bs", "meta_bs", "bsize", "lvls", "dholds", "blocks", "dsize"]
@ -47,17 +47,17 @@ dhdr = ["pool", "objset", "object", "dtype", "cached"]
 dxhdr = ["pool", "objset", "object", "dtype", "btype", "data_bs", "meta_bs",
         "bsize", "lvls", "dholds", "blocks", "dsize", "cached", "direct",
         "indirect", "bonus", "spill"]
-dincompat = ["level", "blkid", "offset", "dbsize", "usize", "meta", "state",
-             "dbholds", "dbc", "list", "atype", "flags", "count", "asize",
-             "access", "mru", "gmru", "mfu", "gmfu", "l2", "l2_dattr",
-             "l2_asize", "l2_comp", "aholds"]
+dincompat = ["level", "blkid", "offset", "dbsize", "meta", "state", "dbholds",
+             "dbc", "list", "atype", "flags", "count", "asize", "access",
+             "mru", "gmru", "mfu", "gmfu", "l2", "l2_dattr", "l2_asize",
+             "l2_comp", "aholds"]

 thdr = ["pool", "objset", "dtype", "cached"]
 txhdr = ["pool", "objset", "dtype", "cached", "direct", "indirect",
         "bonus", "spill"]
-tincompat = ["object", "level", "blkid", "offset", "dbsize", "usize", "meta",
-             "state", "dbc", "dbholds", "list", "atype", "flags", "count",
-             "asize", "access", "mru", "gmru", "mfu", "gmfu", "l2", "l2_dattr",
+tincompat = ["object", "level", "blkid", "offset", "dbsize", "meta", "state",
+             "dbc", "dbholds", "list", "atype", "flags", "count", "asize",
+             "access", "mru", "gmru", "mfu", "gmfu", "l2", "l2_dattr",
             "l2_asize", "l2_comp", "aholds", "btype", "data_bs", "meta_bs",
             "bsize", "lvls", "dholds", "blocks", "dsize"]

@ -70,7 +70,6 @@ cols = {
    "blkid":      [8,    -1, "block number of buffer"],
    "offset":     [12, 1024, "offset in object of buffer"],
    "dbsize":     [7,  1024, "size of buffer"],
-    "usize":      [7,  1024, "size of attached user data"],
    "meta":       [4,    -1, "is this buffer metadata?"],
    "state":      [5,    -1, "state of buffer (read, cached, etc)"],
    "dbholds":    [7,  1000, "number of holds on buffer"],
@ -400,7 +399,6 @@ def update_dict(d, k, line, labels):
    key = line[labels[k]]

    dbsize = int(line[labels['dbsize']])
-    usize = int(line[labels['usize']])
    blkid = int(line[labels['blkid']])
    level = int(line[labels['level']])

@ -418,7 +416,7 @@ def update_dict(d, k, line, labels):
        d[pool][objset][key]['indirect'] = 0
        d[pool][objset][key]['spill'] = 0

-    d[pool][objset][key]['cached'] += dbsize + usize
+    d[pool][objset][key]['cached'] += dbsize

    if blkid == -1:
        d[pool][objset][key]['bonus'] += dbsize
--- a/cmd/mount_zfs.c
+++ b/cmd/mount_zfs.c
@ -269,7 +269,8 @@ main(int argc, char **argv)
 		return (MOUNT_USAGE);
 	}

-	if (sloppy || libzfs_envvar_is_set("ZFS_MOUNT_HELPER")) {
+	if (!zfsutil || sloppy ||
+	    libzfs_envvar_is_set("ZFS_MOUNT_HELPER")) {
 		zfs_adjust_mount_options(zhp, mntpoint, mntopts, mtabopt);
 	}

@ -336,7 +337,7 @@ main(int argc, char **argv)
 		    dataset, mntpoint, mntflags, zfsflags, mntopts, mtabopt);

 	if (!fake) {
-		if (!remount && !sloppy &&
+		if (zfsutil && !sloppy &&
 		    !libzfs_envvar_is_set("ZFS_MOUNT_HELPER")) {
 			error = zfs_mount_at(zhp, mntopts, mntflags, mntpoint);
 			if (error) {
--- a/cmd/raidz_test/Makefile.am
+++ b/cmd/raidz_test/Makefile.am
@ -1,5 +1,5 @@
 raidz_test_CFLAGS   = $(AM_CFLAGS)   $(KERNEL_CFLAGS)
-raidz_test_CPPFLAGS = $(AM_CPPFLAGS) $(LIBZPOOL_CPPFLAGS)
+raidz_test_CPPFLAGS = $(AM_CPPFLAGS) $(FORCEDEBUG_CPPFLAGS)

 bin_PROGRAMS    += raidz_test
 CPPCHECKTARGETS += raidz_test
--- a/cmd/raidz_test/raidz_bench.c
+++ b/cmd/raidz_test/raidz_bench.c
@ -84,10 +84,10 @@ run_gen_bench_impl(const char *impl)

 			if (rto_opts.rto_expand) {
 				rm_bench = vdev_raidz_map_alloc_expanded(
-				    &zio_bench,
+				    zio_bench.io_abd,
+				    zio_bench.io_size, zio_bench.io_offset,
 				    rto_opts.rto_ashift, ncols+1, ncols,
-				    fn+1, rto_opts.rto_expand_offset,
-				    0, B_FALSE);
+				    fn+1, rto_opts.rto_expand_offset);
 			} else {
 				rm_bench = vdev_raidz_map_alloc(&zio_bench,
 				    BENCH_ASHIFT, ncols, fn+1);
@ -172,10 +172,10 @@ run_rec_bench_impl(const char *impl)

 			if (rto_opts.rto_expand) {
 				rm_bench = vdev_raidz_map_alloc_expanded(
-				    &zio_bench,
+				    zio_bench.io_abd,
+				    zio_bench.io_size, zio_bench.io_offset,
 				    BENCH_ASHIFT, ncols+1, ncols,
-				    PARITY_PQR,
-				    rto_opts.rto_expand_offset, 0, B_FALSE);
+				    PARITY_PQR, rto_opts.rto_expand_offset);
 			} else {
 				rm_bench = vdev_raidz_map_alloc(&zio_bench,
 				    BENCH_ASHIFT, ncols, PARITY_PQR);
--- a/cmd/raidz_test/raidz_test.c
+++ b/cmd/raidz_test/raidz_test.c
@ -327,12 +327,14 @@ init_raidz_golden_map(raidz_test_opts_t *opts, const int parity)

 	if (opts->rto_expand) {
 		opts->rm_golden =
-		    vdev_raidz_map_alloc_expanded(opts->zio_golden,
+		    vdev_raidz_map_alloc_expanded(opts->zio_golden->io_abd,
+		    opts->zio_golden->io_size, opts->zio_golden->io_offset,
 		    opts->rto_ashift, total_ncols+1, total_ncols,
-		    parity, opts->rto_expand_offset, 0, B_FALSE);
-		rm_test = vdev_raidz_map_alloc_expanded(zio_test,
+		    parity, opts->rto_expand_offset);
+		rm_test = vdev_raidz_map_alloc_expanded(zio_test->io_abd,
+		    zio_test->io_size, zio_test->io_offset,
 		    opts->rto_ashift, total_ncols+1, total_ncols,
-		    parity, opts->rto_expand_offset, 0, B_FALSE);
+		    parity, opts->rto_expand_offset);
 	} else {
 		opts->rm_golden = vdev_raidz_map_alloc(opts->zio_golden,
 		    opts->rto_ashift, total_ncols, parity);
@ -359,6 +361,187 @@ init_raidz_golden_map(raidz_test_opts_t *opts, const int parity)
 	return (err);
 }

+/*
+ * If reflow is not in progress, reflow_offset should be UINT64_MAX.
+ * For each row, if the row is entirely before reflow_offset, it will
+ * come from the new location.  Otherwise this row will come from the
+ * old location.  Therefore, rows that straddle the reflow_offset will
+ * come from the old location.
+ *
+ * NOTE: Until raidz expansion is implemented this function is only
+ * needed by raidz_test.c to the multi-row raid_map_t functionality.
+ */
+raidz_map_t *
+vdev_raidz_map_alloc_expanded(abd_t *abd, uint64_t size, uint64_t offset,
+    uint64_t ashift, uint64_t physical_cols, uint64_t logical_cols,
+    uint64_t nparity, uint64_t reflow_offset)
+{
+	/* The zio's size in units of the vdev's minimum sector size. */
+	uint64_t s = size >> ashift;
+	uint64_t q, r, bc, devidx, asize = 0, tot;
+
+	/*
+	 * "Quotient": The number of data sectors for this stripe on all but
+	 * the "big column" child vdevs that also contain "remainder" data.
+	 * AKA "full rows"
+	 */
+	q = s / (logical_cols - nparity);
+
+	/*
+	 * "Remainder": The number of partial stripe data sectors in this I/O.
+	 * This will add a sector to some, but not all, child vdevs.
+	 */
+	r = s - q * (logical_cols - nparity);
+
+	/* The number of "big columns" - those which contain remainder data. */
+	bc = (r == 0 ? 0 : r + nparity);
+
+	/*
+	 * The total number of data and parity sectors associated with
+	 * this I/O.
+	 */
+	tot = s + nparity * (q + (r == 0 ? 0 : 1));
+
+	/* How many rows contain data (not skip) */
+	uint64_t rows = howmany(tot, logical_cols);
+	int cols = MIN(tot, logical_cols);
+
+	raidz_map_t *rm = kmem_zalloc(offsetof(raidz_map_t, rm_row[rows]),
+	    KM_SLEEP);
+	rm->rm_nrows = rows;
+
+	for (uint64_t row = 0; row < rows; row++) {
+		raidz_row_t *rr = kmem_alloc(offsetof(raidz_row_t,
+		    rr_col[cols]), KM_SLEEP);
+		rm->rm_row[row] = rr;
+
+		/* The starting RAIDZ (parent) vdev sector of the row. */
+		uint64_t b = (offset >> ashift) + row * logical_cols;
+
+		/*
+		 * If we are in the middle of a reflow, and any part of this
+		 * row has not been copied, then use the old location of
+		 * this row.
+		 */
+		int row_phys_cols = physical_cols;
+		if (b + (logical_cols - nparity) > reflow_offset >> ashift)
+			row_phys_cols--;
+
+		/* starting child of this row */
+		uint64_t child_id = b % row_phys_cols;
+		/* The starting byte offset on each child vdev. */
+		uint64_t child_offset = (b / row_phys_cols) << ashift;
+
+		/*
+		 * We set cols to the entire width of the block, even
+		 * if this row is shorter.  This is needed because parity
+		 * generation (for Q and R) needs to know the entire width,
+		 * because it treats the short row as though it was
+		 * full-width (and the "phantom" sectors were zero-filled).
+		 *
+		 * Another approach to this would be to set cols shorter
+		 * (to just the number of columns that we might do i/o to)
+		 * and have another mechanism to tell the parity generation
+		 * about the "entire width".  Reconstruction (at least
+		 * vdev_raidz_reconstruct_general()) would also need to
+		 * know about the "entire width".
+		 */
+		rr->rr_cols = cols;
+		rr->rr_bigcols = bc;
+		rr->rr_missingdata = 0;
+		rr->rr_missingparity = 0;
+		rr->rr_firstdatacol = nparity;
+		rr->rr_abd_empty = NULL;
+		rr->rr_nempty = 0;
+
+		for (int c = 0; c < rr->rr_cols; c++, child_id++) {
+			if (child_id >= row_phys_cols) {
+				child_id -= row_phys_cols;
+				child_offset += 1ULL << ashift;
+			}
+			rr->rr_col[c].rc_devidx = child_id;
+			rr->rr_col[c].rc_offset = child_offset;
+			rr->rr_col[c].rc_orig_data = NULL;
+			rr->rr_col[c].rc_error = 0;
+			rr->rr_col[c].rc_tried = 0;
+			rr->rr_col[c].rc_skipped = 0;
+			rr->rr_col[c].rc_need_orig_restore = B_FALSE;
+
+			uint64_t dc = c - rr->rr_firstdatacol;
+			if (c < rr->rr_firstdatacol) {
+				rr->rr_col[c].rc_size = 1ULL << ashift;
+				rr->rr_col[c].rc_abd =
+				    abd_alloc_linear(rr->rr_col[c].rc_size,
+				    B_TRUE);
+			} else if (row == rows - 1 && bc != 0 && c >= bc) {
+				/*
+				 * Past the end, this for parity generation.
+				 */
+				rr->rr_col[c].rc_size = 0;
+				rr->rr_col[c].rc_abd = NULL;
+			} else {
+				/*
+				 * "data column" (col excluding parity)
+				 * Add an ASCII art diagram here
+				 */
+				uint64_t off;
+
+				if (c < bc || r == 0) {
+					off = dc * rows + row;
+				} else {
+					off = r * rows +
+					    (dc - r) * (rows - 1) + row;
+				}
+				rr->rr_col[c].rc_size = 1ULL << ashift;
+				rr->rr_col[c].rc_abd = abd_get_offset_struct(
+				    &rr->rr_col[c].rc_abdstruct,
+				    abd, off << ashift, 1 << ashift);
+			}
+
+			asize += rr->rr_col[c].rc_size;
+		}
+		/*
+		 * If all data stored spans all columns, there's a danger that
+		 * parity will always be on the same device and, since parity
+		 * isn't read during normal operation, that that device's I/O
+		 * bandwidth won't be used effectively. We therefore switch
+		 * the parity every 1MB.
+		 *
+		 * ...at least that was, ostensibly, the theory. As a practical
+		 * matter unless we juggle the parity between all devices
+		 * evenly, we won't see any benefit. Further, occasional writes
+		 * that aren't a multiple of the LCM of the number of children
+		 * and the minimum stripe width are sufficient to avoid pessimal
+		 * behavior. Unfortunately, this decision created an implicit
+		 * on-disk format requirement that we need to support for all
+		 * eternity, but only for single-parity RAID-Z.
+		 *
+		 * If we intend to skip a sector in the zeroth column for
+		 * padding we must make sure to note this swap. We will never
+		 * intend to skip the first column since at least one data and
+		 * one parity column must appear in each row.
+		 */
+		if (rr->rr_firstdatacol == 1 && rr->rr_cols > 1 &&
+		    (offset & (1ULL << 20))) {
+			ASSERT(rr->rr_cols >= 2);
+			ASSERT(rr->rr_col[0].rc_size == rr->rr_col[1].rc_size);
+			devidx = rr->rr_col[0].rc_devidx;
+			uint64_t o = rr->rr_col[0].rc_offset;
+			rr->rr_col[0].rc_devidx = rr->rr_col[1].rc_devidx;
+			rr->rr_col[0].rc_offset = rr->rr_col[1].rc_offset;
+			rr->rr_col[1].rc_devidx = devidx;
+			rr->rr_col[1].rc_offset = o;
+		}
+
+	}
+	ASSERT3U(asize, ==, tot << ashift);
+
+	/* init RAIDZ parity ops */
+	rm->rm_ops = vdev_raidz_math_get_ops();
+
+	return (rm);
+}
+
 static raidz_map_t *
 init_raidz_map(raidz_test_opts_t *opts, zio_t **zio, const int parity)
 {
@ -378,9 +561,10 @@ init_raidz_map(raidz_test_opts_t *opts, zio_t **zio, const int parity)
 	init_zio_abd(*zio);

 	if (opts->rto_expand) {
-		rm = vdev_raidz_map_alloc_expanded(*zio,
+		rm = vdev_raidz_map_alloc_expanded((*zio)->io_abd,
+		    (*zio)->io_size, (*zio)->io_offset,
 		    opts->rto_ashift, total_ncols+1, total_ncols,
-		    parity, opts->rto_expand_offset, 0, B_FALSE);
+		    parity, opts->rto_expand_offset);
 	} else {
 		rm = vdev_raidz_map_alloc(*zio, opts->rto_ashift,
 		    total_ncols, parity);
--- a/cmd/raidz_test/raidz_test.h
+++ b/cmd/raidz_test/raidz_test.h
@ -119,4 +119,7 @@ void init_zio_abd(zio_t *zio);

 void run_raidz_benchmark(void);

+struct raidz_map *vdev_raidz_map_alloc_expanded(abd_t *, uint64_t, uint64_t,
+    uint64_t, uint64_t, uint64_t, uint64_t, uint64_t);
+
 #endif /* RAIDZ_TEST_H */
--- a/cmd/zdb/Makefile.am
+++ b/cmd/zdb/Makefile.am
@ -1,4 +1,4 @@
-zdb_CPPFLAGS = $(AM_CPPFLAGS) $(LIBZPOOL_CPPFLAGS)
+zdb_CPPFLAGS = $(AM_CPPFLAGS) $(FORCEDEBUG_CPPFLAGS)
 zdb_CFLAGS   = $(AM_CFLAGS) $(LIBCRYPTO_CFLAGS)

 sbin_PROGRAMS   += zdb
@ -10,7 +10,6 @@ zdb_SOURCES = \
 	%D%/zdb_il.c

 zdb_LDADD = \
-	libzdb.la \
 	libzpool.la \
 	libzfs_core.la \
 	libnvpair.la
--- a/cmd/zdb/zdb.c
+++ b/cmd/zdb/zdb.c
--- a/cmd/zdb/zdb_il.c
+++ b/cmd/zdb/zdb_il.c
@ -168,25 +168,23 @@ zil_prt_rec_write(zilog_t *zilog, int txtype, const void *arg)
 	    (u_longlong_t)lr->lr_foid, (u_longlong_t)lr->lr_offset,
 	    (u_longlong_t)lr->lr_length);

-	if (txtype == TX_WRITE2 || verbose < 4)
+	if (txtype == TX_WRITE2 || verbose < 5)
 		return;

 	if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) {
 		(void) printf("%shas blkptr, %s\n", tab_prefix,
-		    !BP_IS_HOLE(bp) && BP_GET_LOGICAL_BIRTH(bp) >=
-		    spa_min_claim_txg(zilog->zl_spa) ?
+		    !BP_IS_HOLE(bp) &&
+		    bp->blk_birth >= spa_min_claim_txg(zilog->zl_spa) ?
 		    "will claim" : "won't claim");
 		print_log_bp(bp, tab_prefix);

-		if (verbose < 5)
-			return;
 		if (BP_IS_HOLE(bp)) {
 			(void) printf("\t\t\tLSIZE 0x%llx\n",
 			    (u_longlong_t)BP_GET_LSIZE(bp));
 			(void) printf("%s<hole>\n", tab_prefix);
 			return;
 		}
-		if (BP_GET_LOGICAL_BIRTH(bp) < zilog->zl_header->zh_claim_txg) {
+		if (bp->blk_birth < zilog->zl_header->zh_claim_txg) {
 			(void) printf("%s<block already committed>\n",
 			    tab_prefix);
 			return;
@ -204,9 +202,6 @@ zil_prt_rec_write(zilog_t *zilog, int txtype, const void *arg)
 		if (error)
 			goto out;
 	} else {
-		if (verbose < 5)
-			return;
-
 		/* data is stored after the end of the lr_write record */
 		data = abd_alloc(lr->lr_length, B_FALSE);
 		abd_copy_from_buf(data, lr + 1, lr->lr_length);
@ -222,28 +217,6 @@ out:
 	abd_free(data);
 }

-static void
-zil_prt_rec_write_enc(zilog_t *zilog, int txtype, const void *arg)
-{
-	(void) txtype;
-	const lr_write_t *lr = arg;
-	const blkptr_t *bp = &lr->lr_blkptr;
-	int verbose = MAX(dump_opt['d'], dump_opt['i']);
-
-	(void) printf("%s(encrypted)\n", tab_prefix);
-
-	if (verbose < 4)
-		return;
-
-	if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) {
-		(void) printf("%shas blkptr, %s\n", tab_prefix,
-		    !BP_IS_HOLE(bp) && BP_GET_LOGICAL_BIRTH(bp) >=
-		    spa_min_claim_txg(zilog->zl_spa) ?
-		    "will claim" : "won't claim");
-		print_log_bp(bp, tab_prefix);
-	}
-}
-
 static void
 zil_prt_rec_truncate(zilog_t *zilog, int txtype, const void *arg)
 {
@ -339,34 +312,11 @@ zil_prt_rec_clone_range(zilog_t *zilog, int txtype, const void *arg)
 {
 	(void) zilog, (void) txtype;
 	const lr_clone_range_t *lr = arg;
-	int verbose = MAX(dump_opt['d'], dump_opt['i']);

 	(void) printf("%sfoid %llu, offset %llx, length %llx, blksize %llx\n",
 	    tab_prefix, (u_longlong_t)lr->lr_foid, (u_longlong_t)lr->lr_offset,
 	    (u_longlong_t)lr->lr_length, (u_longlong_t)lr->lr_blksz);

-	if (verbose < 4)
-		return;
-
-	for (unsigned int i = 0; i < lr->lr_nbps; i++) {
-		(void) printf("%s[%u/%llu] ", tab_prefix, i + 1,
-		    (u_longlong_t)lr->lr_nbps);
-		print_log_bp(&lr->lr_bps[i], "");
-	}
-}
-
-static void
-zil_prt_rec_clone_range_enc(zilog_t *zilog, int txtype, const void *arg)
-{
-	(void) zilog, (void) txtype;
-	const lr_clone_range_t *lr = arg;
-	int verbose = MAX(dump_opt['d'], dump_opt['i']);
-
-	(void) printf("%s(encrypted)\n", tab_prefix);
-
-	if (verbose < 4)
-		return;
-
 	for (unsigned int i = 0; i < lr->lr_nbps; i++) {
 		(void) printf("%s[%u/%llu] ", tab_prefix, i + 1,
 		    (u_longlong_t)lr->lr_nbps);
@ -377,7 +327,6 @@ zil_prt_rec_clone_range_enc(zilog_t *zilog, int txtype, const void *arg)
 typedef void (*zil_prt_rec_func_t)(zilog_t *, int, const void *);
 typedef struct zil_rec_info {
 	zil_prt_rec_func_t	zri_print;
-	zil_prt_rec_func_t	zri_print_enc;
 	const char		*zri_name;
 	uint64_t		zri_count;
 } zil_rec_info_t;
@ -392,9 +341,7 @@ static zil_rec_info_t zil_rec_info[TX_MAX_TYPE] = {
 	{.zri_print = zil_prt_rec_remove,   .zri_name = "TX_RMDIR           "},
 	{.zri_print = zil_prt_rec_link,	    .zri_name = "TX_LINK            "},
 	{.zri_print = zil_prt_rec_rename,   .zri_name = "TX_RENAME          "},
-	{.zri_print = zil_prt_rec_write,
-	    .zri_print_enc = zil_prt_rec_write_enc,
-	    .zri_name = "TX_WRITE           "},
+	{.zri_print = zil_prt_rec_write,    .zri_name = "TX_WRITE           "},
 	{.zri_print = zil_prt_rec_truncate, .zri_name = "TX_TRUNCATE        "},
 	{.zri_print = zil_prt_rec_setattr,  .zri_name = "TX_SETATTR         "},
 	{.zri_print = zil_prt_rec_acl,	    .zri_name = "TX_ACL_V0          "},
@ -411,7 +358,6 @@ static zil_rec_info_t zil_rec_info[TX_MAX_TYPE] = {
 	{.zri_print = zil_prt_rec_rename,   .zri_name = "TX_RENAME_EXCHANGE "},
 	{.zri_print = zil_prt_rec_rename,   .zri_name = "TX_RENAME_WHITEOUT "},
 	{.zri_print = zil_prt_rec_clone_range,
-	    .zri_print_enc = zil_prt_rec_clone_range_enc,
 	    .zri_name = "TX_CLONE_RANGE     "},
 };

@ -438,8 +384,6 @@ print_log_record(zilog_t *zilog, const lr_t *lr, void *arg, uint64_t claim_txg)
 	if (txtype && verbose >= 3) {
 		if (!zilog->zl_os->os_encrypted) {
 			zil_rec_info[txtype].zri_print(zilog, txtype, lr);
-		} else if (zil_rec_info[txtype].zri_print_enc) {
-			zil_rec_info[txtype].zri_print_enc(zilog, txtype, lr);
 		} else {
 			(void) printf("%s(encrypted)\n", tab_prefix);
 		}
@ -473,7 +417,7 @@ print_log_block(zilog_t *zilog, const blkptr_t *bp, void *arg,

 	if (claim_txg != 0)
 		claim = "already claimed";
-	else if (BP_GET_LOGICAL_BIRTH(bp) >= spa_min_claim_txg(zilog->zl_spa))
+	else if (bp->blk_birth >= spa_min_claim_txg(zilog->zl_spa))
 		claim = "will claim";
 	else
 		claim = "won't claim";
--- a/cmd/zed/agents/fmd_api.c
+++ b/cmd/zed/agents/fmd_api.c
@ -22,7 +22,6 @@
 * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
 *
 * Copyright (c) 2016, Intel Corporation.
- * Copyright (c) 2023, Klara Inc.
 */

 /*
@ -232,6 +231,28 @@ fmd_prop_get_int32(fmd_hdl_t *hdl, const char *name)
 	if (strcmp(name, "spare_on_remove") == 0)
 		return (1);

+	if (strcmp(name, "io_N") == 0 || strcmp(name, "checksum_N") == 0)
+		return (10);	/* N = 10 events */
+
+	return (0);
+}
+
+int64_t
+fmd_prop_get_int64(fmd_hdl_t *hdl, const char *name)
+{
+	(void) hdl;
+
+	/*
+	 * These can be looked up in mp->modinfo->fmdi_props
+	 * For now we just hard code for phase 2. In the
+	 * future, there can be a ZED based override.
+	 */
+	if (strcmp(name, "remove_timeout") == 0)
+		return (15ULL * 1000ULL * 1000ULL * 1000ULL);	/* 15 sec */
+
+	if (strcmp(name, "io_T") == 0 || strcmp(name, "checksum_T") == 0)
+		return (1000ULL * 1000ULL * 1000ULL * 600ULL);	/* 10 min */
+
 	return (0);
 }

@ -514,19 +535,6 @@ fmd_serd_exists(fmd_hdl_t *hdl, const char *name)
 	return (fmd_serd_eng_lookup(&mp->mod_serds, name) != NULL);
 }

-int
-fmd_serd_active(fmd_hdl_t *hdl, const char *name)
-{
-	fmd_module_t *mp = (fmd_module_t *)hdl;
-	fmd_serd_eng_t *sgp;
-
-	if ((sgp = fmd_serd_eng_lookup(&mp->mod_serds, name)) == NULL) {
-		zed_log_msg(LOG_ERR, "serd engine '%s' does not exist", name);
-		return (0);
-	}
-	return (fmd_serd_eng_fired(sgp) || !fmd_serd_eng_empty(sgp));
-}
-
 void
 fmd_serd_reset(fmd_hdl_t *hdl, const char *name)
 {
@ -535,10 +543,12 @@ fmd_serd_reset(fmd_hdl_t *hdl, const char *name)

 	if ((sgp = fmd_serd_eng_lookup(&mp->mod_serds, name)) == NULL) {
 		zed_log_msg(LOG_ERR, "serd engine '%s' does not exist", name);
-	} else {
-		fmd_serd_eng_reset(sgp);
-		fmd_hdl_debug(hdl, "serd_reset %s", name);
+		return;
 	}
+
+	fmd_serd_eng_reset(sgp);
+
+	fmd_hdl_debug(hdl, "serd_reset %s", name);
 }

 int
@ -546,21 +556,16 @@ fmd_serd_record(fmd_hdl_t *hdl, const char *name, fmd_event_t *ep)
 {
 	fmd_module_t *mp = (fmd_module_t *)hdl;
 	fmd_serd_eng_t *sgp;
+	int err;

 	if ((sgp = fmd_serd_eng_lookup(&mp->mod_serds, name)) == NULL) {
 		zed_log_msg(LOG_ERR, "failed to add record to SERD engine '%s'",
 		    name);
 		return (0);
 	}
-	return (fmd_serd_eng_record(sgp, ep->ev_hrt));
-}
+	err = fmd_serd_eng_record(sgp, ep->ev_hrt);

-void
-fmd_serd_gc(fmd_hdl_t *hdl)
-{
-	fmd_module_t *mp = (fmd_module_t *)hdl;
-
-	fmd_serd_hash_apply(&mp->mod_serds, fmd_serd_eng_gc, NULL);
+	return (err);
 }

 /* FMD Timers */
@ -574,7 +579,7 @@ _timer_notify(union sigval sv)
 	const fmd_hdl_ops_t *ops = mp->mod_info->fmdi_ops;
 	struct itimerspec its;

-	fmd_hdl_debug(hdl, "%s timer fired (%p)", mp->mod_name, ftp->ft_tid);
+	fmd_hdl_debug(hdl, "timer fired (%p)", ftp->ft_tid);

 	/* disarm the timer */
 	memset(&its, 0, sizeof (struct itimerspec));
--- a/cmd/zed/agents/fmd_api.h
+++ b/cmd/zed/agents/fmd_api.h
@ -151,6 +151,7 @@ extern void fmd_hdl_vdebug(fmd_hdl_t *, const char *, va_list);
 extern void fmd_hdl_debug(fmd_hdl_t *, const char *, ...);

 extern int32_t fmd_prop_get_int32(fmd_hdl_t *, const char *);
+extern int64_t fmd_prop_get_int64(fmd_hdl_t *, const char *);

 #define	FMD_STAT_NOALLOC	0x0	/* fmd should use caller's memory */
 #define	FMD_STAT_ALLOC		0x1	/* fmd should allocate stats memory */
@ -194,12 +195,10 @@ extern size_t fmd_buf_size(fmd_hdl_t *, fmd_case_t *, const char *);
 extern void fmd_serd_create(fmd_hdl_t *, const char *, uint_t, hrtime_t);
 extern void fmd_serd_destroy(fmd_hdl_t *, const char *);
 extern int fmd_serd_exists(fmd_hdl_t *, const char *);
-extern int fmd_serd_active(fmd_hdl_t *, const char *);
 extern void fmd_serd_reset(fmd_hdl_t *, const char *);
 extern int fmd_serd_record(fmd_hdl_t *, const char *, fmd_event_t *);
 extern int fmd_serd_fired(fmd_hdl_t *, const char *);
 extern int fmd_serd_empty(fmd_hdl_t *, const char *);
-extern void fmd_serd_gc(fmd_hdl_t *);

 extern id_t fmd_timer_install(fmd_hdl_t *, void *, fmd_event_t *, hrtime_t);
 extern void fmd_timer_remove(fmd_hdl_t *, id_t);
--- a/cmd/zed/agents/fmd_serd.c
+++ b/cmd/zed/agents/fmd_serd.c
@ -310,9 +310,8 @@ fmd_serd_eng_reset(fmd_serd_eng_t *sgp)
 }

 void
-fmd_serd_eng_gc(fmd_serd_eng_t *sgp, void *arg)
+fmd_serd_eng_gc(fmd_serd_eng_t *sgp)
 {
-	(void) arg;
 	fmd_serd_elem_t *sep, *nep;
 	hrtime_t hrt;

--- a/cmd/zed/agents/fmd_serd.h
+++ b/cmd/zed/agents/fmd_serd.h
@ -77,7 +77,7 @@ extern int fmd_serd_eng_fired(fmd_serd_eng_t *);
 extern int fmd_serd_eng_empty(fmd_serd_eng_t *);

 extern void fmd_serd_eng_reset(fmd_serd_eng_t *);
-extern void fmd_serd_eng_gc(fmd_serd_eng_t *, void *);
+extern void fmd_serd_eng_gc(fmd_serd_eng_t *);

 #ifdef	__cplusplus
 }
--- a/cmd/zed/agents/zfs_diagnosis.c
+++ b/cmd/zed/agents/zfs_diagnosis.c
@ -23,7 +23,6 @@
 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
 * Copyright 2015 Nexenta Systems, Inc.  All rights reserved.
 * Copyright (c) 2016, Intel Corporation.
- * Copyright (c) 2023, Klara Inc.
 */

 #include <stddef.h>
@ -48,16 +47,11 @@
 #define	DEFAULT_CHECKSUM_T	600	/* seconds */
 #define	DEFAULT_IO_N		10	/* events */
 #define	DEFAULT_IO_T		600	/* seconds */
-#define	DEFAULT_SLOW_IO_N	10	/* events */
-#define	DEFAULT_SLOW_IO_T	30	/* seconds */
-
-#define	CASE_GC_TIMEOUT_SECS	43200	/* 12 hours */

 /*
- * Our serd engines are named in the following format:
- *     'zfs_<pool_guid>_<vdev_guid>_{checksum,io,slow_io}'
- * This #define reserves enough space for two 64-bit hex values plus the
- * length of the longest string.
+ * Our serd engines are named 'zfs_<pool_guid>_<vdev_guid>_{checksum,io}'.  This
+ * #define reserves enough space for two 64-bit hex values plus the length of
+ * the longest string.
 */
 #define	MAX_SERDLEN	(16 * 2 + sizeof ("zfs___checksum"))

@ -74,7 +68,6 @@ typedef struct zfs_case_data {
 	int		zc_pool_state;
 	char		zc_serd_checksum[MAX_SERDLEN];
 	char		zc_serd_io[MAX_SERDLEN];
-	char		zc_serd_slow_io[MAX_SERDLEN];
 	int		zc_has_remove_timer;
 } zfs_case_data_t;

@ -121,8 +114,7 @@ zfs_de_stats_t zfs_stats = {
 	{ "resource_drops", FMD_TYPE_UINT64, "resource related ereports" }
 };

-/* wait 15 seconds after a removal */
-static hrtime_t zfs_remove_timeout = SEC2NSEC(15);
+static hrtime_t zfs_remove_timeout;

 uu_list_pool_t *zfs_case_pool;
 uu_list_t *zfs_cases;
@ -132,8 +124,6 @@ uu_list_t *zfs_cases;
 #define	ZFS_MAKE_EREPORT(type)	\
    FM_EREPORT_CLASS "." ZFS_ERROR_CLASS "." type

-static void zfs_purge_cases(fmd_hdl_t *hdl);
-
 /*
 * Write out the persistent representation of an active case.
 */
@ -180,42 +170,6 @@ zfs_case_unserialize(fmd_hdl_t *hdl, fmd_case_t *cp)
 	return (zcp);
 }

-/*
- * count other unique slow-io cases in a pool
- */
-static uint_t
-zfs_other_slow_cases(fmd_hdl_t *hdl, const zfs_case_data_t *zfs_case)
-{
-	zfs_case_t *zcp;
-	uint_t cases = 0;
-	static hrtime_t next_check = 0;
-
-	/*
-	 * Note that plumbing in some external GC would require adding locking,
-	 * since most of this module code is not thread safe and assumes there
-	 * is only one thread running against the module. So we perform GC here
-	 * inline periodically so that future delay induced faults will be
-	 * possible once the issue causing multiple vdev delays is resolved.
-	 */
-	if (gethrestime_sec() > next_check) {
-		/* Periodically purge old SERD entries and stale cases */
-		fmd_serd_gc(hdl);
-		zfs_purge_cases(hdl);
-		next_check = gethrestime_sec() + CASE_GC_TIMEOUT_SECS;
-	}
-
-	for (zcp = uu_list_first(zfs_cases); zcp != NULL;
-	    zcp = uu_list_next(zfs_cases, zcp)) {
-		if (zcp->zc_data.zc_pool_guid == zfs_case->zc_pool_guid &&
-		    zcp->zc_data.zc_vdev_guid != zfs_case->zc_vdev_guid &&
-		    zcp->zc_data.zc_serd_slow_io[0] != '\0' &&
-		    fmd_serd_active(hdl, zcp->zc_data.zc_serd_slow_io)) {
-			cases++;
-		}
-	}
-	return (cases);
-}
-
 /*
 * Iterate over any active cases.  If any cases are associated with a pool or
 * vdev which is no longer present on the system, close the associated case.
@ -422,14 +376,6 @@ zfs_serd_name(char *buf, uint64_t pool_guid, uint64_t vdev_guid,
 	    (long long unsigned int)vdev_guid, type);
 }

-static void
-zfs_case_retire(fmd_hdl_t *hdl, zfs_case_t *zcp)
-{
-	fmd_hdl_debug(hdl, "retiring case");
-
-	fmd_case_close(hdl, zcp->zc_case);
-}
-
 /*
 * Solve a given ZFS case.  This first checks to make sure the diagnosis is
 * still valid, as well as cleaning up any pending timer associated with the
@ -686,7 +632,9 @@ zfs_fm_recv(fmd_hdl_t *hdl, fmd_event_t *ep, nvlist_t *nvl, const char *class)
 		if (strcmp(class,
 		    ZFS_MAKE_EREPORT(FM_EREPORT_ZFS_DATA)) == 0 ||
 		    strcmp(class,
-		    ZFS_MAKE_EREPORT(FM_EREPORT_ZFS_CONFIG_CACHE_WRITE)) == 0) {
+		    ZFS_MAKE_EREPORT(FM_EREPORT_ZFS_CONFIG_CACHE_WRITE)) == 0 ||
+		    strcmp(class,
+		    ZFS_MAKE_EREPORT(FM_EREPORT_ZFS_DELAY)) == 0) {
 			zfs_stats.resource_drops.fmds_value.ui64++;
 			return;
 		}
@ -754,9 +702,6 @@ zfs_fm_recv(fmd_hdl_t *hdl, fmd_event_t *ep, nvlist_t *nvl, const char *class)
 			if (zcp->zc_data.zc_serd_checksum[0] != '\0')
 				fmd_serd_reset(hdl,
 				    zcp->zc_data.zc_serd_checksum);
-			if (zcp->zc_data.zc_serd_slow_io[0] != '\0')
-				fmd_serd_reset(hdl,
-				    zcp->zc_data.zc_serd_slow_io);
 		} else if (fmd_nvl_class_match(hdl, nvl,
 		    ZFS_MAKE_RSRC(FM_RESOURCE_STATECHANGE))) {
 			uint64_t state = 0;
@ -785,10 +730,6 @@ zfs_fm_recv(fmd_hdl_t *hdl, fmd_event_t *ep, nvlist_t *nvl, const char *class)
 	if (fmd_case_solved(hdl, zcp->zc_case))
 		return;

-	if (vdev_guid)
-		fmd_hdl_debug(hdl, "error event '%s', vdev %llu", class,
-		    vdev_guid);
-	else
 	fmd_hdl_debug(hdl, "error event '%s'", class);

 	/*
@ -838,12 +779,11 @@ zfs_fm_recv(fmd_hdl_t *hdl, fmd_event_t *ep, nvlist_t *nvl, const char *class)
 	    fmd_nvl_class_match(hdl, nvl,
 	    ZFS_MAKE_EREPORT(FM_EREPORT_ZFS_IO_FAILURE)) ||
 	    fmd_nvl_class_match(hdl, nvl,
-	    ZFS_MAKE_EREPORT(FM_EREPORT_ZFS_DELAY)) ||
-	    fmd_nvl_class_match(hdl, nvl,
 	    ZFS_MAKE_EREPORT(FM_EREPORT_ZFS_PROBE_FAILURE))) {
 		const char *failmode = NULL;
 		boolean_t checkremove = B_FALSE;
 		uint32_t pri = 0;
+		int32_t flags = 0;

 		/*
 		 * If this is a checksum or I/O error, then toss it into the
@ -874,75 +814,20 @@ zfs_fm_recv(fmd_hdl_t *hdl, fmd_event_t *ep, nvlist_t *nvl, const char *class)
 			}
 			if (fmd_serd_record(hdl, zcp->zc_data.zc_serd_io, ep))
 				checkremove = B_TRUE;
-		} else if (fmd_nvl_class_match(hdl, nvl,
-		    ZFS_MAKE_EREPORT(FM_EREPORT_ZFS_DELAY))) {
-			uint64_t slow_io_n, slow_io_t;
-
-			/*
-			 * Create a slow io SERD engine when the VDEV has the
-			 * 'vdev_slow_io_n' and 'vdev_slow_io_n' properties.
-			 */
-			if (zcp->zc_data.zc_serd_slow_io[0] == '\0' &&
-			    nvlist_lookup_uint64(nvl,
-			    FM_EREPORT_PAYLOAD_ZFS_VDEV_SLOW_IO_N,
-			    &slow_io_n) == 0 &&
-			    nvlist_lookup_uint64(nvl,
-			    FM_EREPORT_PAYLOAD_ZFS_VDEV_SLOW_IO_T,
-			    &slow_io_t) == 0) {
-				zfs_serd_name(zcp->zc_data.zc_serd_slow_io,
-				    pool_guid, vdev_guid, "slow_io");
-				fmd_serd_create(hdl,
-				    zcp->zc_data.zc_serd_slow_io,
-				    slow_io_n,
-				    SEC2NSEC(slow_io_t));
-				zfs_case_serialize(zcp);
-			}
-			/* Pass event to SERD engine and see if this triggers */
-			if (zcp->zc_data.zc_serd_slow_io[0] != '\0' &&
-			    fmd_serd_record(hdl, zcp->zc_data.zc_serd_slow_io,
-			    ep)) {
-				/*
-				 * Ignore a slow io diagnosis when other
-				 * VDEVs in the pool show signs of being slow.
-				 */
-				if (zfs_other_slow_cases(hdl, &zcp->zc_data)) {
-					zfs_case_retire(hdl, zcp);
-					fmd_hdl_debug(hdl, "pool %llu has "
-					    "multiple slow io cases -- skip "
-					    "degrading vdev %llu",
-					    (u_longlong_t)
-					    zcp->zc_data.zc_pool_guid,
-					    (u_longlong_t)
-					    zcp->zc_data.zc_vdev_guid);
-				} else {
-					zfs_case_solve(hdl, zcp,
-					    "fault.fs.zfs.vdev.slow_io");
-				}
-			}
 		} else if (fmd_nvl_class_match(hdl, nvl,
 		    ZFS_MAKE_EREPORT(FM_EREPORT_ZFS_CHECKSUM))) {
-			uint64_t flags = 0;
-			int32_t flags32 = 0;
 			/*
 			 * We ignore ereports for checksum errors generated by
 			 * scrub/resilver I/O to avoid potentially further
 			 * degrading the pool while it's being repaired.
-			 *
-			 * Note that FM_EREPORT_PAYLOAD_ZFS_ZIO_FLAGS used to
-			 * be int32. To allow newer zed to work on older
-			 * kernels, if we don't find the flags, we look for
-			 * the older ones too.
 			 */
 			if (((nvlist_lookup_uint32(nvl,
 			    FM_EREPORT_PAYLOAD_ZFS_ZIO_PRIORITY, &pri) == 0) &&
 			    (pri == ZIO_PRIORITY_SCRUB ||
 			    pri == ZIO_PRIORITY_REBUILD)) ||
-			    ((nvlist_lookup_uint64(nvl,
-			    FM_EREPORT_PAYLOAD_ZFS_ZIO_FLAGS, &flags) == 0) &&
-			    (flags & (ZIO_FLAG_SCRUB | ZIO_FLAG_RESILVER))) ||
 			    ((nvlist_lookup_int32(nvl,
-			    FM_EREPORT_PAYLOAD_ZFS_ZIO_FLAGS, &flags32) == 0) &&
-			    (flags32 & (ZIO_FLAG_SCRUB | ZIO_FLAG_RESILVER)))) {
+			    FM_EREPORT_PAYLOAD_ZFS_ZIO_FLAGS, &flags) == 0) &&
+			    (flags & (ZIO_FLAG_SCRUB | ZIO_FLAG_RESILVER)))) {
 				fmd_hdl_debug(hdl, "ignoring '%s' for "
 				    "scrub/resilver I/O", class);
 				return;
@ -1039,8 +924,6 @@ zfs_fm_close(fmd_hdl_t *hdl, fmd_case_t *cs)
 		fmd_serd_destroy(hdl, zcp->zc_data.zc_serd_checksum);
 	if (zcp->zc_data.zc_serd_io[0] != '\0')
 		fmd_serd_destroy(hdl, zcp->zc_data.zc_serd_io);
-	if (zcp->zc_data.zc_serd_slow_io[0] != '\0')
-		fmd_serd_destroy(hdl, zcp->zc_data.zc_serd_slow_io);
 	if (zcp->zc_data.zc_has_remove_timer)
 		fmd_timer_remove(hdl, zcp->zc_remove_timer);

@ -1049,15 +932,30 @@ zfs_fm_close(fmd_hdl_t *hdl, fmd_case_t *cs)
 	fmd_hdl_free(hdl, zcp, sizeof (zfs_case_t));
 }

+/*
+ * We use the fmd gc entry point to look for old cases that no longer apply.
+ * This allows us to keep our set of case data small in a long running system.
+ */
+static void
+zfs_fm_gc(fmd_hdl_t *hdl)
+{
+	zfs_purge_cases(hdl);
+}
+
 static const fmd_hdl_ops_t fmd_ops = {
 	zfs_fm_recv,	/* fmdo_recv */
 	zfs_fm_timeout,	/* fmdo_timeout */
 	zfs_fm_close,	/* fmdo_close */
 	NULL,		/* fmdo_stats */
-	NULL,	/* fmdo_gc */
+	zfs_fm_gc,	/* fmdo_gc */
 };

 static const fmd_prop_t fmd_props[] = {
+	{ "checksum_N", FMD_TYPE_UINT32, "10" },
+	{ "checksum_T", FMD_TYPE_TIME, "10min" },
+	{ "io_N", FMD_TYPE_UINT32, "10" },
+	{ "io_T", FMD_TYPE_TIME, "10min" },
+	{ "remove_timeout", FMD_TYPE_TIME, "15sec" },
 	{ NULL, 0, NULL }
 };

@ -1098,6 +996,8 @@ _zfs_diagnosis_init(fmd_hdl_t *hdl)

 	(void) fmd_stat_create(hdl, FMD_STAT_NOALLOC, sizeof (zfs_stats) /
 	    sizeof (fmd_stat_t), (fmd_stat_t *)&zfs_stats);
+
+	zfs_remove_timeout = fmd_prop_get_int64(hdl, "remove_timeout");
 }

 void
--- a/cmd/zed/agents/zfs_mod.c
+++ b/cmd/zed/agents/zfs_mod.c
@ -233,12 +233,8 @@ zfs_process_add(zpool_handle_t *zhp, nvlist_t *vdev, boolean_t labeled)
 	}

 	(void) nvlist_lookup_string(vdev, ZPOOL_CONFIG_PHYS_PATH, &physpath);
-
-	update_vdev_config_dev_sysfs_path(vdev, path,
-	    ZPOOL_CONFIG_VDEV_ENC_SYSFS_PATH);
 	(void) nvlist_lookup_string(vdev, ZPOOL_CONFIG_VDEV_ENC_SYSFS_PATH,
 	    &enc_sysfs_path);
-
 	(void) nvlist_lookup_uint64(vdev, ZPOOL_CONFIG_WHOLE_DISK, &wholedisk);
 	(void) nvlist_lookup_uint64(vdev, ZPOOL_CONFIG_OFFLINE, &offline);
 	(void) nvlist_lookup_uint64(vdev, ZPOOL_CONFIG_FAULTED, &faulted);
@ -702,7 +698,7 @@ zfs_enable_ds(void *arg)
 {
 	unavailpool_t *pool = (unavailpool_t *)arg;

-	(void) zpool_enable_datasets(pool->uap_zhp, NULL, 0, 512);
+	(void) zpool_enable_datasets(pool->uap_zhp, NULL, 0);
 	zpool_close(pool->uap_zhp);
 	free(pool);
 }
--- a/cmd/zed/agents/zfs_retire.c
+++ b/cmd/zed/agents/zfs_retire.c
@ -523,9 +523,6 @@ zfs_retire_recv(fmd_hdl_t *hdl, fmd_event_t *ep, nvlist_t *nvl,
 		} else if (fmd_nvl_class_match(hdl, fault,
 		    "fault.fs.zfs.vdev.checksum")) {
 			degrade_device = B_TRUE;
-		} else if (fmd_nvl_class_match(hdl, fault,
-		    "fault.fs.zfs.vdev.slow_io")) {
-			degrade_device = B_TRUE;
 		} else if (fmd_nvl_class_match(hdl, fault,
 		    "fault.fs.zfs.device")) {
 			fault_device = B_FALSE;
--- a/cmd/zed/zed.d/Makefile.am
+++ b/cmd/zed/zed.d/Makefile.am
@ -9,7 +9,6 @@ dist_zedexec_SCRIPTS = \
 	%D%/all-debug.sh \
 	%D%/all-syslog.sh \
 	%D%/data-notify.sh \
-	%D%/deadman-slot_off.sh \
 	%D%/generic-notify.sh \
 	%D%/pool_import-led.sh \
 	%D%/resilver_finish-notify.sh \
@ -30,7 +29,6 @@ SUBSTFILES += $(nodist_zedexec_SCRIPTS)
 zedconfdefaults = \
 	all-syslog.sh \
 	data-notify.sh \
-	deadman-slot_off.sh \
 	history_event-zfs-list-cacher.sh \
 	pool_import-led.sh \
 	resilver_finish-notify.sh \
--- a/cmd/zed/zed.d/deadman-slot_off.sh
+++ b/cmd/zed/zed.d/deadman-slot_off.sh
@ -1,71 +0,0 @@
-#!/bin/sh
-# shellcheck disable=SC3014,SC2154,SC2086,SC2034
-#
-# Turn off disk's enclosure slot if an I/O is hung triggering the deadman.
-#
-# It's possible for outstanding I/O to a misbehaving SCSI disk to neither
-# promptly complete or return an error.  This can occur due to retry and
-# recovery actions taken by the SCSI layer, driver, or disk.  When it occurs
-# the pool will be unresponsive even though there may be sufficient redundancy
-# configured to proceeded without this single disk.
-#
-# When a hung I/O is detected by the kmods it will be posted as a deadman
-# event.  By default an I/O is considered to be hung after 5 minutes.  This
-# value can be changed with the zfs_deadman_ziotime_ms module parameter.
-# If ZED_POWER_OFF_ENCLOSURE_SLOT_ON_DEADMAN is set the disk's enclosure
-# slot will be powered off causing the outstanding I/O to fail.  The ZED
-# will then handle this like a normal disk failure and FAULT the vdev.
-#
-# We assume the user will be responsible for turning the slot back on
-# after replacing the disk.
-#
-# Note that this script requires that your enclosure be supported by the
-# Linux SCSI Enclosure services (SES) driver.  The script will do nothing
-# if you have no enclosure, or if your enclosure isn't supported.
-#
-# Exit codes:
-#   0: slot successfully powered off
-#   1: enclosure not available
-#   2: ZED_POWER_OFF_ENCLOSURE_SLOT_ON_DEADMAN disabled
-#   3: System not configured to wait on deadman
-#   4: The enclosure sysfs path passed from ZFS does not exist
-#   5: Enclosure slot didn't actually turn off after we told it to
-
-[ -f "${ZED_ZEDLET_DIR}/zed.rc" ] && . "${ZED_ZEDLET_DIR}/zed.rc"
-. "${ZED_ZEDLET_DIR}/zed-functions.sh"
-
-if [ ! -d /sys/class/enclosure ] ; then
-	# No JBOD enclosure or NVMe slots
-	exit 1
-fi
-
-if [ "${ZED_POWER_OFF_ENCLOSURE_SLOT_ON_DEADMAN}" != "1" ] ; then
-	exit 2
-fi
-
-if [ "$ZEVENT_POOL_FAILMODE" != "wait" ] ; then
-	exit 3
-fi
-
-if [ ! -f "$ZEVENT_VDEV_ENC_SYSFS_PATH/power_status" ] ; then
-	exit 4
-fi
-
-# Turn off the slot and wait for sysfs to report that the slot is off.
-# It can take ~400ms on some enclosures and multiple retries may be needed.
-for i in $(seq 1 20) ; do
-	echo "off" | tee "$ZEVENT_VDEV_ENC_SYSFS_PATH/power_status"
-
-	for j in $(seq 1 5) ; do
-		if [ "$(cat $ZEVENT_VDEV_ENC_SYSFS_PATH/power_status)" == "off" ] ; then
-			break 2
-		fi
-		sleep 0.1
-	done
-done
-
-if [ "$(cat $ZEVENT_VDEV_ENC_SYSFS_PATH/power_status)" != "off" ] ; then
-	exit 5
-fi
-
-zed_log_msg "powered down slot $ZEVENT_VDEV_ENC_SYSFS_PATH for $ZEVENT_VDEV_PATH"
--- a/cmd/zed/zed.d/statechange-slot_off.sh
+++ b/cmd/zed/zed.d/statechange-slot_off.sh
@ -5,7 +5,7 @@
 #
 # Bad SCSI disks can often "disappear and reappear" causing all sorts of chaos
 # as they flip between FAULTED and ONLINE.  If
-# ZED_POWER_OFF_ENCLOSURE_SLOT_ON_FAULT is set in zed.rc, and the disk gets
+# ZED_POWER_OFF_ENCLOUSRE_SLOT_ON_FAULT is set in zed.rc, and the disk gets
 # FAULTED, then power down the slot via sysfs:
 #
 # /sys/class/enclosure/<enclosure>/<slot>/power_status
@ -19,7 +19,7 @@
 # Exit codes:
 #   0: slot successfully powered off
 #   1: enclosure not available
-#   2: ZED_POWER_OFF_ENCLOSURE_SLOT_ON_FAULT disabled
+#   2: ZED_POWER_OFF_ENCLOUSRE_SLOT_ON_FAULT disabled
 #   3: vdev was not FAULTED
 #   4: The enclosure sysfs path passed from ZFS does not exist
 #   5: Enclosure slot didn't actually turn off after we told it to
@ -32,7 +32,7 @@ if [ ! -d /sys/class/enclosure ] ; then
 	exit 1
 fi

-if [ "${ZED_POWER_OFF_ENCLOSURE_SLOT_ON_FAULT}" != "1" ] ; then
+if [ "${ZED_POWER_OFF_ENCLOUSRE_SLOT_ON_FAULT}" != "1" ] ; then
 	exit 2
 fi

--- a/cmd/zed/zed.d/zed-functions.sh
+++ b/cmd/zed/zed.d/zed-functions.sh
@ -205,14 +205,6 @@ zed_notify()
    [ "${rv}" -eq 0 ] && num_success=$((num_success + 1))
    [ "${rv}" -eq 1 ] && num_failure=$((num_failure + 1))

-    zed_notify_ntfy "${subject}" "${pathname}"; rv=$?
-    [ "${rv}" -eq 0 ] && num_success=$((num_success + 1))
-    [ "${rv}" -eq 1 ] && num_failure=$((num_failure + 1))
-
-    zed_notify_gotify "${subject}" "${pathname}"; rv=$?
-    [ "${rv}" -eq 0 ] && num_success=$((num_success + 1))
-    [ "${rv}" -eq 1 ] && num_failure=$((num_failure + 1))
-
    [ "${num_success}" -gt 0 ] && return 0
    [ "${num_failure}" -gt 0 ] && return 1
    return 2
@ -535,191 +527,6 @@ zed_notify_pushover()
 }


-# zed_notify_ntfy (subject, pathname)
-#
-# Send a notification via Ntfy.sh <https://ntfy.sh/>.
-# The ntfy topic (ZED_NTFY_TOPIC) identifies the topic that the notification
-# will be sent to Ntfy.sh server. The ntfy url (ZED_NTFY_URL) defines the
-# self-hosted or provided hosted ntfy service location. The ntfy access token
-# <https://docs.ntfy.sh/publish/#access-tokens> (ZED_NTFY_ACCESS_TOKEN) reprsents an
-# access token that could be used if a topic is read/write protected. If a
-# topic can be written to publicaly, a ZED_NTFY_ACCESS_TOKEN is not required.
-#
-# Requires curl and sed executables to be installed in the standard PATH.
-#
-# References
-#   https://docs.ntfy.sh
-#
-# Arguments
-#   subject: notification subject
-#   pathname: pathname containing the notification message (OPTIONAL)
-#
-# Globals
-#   ZED_NTFY_TOPIC
-#   ZED_NTFY_ACCESS_TOKEN (OPTIONAL)
-#   ZED_NTFY_URL
-#
-# Return
-#   0: notification sent
-#   1: notification failed
-#   2: not configured
-#
-zed_notify_ntfy()
-{
-    local subject="$1"
-    local pathname="${2:-"/dev/null"}"
-    local msg_body
-    local msg_out
-    local msg_err
-
-    [ -n "${ZED_NTFY_TOPIC}" ] || return 2
-    local url="${ZED_NTFY_URL:-"https://ntfy.sh"}/${ZED_NTFY_TOPIC}"
-
-    if [ ! -r "${pathname}" ]; then
-        zed_log_err "ntfy cannot read \"${pathname}\""
-        return 1
-    fi
-
-    zed_check_cmd "curl" "sed" || return 1
-
-    # Read the message body in.
-    #
-    msg_body="$(cat "${pathname}")"
-
-    if [ -z "${msg_body}" ]
-    then
-        msg_body=$subject
-        subject=""
-    fi
-
-    # Send the POST request and check for errors.
-    #
-    if [ -n "${ZED_NTFY_ACCESS_TOKEN}" ]; then
-        msg_out="$( \
-        curl \
-        -u ":${ZED_NTFY_ACCESS_TOKEN}" \
-        -H "Title: ${subject}" \
-        -d "${msg_body}" \
-        -H "Priority: high" \
-        "${url}" \
-        2>/dev/null \
-        )"; rv=$?
-    else
-        msg_out="$( \
-        curl \
-        -H "Title: ${subject}" \
-        -d "${msg_body}" \
-        -H "Priority: high" \
-        "${url}" \
-        2>/dev/null \
-        )"; rv=$?
-    fi
-    if [ "${rv}" -ne 0 ]; then
-        zed_log_err "curl exit=${rv}"
-        return 1
-    fi
-    msg_err="$(echo "${msg_out}" \
-        | sed -n -e 's/.*"errors" *:.*\[\(.*\)\].*/\1/p')"
-    if [ -n "${msg_err}" ]; then
-        zed_log_err "ntfy \"${msg_err}"\"
-        return 1
-    fi
-    return 0
-}
-
-
-# zed_notify_gotify (subject, pathname)
-#
-# Send a notification via Gotify <https://gotify.net/>.
-# The Gotify URL (ZED_GOTIFY_URL) defines a self-hosted Gotify location.
-# The Gotify application token (ZED_GOTIFY_APPTOKEN) defines a
-# Gotify application token which is associated with a message.
-# The optional Gotify priority value (ZED_GOTIFY_PRIORITY) overrides the
-# default or configured priority at the Gotify server for the application.
-#
-# Requires curl and sed executables to be installed in the standard PATH.
-#
-# References
-#   https://gotify.net/docs/index
-#
-# Arguments
-#   subject: notification subject
-#   pathname: pathname containing the notification message (OPTIONAL)
-#
-# Globals
-#   ZED_GOTIFY_URL
-#   ZED_GOTIFY_APPTOKEN
-#   ZED_GOTIFY_PRIORITY
-#
-# Return
-#   0: notification sent
-#   1: notification failed
-#   2: not configured
-#
-zed_notify_gotify()
-{
-    local subject="$1"
-    local pathname="${2:-"/dev/null"}"
-    local msg_body
-    local msg_out
-    local msg_err
-
-    [ -n "${ZED_GOTIFY_URL}" ] && [ -n "${ZED_GOTIFY_APPTOKEN}" ] || return 2
-    local url="${ZED_GOTIFY_URL}/message?token=${ZED_GOTIFY_APPTOKEN}"
-
-    if [ ! -r "${pathname}" ]; then
-        zed_log_err "gotify cannot read \"${pathname}\""
-        return 1
-    fi
-
-    zed_check_cmd "curl" "sed" || return 1
-
-    # Read the message body in.
-    #
-    msg_body="$(cat "${pathname}")"
-
-    if [ -z "${msg_body}" ]
-    then
-        msg_body=$subject
-        subject=""
-    fi
-
-    # Send the POST request and check for errors.
-    #
-    if [ -n "${ZED_GOTIFY_PRIORITY}" ]; then
-        msg_out="$( \
-        curl \
-        --form-string "title=${subject}" \
-        --form-string "message=${msg_body}" \
-        --form-string "priority=${ZED_GOTIFY_PRIORITY}" \
-        "${url}" \
-        2>/dev/null \
-        )"; rv=$?
-    else
-        msg_out="$( \
-        curl \
-        --form-string "title=${subject}" \
-        --form-string "message=${msg_body}" \
-        "${url}" \
-        2>/dev/null \
-        )"; rv=$?
-    fi
-
-    if [ "${rv}" -ne 0 ]; then
-        zed_log_err "curl exit=${rv}"
-        return 1
-    fi
-    msg_err="$(echo "${msg_out}" \
-        | sed -n -e 's/.*"errors" *:.*\[\(.*\)\].*/\1/p')"
-    if [ -n "${msg_err}" ]; then
-        zed_log_err "gotify \"${msg_err}"\"
-        return 1
-    fi
-    return 0
-}
-
-
-
 # zed_rate_limit (tag, [interval])
 #
 # Check whether an event of a given type [tag] has already occurred within the
--- a/cmd/zed/zed.d/zed.rc
+++ b/cmd/zed/zed.d/zed.rc
@ -146,54 +146,4 @@ ZED_SYSLOG_SUBCLASS_EXCLUDE="history_event"
 # Power off the drive's slot in the enclosure if it becomes FAULTED.  This can
 # help silence misbehaving drives.  This assumes your drive enclosure fully
 # supports slot power control via sysfs.
-#ZED_POWER_OFF_ENCLOSURE_SLOT_ON_FAULT=1
-
-##
-# Power off the drive's slot in the enclosure if there is a hung I/O which
-# exceeds the deadman timeout.  This can help prevent a single misbehaving
-# drive from rendering a redundant pool unavailable.  This assumes your drive
-# enclosure fully supports slot power control via sysfs.
-#ZED_POWER_OFF_ENCLOSURE_SLOT_ON_DEADMAN=1
-
-##
-# Ntfy topic
-# This defines which topic will receive the ntfy notification.
-#  <https://docs.ntfy.sh/publish/>
-# Disabled by default; uncomment to enable.
-#ZED_NTFY_TOPIC=""
-
-##
-# Ntfy access token (optional for public topics)
-# This defines an access token which can be used
-# to allow you to authenticate when sending to topics
-# <https://docs.ntfy.sh/publish/#access-tokens>
-# Disabled by default; uncomment to enable.
-#ZED_NTFY_ACCESS_TOKEN=""
-
-##
-# Ntfy Service URL
-# This defines which service the ntfy call will be directed toward
-#  <https://docs.ntfy.sh/install/>
-# https://ntfy.sh by default; uncomment to enable an alternative service url.
-#ZED_NTFY_URL="https://ntfy.sh"
-
-##
-# Gotify server URL
-# This defines a URL that the Gotify call will be directed toward.
-# <https://gotify.net/docs/index>
-# Disabled by default; uncomment to enable.
-#ZED_GOTIFY_URL=""
-
-##
-# Gotify application token
-# This defines a Gotify application token which a message is associated with.
-# This token is generated when an application is created on the Gotify server.
-# Disabled by default; uncomment to enable.
-#ZED_GOTIFY_APPTOKEN=""
-
-##
-# Gotify priority (optional)
-# If defined, this overrides the default priority of the
-# Gotify application associated with ZED_GOTIFY_APPTOKEN.
-# Value is an integer 0 and up.
-#ZED_GOTIFY_PRIORITY=""
+#ZED_POWER_OFF_ENCLOUSRE_SLOT_ON_FAULT=1
--- a/cmd/zed/zed_event.c
+++ b/cmd/zed/zed_event.c
@ -35,7 +35,6 @@
 #include "zed_strings.h"

 #include "agents/zfs_agents.h"
-#include <libzutil.h>

 #define	MAXBUF	4096

@ -923,25 +922,6 @@ _zed_event_add_time_strings(uint64_t eid, zed_strings_t *zsp, int64_t etime[])
 	}
 }

-
-static void
-_zed_event_update_enc_sysfs_path(nvlist_t *nvl)
-{
-	const char *vdev_path;
-
-	if (nvlist_lookup_string(nvl, FM_EREPORT_PAYLOAD_ZFS_VDEV_PATH,
-	    &vdev_path) != 0) {
-		return; /* some other kind of event, ignore it */
-	}
-
-	if (vdev_path == NULL) {
-		return;
-	}
-
-	update_vdev_config_dev_sysfs_path(nvl, vdev_path,
-	    FM_EREPORT_PAYLOAD_ZFS_VDEV_ENC_SYSFS_PATH);
-}
-
 /*
 * Service the next zevent, blocking until one is available.
 */
@ -989,17 +969,6 @@ zed_event_service(struct zed_conf *zcp)
 		zed_log_msg(LOG_WARNING,
 		    "Failed to lookup zevent class (eid=%llu)", eid);
 	} else {
-		/*
-		 * Special case: If we can dynamically detect an enclosure sysfs
-		 * path, then use that value rather than the one stored in the
-		 * vd->vdev_enc_sysfs_path.  There have been rare cases where
-		 * vd->vdev_enc_sysfs_path becomes outdated.  However, there
-		 * will be other times when we can not dynamically detect the
-		 * sysfs path (like if a disk disappears) and have to rely on
-		 * the old value for things like turning on the fault LED.
-		 */
-		_zed_event_update_enc_sysfs_path(nvl);
-
 		/* let internal modules see this event first */
 		zfs_agent_post_event(class, NULL, nvl);

--- a/cmd/zfs/zfs_main.c
+++ b/cmd/zfs/zfs_main.c
@ -134,10 +134,6 @@ static int zfs_do_unzone(int argc, char **argv);

 static int zfs_do_help(int argc, char **argv);

-enum zfs_options {
-	ZFS_OPTION_JSON_NUMS_AS_INT = 1024
-};
-
 /*
 * Enable a reasonable set of defaults for libumem debugging on DEBUG builds.
 */
@ -276,8 +272,6 @@ static zfs_command_t command_table[] = {

 #define	NCOMMAND	(sizeof (command_table) / sizeof (command_table[0]))

-#define	MAX_CMD_LEN	256
-
 zfs_command_t *current_command;

 static const char *
@ -298,7 +292,7 @@ get_usage(zfs_help_t idx)
 		    "<filesystem|volume>@<snap>[%<snap>][,...]\n"
 		    "\tdestroy <filesystem|volume>#<bookmark>\n"));
 	case HELP_GET:
-		return (gettext("\tget [-rHp] [-j [--json-int]] [-d max] "
+		return (gettext("\tget [-rHp] [-d max] "
 		    "[-o \"all\" | field[,...]]\n"
 		    "\t    [-t type[,...]] [-s source[,...]]\n"
 		    "\t    <\"all\" | property[,...]> "
@ -310,14 +304,12 @@ get_usage(zfs_help_t idx)
 		return (gettext("\tupgrade [-v]\n"
 		    "\tupgrade [-r] [-V version] <-a | filesystem ...>\n"));
 	case HELP_LIST:
-		return (gettext("\tlist [-Hp] [-j [--json-int]] [-r|-d max] "
-		    "[-o property[,...]] [-s property]...\n\t    "
-		    "[-S property]... [-t type[,...]] "
+		return (gettext("\tlist [-Hp] [-r|-d max] [-o property[,...]] "
+		    "[-s property]...\n\t    [-S property]... [-t type[,...]] "
 		    "[filesystem|volume|snapshot] ...\n"));
 	case HELP_MOUNT:
-		return (gettext("\tmount [-j]\n"
-		    "\tmount [-flvO] [-o opts] <-a|-R filesystem|"
-		    "filesystem>\n"));
+		return (gettext("\tmount\n"
+		    "\tmount [-flvO] [-o opts] <-a | filesystem>\n"));
 	case HELP_PROMOTE:
 		return (gettext("\tpromote <clone-filesystem>\n"));
 	case HELP_RECEIVE:
@ -427,7 +419,7 @@ get_usage(zfs_help_t idx)
 		    "\t    <filesystem|volume>\n"
 		    "\tchange-key -i [-l] <filesystem|volume>\n"));
 	case HELP_VERSION:
-		return (gettext("\tversion [-j]\n"));
+		return (gettext("\tversion\n"));
 	case HELP_REDACT:
 		return (gettext("\tredact <snapshot> <bookmark> "
 		    "<redaction_snapshot> ...\n"));
@ -1892,89 +1884,7 @@ is_recvd_column(zprop_get_cbdata_t *cbp)
 }

 /*
- * Generates an nvlist with output version for every command based on params.
- * Purpose of this is to add a version of JSON output, considering the schema
- * format might be updated for each command in future.
- *
- * Schema:
- *
- * "output_version": {
- *    "command": string,
- *    "vers_major": integer,
- *    "vers_minor": integer,
- *  }
- */
-static nvlist_t *
-zfs_json_schema(int maj_v, int min_v)
-{
-	nvlist_t *sch = NULL;
-	nvlist_t *ov = NULL;
-	char cmd[MAX_CMD_LEN];
-	snprintf(cmd, MAX_CMD_LEN, "zfs %s", current_command->name);
-
-	sch = fnvlist_alloc();
-	ov = fnvlist_alloc();
-	fnvlist_add_string(ov, "command", cmd);
-	fnvlist_add_uint32(ov, "vers_major", maj_v);
-	fnvlist_add_uint32(ov, "vers_minor", min_v);
-	fnvlist_add_nvlist(sch, "output_version", ov);
-	fnvlist_free(ov);
-	return (sch);
-}
-
-static void
-fill_dataset_info(nvlist_t *list, zfs_handle_t *zhp, boolean_t as_int)
-{
-	char createtxg[ZFS_MAXPROPLEN];
-	zfs_type_t type = zfs_get_type(zhp);
-	nvlist_add_string(list, "name", zfs_get_name(zhp));
-
-	switch (type) {
-	case ZFS_TYPE_FILESYSTEM:
-		fnvlist_add_string(list, "type", "FILESYSTEM");
-		break;
-	case ZFS_TYPE_VOLUME:
-		fnvlist_add_string(list, "type", "VOLUME");
-		break;
-	case ZFS_TYPE_SNAPSHOT:
-		fnvlist_add_string(list, "type", "SNAPSHOT");
-		break;
-	case ZFS_TYPE_POOL:
-		fnvlist_add_string(list, "type", "POOL");
-		break;
-	case ZFS_TYPE_BOOKMARK:
-		fnvlist_add_string(list, "type", "BOOKMARK");
-		break;
-	default:
-		fnvlist_add_string(list, "type", "UNKNOWN");
-		break;
-	}
-
-	if (type != ZFS_TYPE_POOL)
-		fnvlist_add_string(list, "pool", zfs_get_pool_name(zhp));
-
-	if (as_int) {
-		fnvlist_add_uint64(list, "createtxg", zfs_prop_get_int(zhp,
-		    ZFS_PROP_CREATETXG));
-	} else {
-		if (zfs_prop_get(zhp, ZFS_PROP_CREATETXG, createtxg,
-		    sizeof (createtxg), NULL, NULL, 0, B_TRUE) == 0)
-			fnvlist_add_string(list, "createtxg", createtxg);
-	}
-
-	if (type == ZFS_TYPE_SNAPSHOT) {
-		char *ds, *snap;
-		ds = snap = strdup(zfs_get_name(zhp));
-		ds = strsep(&snap, "@");
-		fnvlist_add_string(list, "dataset", ds);
-		fnvlist_add_string(list, "snapshot_name", snap);
-		free(ds);
-	}
-}
-
-/*
- * zfs get [-rHp] [-j [--json-int]] [-o all | field[,field]...]
- *		[-s source[,source]...]
+ * zfs get [-rHp] [-o all | field[,field]...] [-s source[,source]...]
 *	< all | property[,property]... > < fs | snap | vol > ...
 *
 *	-r	recurse over any child datasets
@ -1987,8 +1897,6 @@ fill_dataset_info(nvlist_t *list, zfs_handle_t *zhp, boolean_t as_int)
 *		"local,default,inherited,received,temporary,none".  Default is
 *		all six.
 *	-p	Display values in parsable (literal) format.
- *	-j	Display output in JSON format.
- *	--json-int	Display numbers as integers instead of strings.
 *
 *  Prints properties for the given datasets.  The user can control which
 *  columns to display as well as which property types to allow.
@ -2008,21 +1916,9 @@ get_callback(zfs_handle_t *zhp, void *data)
 	nvlist_t *user_props = zfs_get_user_props(zhp);
 	zprop_list_t *pl = cbp->cb_proplist;
 	nvlist_t *propval;
-	nvlist_t *item, *d, *props;
-	item = d = props = NULL;
 	const char *strval;
 	const char *sourceval;
 	boolean_t received = is_recvd_column(cbp);
-	int err = 0;
-
-	if (cbp->cb_json) {
-		d = fnvlist_lookup_nvlist(cbp->cb_jsobj, "datasets");
-		if (d == NULL) {
-			fprintf(stderr, "datasets obj not found.\n");
-			exit(1);
-		}
-		props = fnvlist_alloc();
-	}

 	for (; pl != NULL; pl = pl->pl_next) {
 		char *recvdval = NULL;
@ -2057,9 +1953,9 @@ get_callback(zfs_handle_t *zhp, void *data)
 			    cbp->cb_literal) == 0))
 				recvdval = rbuf;

-			err = zprop_collect_property(zfs_get_name(zhp), cbp,
+			zprop_print_one_property(zfs_get_name(zhp), cbp,
 			    zfs_prop_to_name(pl->pl_prop),
-			    buf, sourcetype, source, recvdval, props);
+			    buf, sourcetype, source, recvdval);
 		} else if (zfs_prop_userquota(pl->pl_user_prop)) {
 			sourcetype = ZPROP_SRC_LOCAL;

@ -2069,9 +1965,8 @@ get_callback(zfs_handle_t *zhp, void *data)
 				(void) strlcpy(buf, "-", sizeof (buf));
 			}

-			err = zprop_collect_property(zfs_get_name(zhp), cbp,
-			    pl->pl_user_prop, buf, sourcetype, source, NULL,
-			    props);
+			zprop_print_one_property(zfs_get_name(zhp), cbp,
+			    pl->pl_user_prop, buf, sourcetype, source, NULL);
 		} else if (zfs_prop_written(pl->pl_user_prop)) {
 			sourcetype = ZPROP_SRC_LOCAL;

@ -2081,9 +1976,8 @@ get_callback(zfs_handle_t *zhp, void *data)
 				(void) strlcpy(buf, "-", sizeof (buf));
 			}

-			err = zprop_collect_property(zfs_get_name(zhp), cbp,
-			    pl->pl_user_prop, buf, sourcetype, source, NULL,
-			    props);
+			zprop_print_one_property(zfs_get_name(zhp), cbp,
+			    pl->pl_user_prop, buf, sourcetype, source, NULL);
 		} else {
 			if (nvlist_lookup_nvlist(user_props,
 			    pl->pl_user_prop, &propval) != 0) {
@ -2115,24 +2009,9 @@ get_callback(zfs_handle_t *zhp, void *data)
 			    cbp->cb_literal) == 0))
 				recvdval = rbuf;

-			err = zprop_collect_property(zfs_get_name(zhp), cbp,
+			zprop_print_one_property(zfs_get_name(zhp), cbp,
 			    pl->pl_user_prop, strval, sourcetype,
-			    source, recvdval, props);
-		}
-		if (err != 0)
-			return (err);
-	}
-
-	if (cbp->cb_json) {
-		if (!nvlist_empty(props)) {
-			item = fnvlist_alloc();
-			fill_dataset_info(item, zhp, cbp->cb_json_as_int);
-			fnvlist_add_nvlist(item, "properties", props);
-			fnvlist_add_nvlist(d, zfs_get_name(zhp), item);
-			fnvlist_free(props);
-			fnvlist_free(item);
-		} else {
-			fnvlist_free(props);
+			    source, recvdval);
 		}
 	}

@ -2149,7 +2028,6 @@ zfs_do_get(int argc, char **argv)
 	int ret = 0;
 	int limit = 0;
 	zprop_list_t fake_name = { 0 };
-	nvlist_t *data;

 	/*
 	 * Set up default columns and sources.
@ -2161,14 +2039,8 @@ zfs_do_get(int argc, char **argv)
 	cb.cb_columns[3] = GET_COL_SOURCE;
 	cb.cb_type = ZFS_TYPE_DATASET;

-	struct option long_options[] = {
-		{"json-int", no_argument, NULL, ZFS_OPTION_JSON_NUMS_AS_INT},
-		{0, 0, 0, 0}
-	};
-
 	/* check options */
-	while ((c = getopt_long(argc, argv, ":d:o:s:jrt:Hp", long_options,
-	    NULL)) != -1) {
+	while ((c = getopt(argc, argv, ":d:o:s:rt:Hp")) != -1) {
 		switch (c) {
 		case 'p':
 			cb.cb_literal = B_TRUE;
@ -2182,17 +2054,6 @@ zfs_do_get(int argc, char **argv)
 		case 'H':
 			cb.cb_scripted = B_TRUE;
 			break;
-		case 'j':
-			cb.cb_json = B_TRUE;
-			cb.cb_jsobj = zfs_json_schema(0, 1);
-			data = fnvlist_alloc();
-			fnvlist_add_nvlist(cb.cb_jsobj, "datasets", data);
-			fnvlist_free(data);
-			break;
-		case ZFS_OPTION_JSON_NUMS_AS_INT:
-			cb.cb_json_as_int = B_TRUE;
-			cb.cb_literal = B_TRUE;
-			break;
 		case ':':
 			(void) fprintf(stderr, gettext("missing argument for "
 			    "'%c' option\n"), optopt);
@ -2284,25 +2145,15 @@ found2:;

 			for (char *tok; (tok = strsep(&optarg, ",")); ) {
 				static const char *const type_opts[] = {
-					"filesystem",
-					"fs",
-					"volume",
-					"vol",
-					"snapshot",
-					"snap",
+					"filesystem", "volume",
+					"snapshot", "snap",
 					"bookmark",
-					"all"
-				};
+					"all" };
 				static const int type_types[] = {
-					ZFS_TYPE_FILESYSTEM,
-					ZFS_TYPE_FILESYSTEM,
-					ZFS_TYPE_VOLUME,
-					ZFS_TYPE_VOLUME,
-					ZFS_TYPE_SNAPSHOT,
-					ZFS_TYPE_SNAPSHOT,
+					ZFS_TYPE_FILESYSTEM, ZFS_TYPE_VOLUME,
+					ZFS_TYPE_SNAPSHOT, ZFS_TYPE_SNAPSHOT,
 					ZFS_TYPE_BOOKMARK,
-					ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK
-				};
+					ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK };

 				for (i = 0; i < ARRAY_SIZE(type_opts); ++i)
 					if (strcmp(tok, type_opts[i]) == 0) {
@ -2316,6 +2167,7 @@ found2:;
 found3:;
 			}
 			break;
+
 		case '?':
 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
 			    optopt);
@ -2332,12 +2184,6 @@ found3:;
 		usage(B_FALSE);
 	}

-	if (!cb.cb_json && cb.cb_json_as_int) {
-		(void) fprintf(stderr, gettext("'--json-int' only works with"
-		    " '-j' option\n"));
-		usage(B_FALSE);
-	}
-
 	fields = argv[0];

 	/*
@ -2378,11 +2224,6 @@ found3:;
 	ret = zfs_for_each(argc, argv, flags, types, NULL,
 	    &cb.cb_proplist, limit, get_callback, &cb);

-	if (ret == 0 && cb.cb_json)
-		zcmd_print_json(cb.cb_jsobj);
-	else if (ret != 0 && cb.cb_json)
-		nvlist_free(cb.cb_jsobj);
-
 	if (cb.cb_proplist == &fake_name)
 		zprop_free_list(fake_name.pl_next);
 	else
@ -3590,9 +3431,6 @@ typedef struct list_cbdata {
 	boolean_t	cb_literal;
 	boolean_t	cb_scripted;
 	zprop_list_t	*cb_proplist;
-	boolean_t	cb_json;
-	nvlist_t	*cb_jsobj;
-	boolean_t	cb_json_as_int;
 } list_cbdata_t;

 /*
@ -3663,11 +3501,10 @@ zfs_list_avail_color(zfs_handle_t *zhp)

 /*
 * Given a dataset and a list of fields, print out all the properties according
- * to the described layout, or return an nvlist containing all the fields, later
- * to be printed out as JSON object.
+ * to the described layout.
 */
 static void
-collect_dataset(zfs_handle_t *zhp, list_cbdata_t *cb)
+print_dataset(zfs_handle_t *zhp, list_cbdata_t *cb)
 {
 	zprop_list_t *pl = cb->cb_proplist;
 	boolean_t first = B_TRUE;
@ -3676,23 +3513,9 @@ collect_dataset(zfs_handle_t *zhp, list_cbdata_t *cb)
 	nvlist_t *propval;
 	const char *propstr;
 	boolean_t right_justify;
-	nvlist_t *item, *d, *props;
-	item = d = props = NULL;
-	zprop_source_t sourcetype = ZPROP_SRC_NONE;
-	char source[ZFS_MAX_DATASET_NAME_LEN];
-	if (cb->cb_json) {
-		d = fnvlist_lookup_nvlist(cb->cb_jsobj, "datasets");
-		if (d == NULL) {
-			fprintf(stderr, "datasets obj not found.\n");
-			exit(1);
-		}
-		item = fnvlist_alloc();
-		props = fnvlist_alloc();
-		fill_dataset_info(item, zhp, cb->cb_json_as_int);
-	}

 	for (; pl != NULL; pl = pl->pl_next) {
-		if (!cb->cb_json && !first) {
+		if (!first) {
 			if (cb->cb_scripted)
 				(void) putchar('\t');
 			else
@ -3708,111 +3531,68 @@ collect_dataset(zfs_handle_t *zhp, list_cbdata_t *cb)
 			right_justify = zfs_prop_align_right(pl->pl_prop);
 		} else if (pl->pl_prop != ZPROP_USERPROP) {
 			if (zfs_prop_get(zhp, pl->pl_prop, property,
-			    sizeof (property), &sourcetype, source,
-			    sizeof (source), cb->cb_literal) != 0)
+			    sizeof (property), NULL, NULL, 0,
+			    cb->cb_literal) != 0)
 				propstr = "-";
 			else
 				propstr = property;
 			right_justify = zfs_prop_align_right(pl->pl_prop);
 		} else if (zfs_prop_userquota(pl->pl_user_prop)) {
-			sourcetype = ZPROP_SRC_LOCAL;
 			if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
-			    property, sizeof (property), cb->cb_literal) != 0) {
-				sourcetype = ZPROP_SRC_NONE;
+			    property, sizeof (property), cb->cb_literal) != 0)
 				propstr = "-";
-			} else {
+			else
 				propstr = property;
-			}
 			right_justify = B_TRUE;
 		} else if (zfs_prop_written(pl->pl_user_prop)) {
-			sourcetype = ZPROP_SRC_LOCAL;
 			if (zfs_prop_get_written(zhp, pl->pl_user_prop,
-			    property, sizeof (property), cb->cb_literal) != 0) {
-				sourcetype = ZPROP_SRC_NONE;
+			    property, sizeof (property), cb->cb_literal) != 0)
 				propstr = "-";
-			} else {
+			else
 				propstr = property;
-			}
 			right_justify = B_TRUE;
 		} else {
 			if (nvlist_lookup_nvlist(userprops,
-			    pl->pl_user_prop, &propval) != 0) {
+			    pl->pl_user_prop, &propval) != 0)
 				propstr = "-";
-			} else {
+			else
 				propstr = fnvlist_lookup_string(propval,
 				    ZPROP_VALUE);
-				strlcpy(source,
-				    fnvlist_lookup_string(propval,
-				    ZPROP_SOURCE), ZFS_MAX_DATASET_NAME_LEN);
-				if (strcmp(source,
-				    zfs_get_name(zhp)) == 0) {
-					sourcetype = ZPROP_SRC_LOCAL;
-				} else if (strcmp(source,
-				    ZPROP_SOURCE_VAL_RECVD) == 0) {
-					sourcetype = ZPROP_SRC_RECEIVED;
-				} else {
-					sourcetype = ZPROP_SRC_INHERITED;
-				}
-			}
 			right_justify = B_FALSE;
 		}

-		if (cb->cb_json) {
-			if (pl->pl_prop == ZFS_PROP_NAME)
-				continue;
-			if (zprop_nvlist_one_property(
-			    zfs_prop_to_name(pl->pl_prop), propstr,
-			    sourcetype, source, NULL, props,
-			    cb->cb_json_as_int) != 0)
-				nomem();
-		} else {
 		/*
-			 * zfs_list_avail_color() needs
-			 * ZFS_PROP_AVAILABLE + USED, so we need another
-			 * for() search for the USED part when no colors
-			 * wanted, we can skip the whole thing
+		 * zfs_list_avail_color() needs ZFS_PROP_AVAILABLE + USED
+		 * - so we need another for() search for the USED part
+		 * - when no colors wanted, we can skip the whole thing
 		 */
 		if (use_color() && pl->pl_prop == ZFS_PROP_AVAILABLE) {
 			zprop_list_t *pl2 = cb->cb_proplist;
 			for (; pl2 != NULL; pl2 = pl2->pl_next) {
 				if (pl2->pl_prop == ZFS_PROP_USED) {
-						color_start(
-						    zfs_list_avail_color(zhp));
-						/*
-						 * found it, no need for more
-						 * loops
-						 */
+					color_start(zfs_list_avail_color(zhp));
+					/* found it, no need for more loops */
 					break;
 				}
 			}
 		}

 		/*
-			 * If this is being called in scripted mode, or if
-			 * this is the last column and it is left-justified,
-			 * don't include a width format specifier.
+		 * If this is being called in scripted mode, or if this is the
+		 * last column and it is left-justified, don't include a width
+		 * format specifier.
 		 */
-			if (cb->cb_scripted || (pl->pl_next == NULL &&
-			    !right_justify))
+		if (cb->cb_scripted || (pl->pl_next == NULL && !right_justify))
 			(void) fputs(propstr, stdout);
-			else if (right_justify) {
-				(void) printf("%*s", (int)pl->pl_width,
-				    propstr);
-			} else {
-				(void) printf("%-*s", (int)pl->pl_width,
-				    propstr);
-			}
+		else if (right_justify)
+			(void) printf("%*s", (int)pl->pl_width, propstr);
+		else
+			(void) printf("%-*s", (int)pl->pl_width, propstr);

 		if (pl->pl_prop == ZFS_PROP_AVAILABLE)
 			color_end();
 	}
-	}
-	if (cb->cb_json) {
-		fnvlist_add_nvlist(item, "properties", props);
-		fnvlist_add_nvlist(d, zfs_get_name(zhp), item);
-		fnvlist_free(props);
-		fnvlist_free(item);
-	} else
+
 	(void) putchar('\n');
 }

@ -3825,12 +3605,12 @@ list_callback(zfs_handle_t *zhp, void *data)
 	list_cbdata_t *cbp = data;

 	if (cbp->cb_first) {
-		if (!cbp->cb_scripted && !cbp->cb_json)
+		if (!cbp->cb_scripted)
 			print_header(cbp);
 		cbp->cb_first = B_FALSE;
 	}

-	collect_dataset(zhp, cbp);
+	print_dataset(zhp, cbp);

 	return (0);
 }
@ -3849,16 +3629,9 @@ zfs_do_list(int argc, char **argv)
 	int ret = 0;
 	zfs_sort_column_t *sortcol = NULL;
 	int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
-	nvlist_t *data = NULL;
-
-	struct option long_options[] = {
-		{"json-int", no_argument, NULL, ZFS_OPTION_JSON_NUMS_AS_INT},
-		{0, 0, 0, 0}
-	};

 	/* check options */
-	while ((c = getopt_long(argc, argv, "jHS:d:o:prs:t:", long_options,
-	    NULL)) != -1) {
+	while ((c = getopt(argc, argv, "HS:d:o:prs:t:")) != -1) {
 		switch (c) {
 		case 'o':
 			fields = optarg;
@ -3873,17 +3646,6 @@ zfs_do_list(int argc, char **argv)
 		case 'r':
 			flags |= ZFS_ITER_RECURSE;
 			break;
-		case 'j':
-			cb.cb_json = B_TRUE;
-			cb.cb_jsobj = zfs_json_schema(0, 1);
-			data = fnvlist_alloc();
-			fnvlist_add_nvlist(cb.cb_jsobj, "datasets", data);
-			fnvlist_free(data);
-			break;
-		case ZFS_OPTION_JSON_NUMS_AS_INT:
-			cb.cb_json_as_int = B_TRUE;
-			cb.cb_literal = B_TRUE;
-			break;
 		case 'H':
 			cb.cb_scripted = B_TRUE;
 			break;
@ -3910,25 +3672,15 @@ zfs_do_list(int argc, char **argv)

 			for (char *tok; (tok = strsep(&optarg, ",")); ) {
 				static const char *const type_subopts[] = {
-					"filesystem",
-					"fs",
-					"volume",
-					"vol",
-					"snapshot",
-					"snap",
+					"filesystem", "volume",
+					"snapshot", "snap",
 					"bookmark",
-					"all"
-				};
+					"all" };
 				static const int type_types[] = {
-					ZFS_TYPE_FILESYSTEM,
-					ZFS_TYPE_FILESYSTEM,
-					ZFS_TYPE_VOLUME,
-					ZFS_TYPE_VOLUME,
-					ZFS_TYPE_SNAPSHOT,
-					ZFS_TYPE_SNAPSHOT,
+					ZFS_TYPE_FILESYSTEM, ZFS_TYPE_VOLUME,
+					ZFS_TYPE_SNAPSHOT, ZFS_TYPE_SNAPSHOT,
 					ZFS_TYPE_BOOKMARK,
-					ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK
-				};
+					ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK };

 				for (c = 0; c < ARRAY_SIZE(type_subopts); ++c)
 					if (strcmp(tok, type_subopts[c]) == 0) {
@ -3957,12 +3709,6 @@ found3:;
 	argc -= optind;
 	argv += optind;

-	if (!cb.cb_json && cb.cb_json_as_int) {
-		(void) fprintf(stderr, gettext("'--json-int' only works with"
-		    " '-j' option\n"));
-		usage(B_FALSE);
-	}
-
 	/*
 	 * If "-o space" and no types were specified, don't display snapshots.
 	 */
@ -4002,11 +3748,6 @@ found3:;
 	ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
 	    limit, list_callback, &cb);

-	if (ret == 0 && cb.cb_json)
-		zcmd_print_json(cb.cb_jsobj);
-	else if (ret != 0 && cb.cb_json)
-		nvlist_free(cb.cb_jsobj);
-
 	zprop_free_list(cb.cb_proplist);
 	zfs_free_sort_columns(sortcol);

@ -7003,8 +6744,6 @@ zfs_do_holds(int argc, char **argv)
 #define	MOUNT_TIME 1		/* seconds */

 typedef struct get_all_state {
-	char		**ga_datasets;
-	int		ga_count;
 	boolean_t	ga_verbose;
 	get_all_cb_t	*ga_cbp;
 } get_all_state_t;
@ -7051,35 +6790,19 @@ get_one_dataset(zfs_handle_t *zhp, void *data)
 	return (0);
 }

-static int
-get_recursive_datasets(zfs_handle_t *zhp, void *data)
-{
-	get_all_state_t *state = data;
-	int len = strlen(zfs_get_name(zhp));
-	for (int i = 0; i < state->ga_count; ++i) {
-		if (strcmp(state->ga_datasets[i], zfs_get_name(zhp)) == 0)
-			return (get_one_dataset(zhp, data));
-		else if ((strncmp(state->ga_datasets[i], zfs_get_name(zhp),
-		    len) == 0) && state->ga_datasets[i][len] == '/') {
-			(void) zfs_iter_filesystems_v2(zhp, 0,
-			    get_recursive_datasets, data);
-		}
-	}
-	zfs_close(zhp);
-	return (0);
-}
-
 static void
-get_all_datasets(get_all_state_t *state)
+get_all_datasets(get_all_cb_t *cbp, boolean_t verbose)
 {
-	if (state->ga_verbose)
-		set_progress_header(gettext("Reading ZFS config"));
-	if (state->ga_datasets == NULL)
-		(void) zfs_iter_root(g_zfs, get_one_dataset, state);
-	else
-		(void) zfs_iter_root(g_zfs, get_recursive_datasets, state);
+	get_all_state_t state = {
+	    .ga_verbose = verbose,
+	    .ga_cbp = cbp
+	};

-	if (state->ga_verbose)
+	if (verbose)
+		set_progress_header(gettext("Reading ZFS config"));
+	(void) zfs_iter_root(g_zfs, get_one_dataset, &state);
+
+	if (verbose)
 		finish_progress(gettext("done."));
 }

@ -7425,38 +7148,24 @@ static int
 share_mount(int op, int argc, char **argv)
 {
 	int do_all = 0;
-	int recursive = 0;
 	boolean_t verbose = B_FALSE;
-	boolean_t json = B_FALSE;
 	int c, ret = 0;
 	char *options = NULL;
 	int flags = 0;
-	nvlist_t *jsobj, *data, *item;
-	const uint_t mount_nthr = 512;
-	uint_t nthr;
-	jsobj = data = item = NULL;

 	/* check options */
-	while ((c = getopt(argc, argv, op == OP_MOUNT ? ":ajRlvo:Of" : "al"))
+	while ((c = getopt(argc, argv, op == OP_MOUNT ? ":alvo:Of" : "al"))
 	    != -1) {
 		switch (c) {
 		case 'a':
 			do_all = 1;
 			break;
-		case 'R':
-			recursive = 1;
-			break;
 		case 'v':
 			verbose = B_TRUE;
 			break;
 		case 'l':
 			flags |= MS_CRYPT;
 			break;
-		case 'j':
-			json = B_TRUE;
-			jsobj = zfs_json_schema(0, 1);
-			data = fnvlist_alloc();
-			break;
 		case 'o':
 			if (*optarg == '\0') {
 				(void) fprintf(stderr, gettext("empty mount "
@ -7491,13 +7200,8 @@ share_mount(int op, int argc, char **argv)
 	argc -= optind;
 	argv += optind;

-	if (json && argc != 0) {
-		(void) fprintf(stderr, gettext("too many arguments\n"));
-		usage(B_FALSE);
-	}
-
 	/* check number of arguments */
-	if (do_all || recursive) {
+	if (do_all) {
 		enum sa_protocol protocol = SA_NO_PROTOCOL;

 		if (op == OP_SHARE && argc > 0) {
@ -7506,38 +7210,14 @@ share_mount(int op, int argc, char **argv)
 			argv++;
 		}

-		if (argc != 0 && do_all) {
+		if (argc != 0) {
 			(void) fprintf(stderr, gettext("too many arguments\n"));
 			usage(B_FALSE);
 		}

-		if (argc == 0 && recursive) {
-			(void) fprintf(stderr,
-			    gettext("no dataset provided\n"));
-			usage(B_FALSE);
-		}
-
 		start_progress_timer();
 		get_all_cb_t cb = { 0 };
-		get_all_state_t state = { 0 };
-		if (argc == 0) {
-			state.ga_datasets = NULL;
-			state.ga_count = -1;
-		} else {
-			zfs_handle_t *zhp;
-			for (int i = 0; i < argc; i++) {
-				zhp = zfs_open(g_zfs, argv[i],
-				    ZFS_TYPE_FILESYSTEM);
-				if (zhp == NULL)
-					usage(B_FALSE);
-				zfs_close(zhp);
-			}
-			state.ga_datasets = argv;
-			state.ga_count = argc;
-		}
-		state.ga_verbose = verbose;
-		state.ga_cbp = &cb;
-		get_all_datasets(&state);
+		get_all_datasets(&cb, verbose);

 		if (cb.cb_used == 0) {
 			free(options);
@ -7554,7 +7234,6 @@ share_mount(int op, int argc, char **argv)
 		pthread_mutex_init(&share_mount_state.sm_lock, NULL);

 		/* For a 'zfs share -a' operation start with a clean slate. */
-		if (op == OP_SHARE)
 		zfs_truncate_shares(NULL);

 		/*
@ -7563,9 +7242,9 @@ share_mount(int op, int argc, char **argv)
 		 * be serialized so that we can prompt the user for their keys
 		 * in a consistent manner.
 		 */
-		nthr = op == OP_MOUNT && !(flags & MS_CRYPT) ? mount_nthr : 1;
 		zfs_foreach_mountpoint(g_zfs, cb.cb_handles, cb.cb_used,
-		    share_mount_one_cb, &share_mount_state, nthr);
+		    share_mount_one_cb, &share_mount_state,
+		    op == OP_MOUNT && !(flags & MS_CRYPT));
 		zfs_commit_shares(NULL);

 		ret = share_mount_state.sm_status;
@ -7599,30 +7278,12 @@ share_mount(int op, int argc, char **argv)
 			if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 ||
 			    strchr(entry.mnt_special, '@') != NULL)
 				continue;
-			if (json) {
-				item = fnvlist_alloc();
-				fnvlist_add_string(item, "filesystem",
-				    entry.mnt_special);
-				fnvlist_add_string(item, "mountpoint",
-				    entry.mnt_mountp);
-				fnvlist_add_nvlist(data, entry.mnt_special,
-				    item);
-				fnvlist_free(item);
-			} else {
+
 			(void) printf("%-30s  %s\n", entry.mnt_special,
 			    entry.mnt_mountp);
 		}
-		}

 		(void) fclose(mnttab);
-		if (json) {
-			fnvlist_add_nvlist(jsobj, "datasets", data);
-			if (nvlist_empty(data))
-				fnvlist_free(jsobj);
-			else
-				zcmd_print_json(jsobj);
-			fnvlist_free(data);
-		}
 	} else {
 		zfs_handle_t *zhp;

@ -9080,38 +8741,7 @@ found:;
 static int
 zfs_do_version(int argc, char **argv)
 {
-	int c;
-	nvlist_t *jsobj = NULL, *zfs_ver = NULL;
-	boolean_t json = B_FALSE;
-	while ((c = getopt(argc, argv, "j")) != -1) {
-		switch (c) {
-		case 'j':
-			json = B_TRUE;
-			jsobj = zfs_json_schema(0, 1);
-			break;
-		case '?':
-			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
-			    optopt);
-			usage(B_FALSE);
-		}
-	}
-
-	argc -= optind;
-	if (argc != 0) {
-		(void) fprintf(stderr, "too many arguments\n");
-		usage(B_FALSE);
-	}
-
-	if (json) {
-		zfs_ver = zfs_version_nvlist();
-		if (zfs_ver) {
-			fnvlist_add_nvlist(jsobj, "zfs_version", zfs_ver);
-			zcmd_print_json(jsobj);
-			fnvlist_free(zfs_ver);
-			return (0);
-		} else
-			return (-1);
-	} else
+	(void) argc, (void) argv;
 	return (zfs_version_print() != 0);
 }

--- a/cmd/zhack.c
+++ b/cmd/zhack.c
@ -612,8 +612,8 @@ zhack_repair_undetach(uberblock_t *ub, nvlist_t *cfg, const int l)
 	 * Uberblock root block pointer has valid birth TXG.
 	 * Copying it to the label NVlist
 	 */
-	if (BP_GET_LOGICAL_BIRTH(&ub->ub_rootbp) != 0) {
-		const uint64_t txg = BP_GET_LOGICAL_BIRTH(&ub->ub_rootbp);
+	if (ub->ub_rootbp.blk_birth != 0) {
+		const uint64_t txg = ub->ub_rootbp.blk_birth;
 		ub->ub_txg = txg;

 		if (nvlist_remove_all(cfg, ZPOOL_CONFIG_CREATE_TXG) != 0) {
--- a/cmd/zilstat.in
+++ b/cmd/zilstat.in
@ -43,9 +43,6 @@ cols = {
 	"obj":       [12,        -1,         "objset"],
 	"cc":        [5,         1000,       "zil_commit_count"],
 	"cwc":       [5,         1000,       "zil_commit_writer_count"],
-	"cec":       [5,         1000,       "zil_commit_error_count"],
-	"csc":       [5,         1000,       "zil_commit_stall_count"],
-	"cSc":       [5,         1000,       "zil_commit_suspend_count"],
 	"ic":        [5,         1000,       "zil_itx_count"],
 	"iic":       [5,         1000,       "zil_itx_indirect_count"],
 	"iib":       [5,         1024,       "zil_itx_indirect_bytes"],
--- a/cmd/zinject/zinject.c
+++ b/cmd/zinject/zinject.c
@ -22,7 +22,6 @@
 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
 * Copyright (c) 2012, 2015 by Delphix. All rights reserved.
 * Copyright (c) 2017, Intel Corporation.
- * Copyright (c) 2023-2024, Klara Inc.
 */

 /*
@ -209,38 +208,6 @@ type_to_name(uint64_t type)
 	}
 }

-struct errstr {
-	int		err;
-	const char	*str;
-};
-static const struct errstr errstrtable[] = {
-	{ EIO,		"io" },
-	{ ECKSUM,	"checksum" },
-	{ EINVAL,	"decompress" },
-	{ EACCES,	"decrypt" },
-	{ ENXIO,	"nxio" },
-	{ ECHILD,	"dtl" },
-	{ EILSEQ,	"corrupt" },
-	{ ENOSYS,	"noop" },
-	{ 0, NULL },
-};
-
-static int
-str_to_err(const char *str)
-{
-	for (int i = 0; errstrtable[i].str != NULL; i++)
-		if (strcasecmp(errstrtable[i].str, str) == 0)
-			return (errstrtable[i].err);
-	return (-1);
-}
-static const char *
-err_to_str(int err)
-{
-	for (int i = 0; errstrtable[i].str != NULL; i++)
-		if (errstrtable[i].err == err)
-			return (errstrtable[i].str);
-	return ("[unknown]");
-}

 /*
 * Print usage message.
@ -266,12 +233,12 @@ usage(void)
 	    "\t\tspa_vdev_exit() will trigger a panic.\n"
 	    "\n"
 	    "\tzinject -d device [-e errno] [-L <nvlist|uber|pad1|pad2>] [-F]\n"
-	    "\t\t[-T <read|write|free|claim|flush|all>] [-f frequency] pool\n\n"
+	    "\t\t[-T <read|write|free|claim|all>] [-f frequency] pool\n\n"
 	    "\t\tInject a fault into a particular device or the device's\n"
 	    "\t\tlabel.  Label injection can either be 'nvlist', 'uber',\n "
 	    "\t\t'pad1', or 'pad2'.\n"
-	    "\t\t'errno' can be 'nxio' (the default), 'io', 'dtl',\n"
-	    "\t\t'corrupt' (bit flip), or 'noop' (successfully do nothing).\n"
+	    "\t\t'errno' can be 'nxio' (the default), 'io', 'dtl', or\n"
+	    "\t\t'corrupt' (bit flip).\n"
 	    "\t\t'frequency' is a value between 0.0001 and 100.0 that limits\n"
 	    "\t\tdevice error injection to a percentage of the IOs.\n"
 	    "\n"
@ -310,11 +277,6 @@ usage(void)
 	    "\t\tcreate 3 lanes on the device; one lane with a latency\n"
 	    "\t\tof 10 ms and two lanes with a 25 ms latency.\n"
 	    "\n"
-	    "\tzinject -P import|export -s <seconds> pool\n"
-	    "\t\tAdd an artificial delay to a future pool import or export,\n"
-	    "\t\tsuch that the operation takes a minimum of supplied seconds\n"
-	    "\t\tto complete.\n"
-	    "\n"
 	    "\tzinject -I [-s <seconds> | -g <txgs>] pool\n"
 	    "\t\tCause the pool to stop writing blocks yet not\n"
 	    "\t\treport errors for a duration.  Simulates buggy hardware\n"
@ -397,10 +359,8 @@ print_data_handler(int id, const char *pool, zinject_record_t *record,
 {
 	int *count = data;

-	if (record->zi_guid != 0 || record->zi_func[0] != '\0' ||
-	    record->zi_duration != 0) {
+	if (record->zi_guid != 0 || record->zi_func[0] != '\0')
 		return (0);
-	}

 	if (*count == 0) {
 		(void) printf("%3s  %-15s  %-6s  %-6s  %-8s  %3s  %-4s  "
@ -432,10 +392,6 @@ static int
 print_device_handler(int id, const char *pool, zinject_record_t *record,
    void *data)
 {
-	static const char *iotypestr[] = {
-	    "null", "read", "write", "free", "claim", "flush", "trim", "all",
-	};
-
 	int *count = data;

 	if (record->zi_guid == 0 || record->zi_func[0] != '\0')
@ -445,21 +401,14 @@ print_device_handler(int id, const char *pool, zinject_record_t *record,
 		return (0);

 	if (*count == 0) {
-		(void) printf("%3s  %-15s  %-16s  %-5s  %-10s  %-9s\n",
-		    "ID", "POOL", "GUID", "TYPE", "ERROR", "FREQ");
-		(void) printf(
-		    "---  ---------------  ----------------  "
-		    "-----  ----------  ---------\n");
+		(void) printf("%3s  %-15s  %s\n", "ID", "POOL", "GUID");
+		(void) printf("---  ---------------  ----------------\n");
 	}

 	*count += 1;

-	double freq = record->zi_freq == 0 ? 100.0f :
-	    (((double)record->zi_freq) / ZI_PERCENTAGE_MAX) * 100.0f;
-
-	(void) printf("%3d  %-15s  %llx  %-5s  %-10s  %8.4f%%\n", id, pool,
-	    (u_longlong_t)record->zi_guid, iotypestr[record->zi_iotype],
-	    err_to_str(record->zi_error), freq);
+	(void) printf("%3d  %-15s  %llx\n", id, pool,
+	    (u_longlong_t)record->zi_guid);

 	return (0);
 }
@ -514,33 +463,6 @@ print_panic_handler(int id, const char *pool, zinject_record_t *record,
 	return (0);
 }

-static int
-print_pool_delay_handler(int id, const char *pool, zinject_record_t *record,
-    void *data)
-{
-	int *count = data;
-
-	if (record->zi_cmd != ZINJECT_DELAY_IMPORT &&
-	    record->zi_cmd != ZINJECT_DELAY_EXPORT) {
-		return (0);
-	}
-
-	if (*count == 0) {
-		(void) printf("%3s  %-19s  %-11s  %s\n",
-		    "ID", "POOL", "DELAY (sec)", "COMMAND");
-		(void) printf("---  -------------------  -----------"
-		    "  -------\n");
-	}
-
-	*count += 1;
-
-	(void) printf("%3d  %-19s  %-11llu  %s\n",
-	    id, pool, (u_longlong_t)record->zi_duration,
-	    record->zi_cmd == ZINJECT_DELAY_IMPORT ? "import": "export");
-
-	return (0);
-}
-
 /*
 * Print all registered error handlers.  Returns the number of handlers
 * registered.
@ -571,13 +493,6 @@ print_all_handlers(void)
 		count = 0;
 	}

-	(void) iter_handlers(print_pool_delay_handler, &count);
-	if (count > 0) {
-		total += count;
-		(void) printf("\n");
-		count = 0;
-	}
-
 	(void) iter_handlers(print_panic_handler, &count);

 	return (count + total);
@ -650,27 +565,9 @@ register_handler(const char *pool, int flags, zinject_record_t *record,
 	zc.zc_guid = flags;

 	if (zfs_ioctl(g_zfs, ZFS_IOC_INJECT_FAULT, &zc) != 0) {
-		const char *errmsg = strerror(errno);
-
-		switch (errno) {
-		case EDOM:
-			errmsg = "block level exceeds max level of object";
-			break;
-		case EEXIST:
-			if (record->zi_cmd == ZINJECT_DELAY_IMPORT)
-				errmsg = "pool already imported";
-			if (record->zi_cmd == ZINJECT_DELAY_EXPORT)
-				errmsg = "a handler already exists";
-			break;
-		case ENOENT:
-			/* import delay injector running on older zfs module */
-			if (record->zi_cmd == ZINJECT_DELAY_IMPORT)
-				errmsg = "import delay injector not supported";
-			break;
-		default:
-			break;
-		}
-		(void) fprintf(stderr, "failed to add handler: %s\n", errmsg);
+		(void) fprintf(stderr, "failed to add handler: %s\n",
+		    errno == EDOM ? "block level exceeds max level of object" :
+		    strerror(errno));
 		return (1);
 	}

@ -695,9 +592,6 @@ register_handler(const char *pool, int flags, zinject_record_t *record,
 		} else if (record->zi_duration < 0) {
 			(void) printf(" txgs: %lld \n",
 			    (u_longlong_t)-record->zi_duration);
-		} else if (record->zi_timer > 0) {
-			(void) printf(" timer: %lld ms\n",
-			    (u_longlong_t)NSEC2MSEC(record->zi_timer));
 		} else {
 			(void) printf("objset: %llu\n",
 			    (u_longlong_t)record->zi_objset);
@ -896,7 +790,7 @@ main(int argc, char **argv)
 	}

 	while ((c = getopt(argc, argv,
-	    ":aA:b:C:d:D:f:Fg:qhIc:t:T:l:mr:s:e:uL:p:P:")) != -1) {
+	    ":aA:b:C:d:D:f:Fg:qhIc:t:T:l:mr:s:e:uL:p:")) != -1) {
 		switch (c) {
 		case 'a':
 			flags |= ZINJECT_FLUSH_ARC;
@ -948,12 +842,24 @@ main(int argc, char **argv)
 			}
 			break;
 		case 'e':
-			error = str_to_err(optarg);
-			if (error < 0) {
+			if (strcasecmp(optarg, "io") == 0) {
+				error = EIO;
+			} else if (strcasecmp(optarg, "checksum") == 0) {
+				error = ECKSUM;
+			} else if (strcasecmp(optarg, "decompress") == 0) {
+				error = EINVAL;
+			} else if (strcasecmp(optarg, "decrypt") == 0) {
+				error = EACCES;
+			} else if (strcasecmp(optarg, "nxio") == 0) {
+				error = ENXIO;
+			} else if (strcasecmp(optarg, "dtl") == 0) {
+				error = ECHILD;
+			} else if (strcasecmp(optarg, "corrupt") == 0) {
+				error = EILSEQ;
+			} else {
 				(void) fprintf(stderr, "invalid error type "
-				    "'%s': must be one of: io decompress "
-				    "decrypt nxio dtl corrupt noop\n",
-				    optarg);
+				    "'%s': must be 'io', 'checksum' or "
+				    "'nxio'\n", optarg);
 				usage();
 				libzfs_fini(g_zfs);
 				return (1);
@ -1014,19 +920,6 @@ main(int argc, char **argv)
 			    sizeof (record.zi_func));
 			record.zi_cmd = ZINJECT_PANIC;
 			break;
-		case 'P':
-			if (strcasecmp(optarg, "import") == 0) {
-				record.zi_cmd = ZINJECT_DELAY_IMPORT;
-			} else if (strcasecmp(optarg, "export") == 0) {
-				record.zi_cmd = ZINJECT_DELAY_EXPORT;
-			} else {
-				(void) fprintf(stderr, "invalid command '%s': "
-				    "must be 'import' or 'export'\n", optarg);
-				usage();
-				libzfs_fini(g_zfs);
-				return (1);
-			}
-			break;
 		case 'q':
 			quiet = 1;
 			break;
@ -1054,14 +947,12 @@ main(int argc, char **argv)
 				io_type = ZIO_TYPE_FREE;
 			} else if (strcasecmp(optarg, "claim") == 0) {
 				io_type = ZIO_TYPE_CLAIM;
-			} else if (strcasecmp(optarg, "flush") == 0) {
-				io_type = ZIO_TYPE_FLUSH;
 			} else if (strcasecmp(optarg, "all") == 0) {
 				io_type = ZIO_TYPES;
 			} else {
 				(void) fprintf(stderr, "invalid I/O type "
 				    "'%s': must be 'read', 'write', 'free', "
-				    "'claim', 'flush' or 'all'\n", optarg);
+				    "'claim' or 'all'\n", optarg);
 				usage();
 				libzfs_fini(g_zfs);
 				return (1);
@ -1108,7 +999,7 @@ main(int argc, char **argv)
 	argc -= optind;
 	argv += optind;

-	if (record.zi_duration != 0 && record.zi_cmd == 0)
+	if (record.zi_duration != 0)
 		record.zi_cmd = ZINJECT_IGNORED_WRITES;

 	if (cancel != NULL) {
@ -1192,22 +1083,6 @@ main(int argc, char **argv)
 			libzfs_fini(g_zfs);
 			return (1);
 		}
-
-		if (record.zi_nlanes) {
-			switch (io_type) {
-			case ZIO_TYPE_READ:
-			case ZIO_TYPE_WRITE:
-			case ZIO_TYPES:
-				break;
-			default:
-				(void) fprintf(stderr, "I/O type for a delay "
-				    "must be 'read' or 'write'\n");
-				usage();
-				libzfs_fini(g_zfs);
-				return (1);
-			}
-		}
-
 		if (!error)
 			error = ENXIO;

@ -1254,8 +1129,8 @@ main(int argc, char **argv)
 		if (raw != NULL || range != NULL || type != TYPE_INVAL ||
 		    level != 0 || device != NULL || record.zi_freq > 0 ||
 		    dvas != 0) {
-			(void) fprintf(stderr, "%s incompatible with other "
-			    "options\n", "import|export delay (-P)");
+			(void) fprintf(stderr, "panic (-p) incompatible with "
+			    "other options\n");
 			usage();
 			libzfs_fini(g_zfs);
 			return (2);
@ -1273,28 +1148,6 @@ main(int argc, char **argv)
 		if (argv[1] != NULL)
 			record.zi_type = atoi(argv[1]);
 		dataset[0] = '\0';
-	} else if (record.zi_cmd == ZINJECT_DELAY_IMPORT ||
-	    record.zi_cmd == ZINJECT_DELAY_EXPORT) {
-		if (raw != NULL || range != NULL || type != TYPE_INVAL ||
-		    level != 0 || device != NULL || record.zi_freq > 0 ||
-		    dvas != 0) {
-			(void) fprintf(stderr, "%s incompatible with other "
-			    "options\n", "import|export delay (-P)");
-			usage();
-			libzfs_fini(g_zfs);
-			return (2);
-		}
-
-		if (argc != 1 || record.zi_duration <= 0) {
-			(void) fprintf(stderr, "import|export delay (-P) "
-			    "injection requires a duration (-s) and a single "
-			    "pool name\n");
-			usage();
-			libzfs_fini(g_zfs);
-			return (2);
-		}
-
-		(void) strlcpy(pool, argv[0], sizeof (pool));
 	} else if (record.zi_cmd == ZINJECT_IGNORED_WRITES) {
 		if (raw != NULL || range != NULL || type != TYPE_INVAL ||
 		    level != 0 || record.zi_freq > 0 || dvas != 0) {
--- a/cmd/zpool/compatibility.d/grub2
+++ b/cmd/zpool/compatibility.d/grub2
@ -1,9 +1,6 @@
 # Features which are supported by GRUB2
-allocation_classes
 async_destroy
-block_cloning
 bookmarks
-device_rebuild
 embedded_data
 empty_bpobj
 enabled_txg
@ -12,12 +9,6 @@ filesystem_limits
 hole_birth
 large_blocks
 livelist
-log_spacemap
 lz4_compress
-project_quota
-resilver_defer
 spacemap_histogram
-spacemap_v2
-userobj_accounting
-zilsaxattr
 zpool_checkpoint
--- a/cmd/zpool/compatibility.d/openzfsonosx-1.8.1
+++ b/cmd/zpool/compatibility.d/openzfsonosx-1.8.1
@ -6,6 +6,7 @@ edonr
 embedded_data
 empty_bpobj
 enabled_txg
+encryption
 extensible_dataset
 filesystem_limits
 hole_birth
--- a/cmd/zpool/os/freebsd/zpool_vdev_os.c
+++ b/cmd/zpool/os/freebsd/zpool_vdev_os.c
@ -124,24 +124,3 @@ check_file(const char *file, boolean_t force, boolean_t isspare)
 {
 	return (check_file_generic(file, force, isspare));
 }
-
-int
-zpool_power_current_state(zpool_handle_t *zhp, char *vdev)
-{
-
-	(void) zhp;
-	(void) vdev;
-	/* Enclosure slot power not supported on FreeBSD yet */
-	return (-1);
-}
-
-int
-zpool_power(zpool_handle_t *zhp, char *vdev, boolean_t turn_on)
-{
-
-	(void) zhp;
-	(void) vdev;
-	(void) turn_on;
-	/* Enclosure slot power not supported on FreeBSD yet */
-	return (ENOTSUP);
-}
--- a/cmd/zpool/os/linux/zpool_vdev_os.c
+++ b/cmd/zpool/os/linux/zpool_vdev_os.c
@ -416,258 +416,3 @@ check_file(const char *file, boolean_t force, boolean_t isspare)
 {
 	return (check_file_generic(file, force, isspare));
 }
-
-/*
- * Read from a sysfs file and return an allocated string.  Removes
- * the newline from the end of the string if there is one.
- *
- * Returns a string on success (which must be freed), or NULL on error.
- */
-static char *zpool_sysfs_gets(char *path)
-{
-	int fd;
-	struct stat statbuf;
-	char *buf = NULL;
-	ssize_t count = 0;
-	fd = open(path, O_RDONLY);
-	if (fd < 0)
-		return (NULL);
-
-	if (fstat(fd, &statbuf) != 0) {
-		close(fd);
-		return (NULL);
-	}
-
-	buf = calloc(statbuf.st_size + 1, sizeof (*buf));
-	if (buf == NULL) {
-		close(fd);
-		return (NULL);
-	}
-
-	/*
-	 * Note, we can read less bytes than st_size, and that's ok.  Sysfs
-	 * files will report their size is 4k even if they only return a small
-	 * string.
-	 */
-	count = read(fd, buf, statbuf.st_size);
-	if (count < 0) {
-		/* Error doing read() or we overran the buffer */
-		close(fd);
-		free(buf);
-		return (NULL);
-	}
-
-	/* Remove trailing newline */
-	if (count > 0 && buf[count - 1] == '\n')
-		buf[count - 1] = 0;
-
-	close(fd);
-
-	return (buf);
-}
-
-/*
- * Write a string to a sysfs file.
- *
- * Returns 0 on success, non-zero otherwise.
- */
-static int zpool_sysfs_puts(char *path, char *str)
-{
-	FILE *file;
-
-	file = fopen(path, "w");
-	if (!file) {
-		return (-1);
-	}
-
-	if (fputs(str, file) < 0) {
-		fclose(file);
-		return (-2);
-	}
-	fclose(file);
-	return (0);
-}
-
-/* Given a vdev nvlist_t, rescan its enclosure sysfs path */
-static void
-rescan_vdev_config_dev_sysfs_path(nvlist_t *vdev_nv)
-{
-	update_vdev_config_dev_sysfs_path(vdev_nv,
-	    fnvlist_lookup_string(vdev_nv, ZPOOL_CONFIG_PATH),
-	    ZPOOL_CONFIG_VDEV_ENC_SYSFS_PATH);
-}
-
-/*
- * Given a power string: "on", "off", "1", or "0", return 0 if it's an
- * off value, 1 if it's an on value, and -1 if the value is unrecognized.
- */
-static int zpool_power_parse_value(char *str)
-{
-	if ((strcmp(str, "off") == 0) || (strcmp(str, "0") == 0))
-		return (0);
-
-	if ((strcmp(str, "on") == 0) || (strcmp(str, "1") == 0))
-		return (1);
-
-	return (-1);
-}
-
-/*
- * Given a vdev string return an allocated string containing the sysfs path to
- * its power control file.  Also do a check if the power control file really
- * exists and has correct permissions.
- *
- * Example returned strings:
- *
- * /sys/class/enclosure/0:0:122:0/10/power_status
- * /sys/bus/pci/slots/10/power
- *
- * Returns allocated string on success (which must be freed), NULL on failure.
- */
-static char *
-zpool_power_sysfs_path(zpool_handle_t *zhp, char *vdev)
-{
-	const char *enc_sysfs_dir = NULL;
-	char *path = NULL;
-	nvlist_t *vdev_nv = zpool_find_vdev(zhp, vdev, NULL, NULL, NULL);
-
-	if (vdev_nv == NULL) {
-		return (NULL);
-	}
-
-	/* Make sure we're getting the updated enclosure sysfs path */
-	rescan_vdev_config_dev_sysfs_path(vdev_nv);
-
-	if (nvlist_lookup_string(vdev_nv, ZPOOL_CONFIG_VDEV_ENC_SYSFS_PATH,
-	    &enc_sysfs_dir) != 0) {
-		return (NULL);
-	}
-
-	if (asprintf(&path, "%s/power_status", enc_sysfs_dir) == -1)
-		return (NULL);
-
-	if (access(path, W_OK) != 0) {
-		free(path);
-		path = NULL;
-		/* No HDD 'power_control' file, maybe it's NVMe? */
-		if (asprintf(&path, "%s/power", enc_sysfs_dir) == -1) {
-			return (NULL);
-		}
-
-		if (access(path, R_OK | W_OK) != 0) {
-			/* Not NVMe either */
-			free(path);
-			return (NULL);
-		}
-	}
-
-	return (path);
-}
-
-/*
- * Given a path to a sysfs power control file, return B_TRUE if you should use
- * "on/off" words to control it, or B_FALSE otherwise ("0/1" to control).
- */
-static boolean_t
-zpool_power_use_word(char *sysfs_path)
-{
-	if (strcmp(&sysfs_path[strlen(sysfs_path) - strlen("power_status")],
-	    "power_status") == 0) {
-		return (B_TRUE);
-	}
-	return (B_FALSE);
-}
-
-/*
- * Check the sysfs power control value for a vdev.
- *
- * Returns:
- *  0 - Power is off
- *  1 - Power is on
- * -1 - Error or unsupported
- */
-int
-zpool_power_current_state(zpool_handle_t *zhp, char *vdev)
-{
-	char *val;
-	int rc;
-
-	char *path = zpool_power_sysfs_path(zhp, vdev);
-	if (path == NULL)
-		return (-1);
-
-	val = zpool_sysfs_gets(path);
-	if (val == NULL) {
-		free(path);
-		return (-1);
-	}
-
-	rc = zpool_power_parse_value(val);
-	free(val);
-	free(path);
-	return (rc);
-}
-
-/*
- * Turn on or off the slot to a device
- *
- * Device path is the full path to the device (like /dev/sda or /dev/sda1).
- *
- * Return code:
- * 0:		Success
- * ENOTSUP:	Power control not supported for OS
- * EBADSLT:	Couldn't read current power state
- * ENOENT:	No sysfs path to power control
- * EIO:	Couldn't write sysfs power value
- * EBADE:	Sysfs power value didn't change
- */
-int
-zpool_power(zpool_handle_t *zhp, char *vdev, boolean_t turn_on)
-{
-	char *sysfs_path;
-	const char *val;
-	int rc;
-	int timeout_ms;
-
-	rc = zpool_power_current_state(zhp, vdev);
-	if (rc == -1) {
-		return (EBADSLT);
-	}
-
-	/* Already correct value? */
-	if (rc == (int)turn_on)
-		return (0);
-
-	sysfs_path = zpool_power_sysfs_path(zhp, vdev);
-	if (sysfs_path == NULL)
-		return (ENOENT);
-
-	if (zpool_power_use_word(sysfs_path)) {
-		val = turn_on ? "on" : "off";
-	} else {
-		val = turn_on ? "1" : "0";
-	}
-
-	rc = zpool_sysfs_puts(sysfs_path, (char *)val);
-
-	free(sysfs_path);
-	if (rc != 0) {
-		return (EIO);
-	}
-
-	/*
-	 * Wait up to 30 seconds for sysfs power value to change after
-	 * writing it.
-	 */
-	timeout_ms = zpool_getenv_int("ZPOOL_POWER_ON_SLOT_TIMEOUT_MS", 30000);
-	for (int i = 0; i < MAX(1, timeout_ms / 200); i++) {
-		rc = zpool_power_current_state(zhp, vdev);
-		if (rc == (int)turn_on)
-			return (0);	/* success */
-
-		fsleep(0.200);	/* 200ms */
-	}
-
-	/* sysfs value never changed */
-	return (EBADE);
-}
--- a/cmd/zpool/zpool.d/ses
+++ b/cmd/zpool/zpool.d/ses
@ -33,18 +33,10 @@ for i in $scripts ; do
 	val=""
 	case $i in
 	enc)
-		if echo "$VDEV_ENC_SYSFS_PATH" | grep -q '/sys/bus/pci/slots' ; then
-			val="$VDEV_ENC_SYSFS_PATH"
-		else
-			val="$(ls """$VDEV_ENC_SYSFS_PATH/../../""" 2>/dev/null)"
-		fi
+		val=$(ls "$VDEV_ENC_SYSFS_PATH/../../" 2>/dev/null)
 		;;
 	slot)
-		if echo "$VDEV_ENC_SYSFS_PATH" | grep -q '/sys/bus/pci/slots' ; then
-			val="$(basename """$VDEV_ENC_SYSFS_PATH""")"
-		else
-			val="$(cat """$VDEV_ENC_SYSFS_PATH/slot""" 2>/dev/null)"
-		fi
+		val=$(cat "$VDEV_ENC_SYSFS_PATH/slot" 2>/dev/null)
 		;;
 	encdev)
 		val=$(ls "$VDEV_ENC_SYSFS_PATH/../device/scsi_generic" 2>/dev/null)
--- a/cmd/zpool/zpool_iter.c
+++ b/cmd/zpool/zpool_iter.c
@ -554,10 +554,6 @@ for_each_vdev_run_cb(void *zhp_data, nvlist_t *nv, void *cb_vcdl)
 	if (nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &path) != 0)
 		return (1);

-	/* Make sure we're getting the updated enclosure sysfs path */
-	update_vdev_config_dev_sysfs_path(nv, path,
-	    ZPOOL_CONFIG_VDEV_ENC_SYSFS_PATH);
-
 	nvlist_lookup_string(nv, ZPOOL_CONFIG_VDEV_ENC_SYSFS_PATH,
 	    &vdev_enc_sysfs_path);

--- a/cmd/zpool/zpool_main.c
+++ b/cmd/zpool/zpool_main.c
--- a/cmd/zpool/zpool_util.h
+++ b/cmd/zpool/zpool_util.h
@ -138,9 +138,6 @@ int check_file(const char *file, boolean_t force, boolean_t isspare);
 void after_zpool_upgrade(zpool_handle_t *zhp);
 int check_file_generic(const char *file, boolean_t force, boolean_t isspare);

-int zpool_power(zpool_handle_t *zhp, char *vdev, boolean_t turn_on);
-int zpool_power_current_state(zpool_handle_t *zhp, char *vdev);
-
 #ifdef	__cplusplus
 }
 #endif
--- a/cmd/zpool/zpool_vdev.c
+++ b/cmd/zpool/zpool_vdev.c
@ -372,10 +372,6 @@ make_leaf_vdev(nvlist_t *props, const char *arg, boolean_t is_primary)
 	verify(nvlist_add_string(vdev, ZPOOL_CONFIG_PATH, path) == 0);
 	verify(nvlist_add_string(vdev, ZPOOL_CONFIG_TYPE, type) == 0);

-	/* Lookup and add the enclosure sysfs path (if exists) */
-	update_vdev_config_dev_sysfs_path(vdev, path,
-	    ZPOOL_CONFIG_VDEV_ENC_SYSFS_PATH);
-
 	if (strcmp(type, VDEV_TYPE_DISK) == 0)
 		verify(nvlist_add_uint64(vdev, ZPOOL_CONFIG_WHOLE_DISK,
 		    (uint64_t)wholedisk) == 0);
--- a/cmd/zstream/Makefile.am
+++ b/cmd/zstream/Makefile.am
@ -1,5 +1,3 @@
-zstream_CPPFLAGS = $(AM_CPPFLAGS) $(LIBZPOOL_CPPFLAGS)
-
 sbin_PROGRAMS   += zstream
 CPPCHECKTARGETS += zstream

--- a/cmd/zstream/zstream_decompress.c
+++ b/cmd/zstream/zstream_decompress.c
@ -22,8 +22,6 @@
 /*
 * Copyright 2022 Axcient.  All rights reserved.
 * Use is subject to license terms.
- *
- * Copyright (c) 2024, Klara, Inc.
 */

 #include <err.h>
@ -259,73 +257,83 @@ zstream_do_decompress(int argc, char *argv[])
 			ENTRY e = {.key = key};

 			p = hsearch(e, FIND);
-			if (p == NULL) {
-				/*
-				 * Read the contents of the block unaltered
-				 */
-				(void) sfread(buf, payload_size, stdin);
+			if (p != NULL) {
+				zio_decompress_func_t *xfunc = NULL;
+				switch ((enum zio_compress)(intptr_t)p->data) {
+				case ZIO_COMPRESS_OFF:
+					xfunc = NULL;
 					break;
+				case ZIO_COMPRESS_LZJB:
+					xfunc = lzjb_decompress;
+					break;
+				case ZIO_COMPRESS_GZIP_1:
+					xfunc = gzip_decompress;
+					break;
+				case ZIO_COMPRESS_ZLE:
+					xfunc = zle_decompress;
+					break;
+				case ZIO_COMPRESS_LZ4:
+					xfunc = lz4_decompress_zfs;
+					break;
+				case ZIO_COMPRESS_ZSTD:
+					xfunc = zfs_zstd_decompress;
+					break;
+				default:
+					assert(B_FALSE);
 				}

+
 				/*
 				 * Read and decompress the block
 				 */
-			enum zio_compress c =
-			    (enum zio_compress)(intptr_t)p->data;
-
-			if (c == ZIO_COMPRESS_OFF) {
-				(void) sfread(buf, payload_size, stdin);
-				drrw->drr_compressiontype = 0;
-				drrw->drr_compressed_size = 0;
-				if (verbose)
-					fprintf(stderr,
-					    "Resetting compression type to "
-					    "off for ino %llu offset %llu\n",
-					    (u_longlong_t)drrw->drr_object,
-					    (u_longlong_t)drrw->drr_offset);
-				break;
-			}
-
-			uint64_t lsize = drrw->drr_logical_size;
-			ASSERT3U(payload_size, <=, lsize);
-
 				char *lzbuf = safe_calloc(payload_size);
 				(void) sfread(lzbuf, payload_size, stdin);
-
-			abd_t sabd, dabd;
-			abd_get_from_buf_struct(&sabd, lzbuf, payload_size);
-			abd_get_from_buf_struct(&dabd, buf, lsize);
-			int err = zio_decompress_data(c, &sabd, &dabd,
-			    payload_size, lsize, NULL);
-			abd_free(&dabd);
-			abd_free(&sabd);
-
-			if (err == 0) {
-				drrw->drr_compressiontype = 0;
-				drrw->drr_compressed_size = 0;
-				payload_size = lsize;
-				if (verbose) {
-					fprintf(stderr,
-					    "successfully decompressed "
-					    "ino %llu offset %llu\n",
-					    (u_longlong_t)drrw->drr_object,
-					    (u_longlong_t)drrw->drr_offset);
-				}
-			} else {
+				if (xfunc == NULL) {
+					memcpy(buf, lzbuf, payload_size);
+					drrw->drr_compressiontype =
+					    ZIO_COMPRESS_OFF;
+					if (verbose)
+						fprintf(stderr, "Resetting "
+						    "compression type to off "
+						    "for ino %llu offset "
+						    "%llu\n",
+						    (u_longlong_t)
+						    drrw->drr_object,
+						    (u_longlong_t)
+						    drrw->drr_offset);
+				} else if (0 != xfunc(lzbuf, buf,
+				    payload_size, payload_size, 0)) {
 					/*
-				 * The block must not be compressed, at least
-				 * not with this compression type, possibly
-				 * because it gets written multiple times in
-				 * this stream.
+					 * The block must not be compressed,
+					 * at least not with this compression
+					 * type, possibly because it gets
+					 * written multiple times in this
+					 * stream.
 					 */
 					warnx("decompression failed for "
 					    "ino %llu offset %llu",
 					    (u_longlong_t)drrw->drr_object,
 					    (u_longlong_t)drrw->drr_offset);
 					memcpy(buf, lzbuf, payload_size);
+				} else if (verbose) {
+					drrw->drr_compressiontype =
+					    ZIO_COMPRESS_OFF;
+					fprintf(stderr, "successfully "
+					    "decompressed ino %llu "
+					    "offset %llu\n",
+					    (u_longlong_t)drrw->drr_object,
+					    (u_longlong_t)drrw->drr_offset);
+				} else {
+					drrw->drr_compressiontype =
+					    ZIO_COMPRESS_OFF;
 				}
-
 				free(lzbuf);
+			} else {
+				/*
+				 * Read the contents of the block unaltered
+				 */
+				(void) sfread(buf, payload_size, stdin);
+			}
 			break;
 		}

--- a/cmd/zstream/zstream_recompress.c
+++ b/cmd/zstream/zstream_recompress.c
@ -22,9 +22,10 @@
 /*
 * Copyright 2022 Axcient.  All rights reserved.
 * Use is subject to license terms.
- *
+ */
+
+/*
 * Copyright (c) 2022 by Delphix. All rights reserved.
- * Copyright (c) 2024, Klara, Inc.
 */

 #include <err.h>
@ -71,12 +72,12 @@ zstream_do_recompress(int argc, char *argv[])
 	dmu_replay_record_t *drr = &thedrr;
 	zio_cksum_t stream_cksum;
 	int c;
-	int level = 0;
+	int level = -1;

 	while ((c = getopt(argc, argv, "l:")) != -1) {
 		switch (c) {
 		case 'l':
-			if (sscanf(optarg, "%d", &level) != 1) {
+			if (sscanf(optarg, "%d", &level) != 0) {
 				fprintf(stderr,
 				    "failed to parse level '%s'\n",
 				    optarg);
@ -96,22 +97,34 @@ zstream_do_recompress(int argc, char *argv[])

 	if (argc != 1)
 		zstream_usage();
-
-	enum zio_compress ctype;
-	if (strcmp(argv[0], "off") == 0) {
-		ctype = ZIO_COMPRESS_OFF;
+	int type = 0;
+	zio_compress_info_t *cinfo = NULL;
+	if (0 == strcmp(argv[0], "off")) {
+		type = ZIO_COMPRESS_OFF;
+		cinfo = &zio_compress_table[type];
+	} else if (0 == strcmp(argv[0], "inherit") ||
+	    0 == strcmp(argv[0], "empty") ||
+	    0 == strcmp(argv[0], "on")) {
+		// Fall through to invalid compression type case
 	} else {
-		for (ctype = 0; ctype < ZIO_COMPRESS_FUNCTIONS; ctype++) {
-			if (strcmp(argv[0],
-			    zio_compress_table[ctype].ci_name) == 0)
+		for (int i = 0; i < ZIO_COMPRESS_FUNCTIONS; i++) {
+			if (0 == strcmp(zio_compress_table[i].ci_name,
+			    argv[0])) {
+				cinfo = &zio_compress_table[i];
+				type = i;
 				break;
 			}
-		if (ctype == ZIO_COMPRESS_FUNCTIONS ||
-		    zio_compress_table[ctype].ci_compress == NULL) {
+		}
+	}
+	if (cinfo == NULL) {
 		fprintf(stderr, "Invalid compression type %s.\n",
 		    argv[0]);
 		exit(2);
 	}
+
+	if (cinfo->ci_compress == NULL) {
+		type = 0;
+		cinfo = &zio_compress_table[0];
 	}

 	if (isatty(STDIN_FILENO)) {
@ -122,7 +135,6 @@ zstream_do_recompress(int argc, char *argv[])
 		exit(1);
 	}

-	abd_init();
 	fletcher_4_init();
 	zio_init();
 	zstd_init();
@ -235,78 +247,63 @@ zstream_do_recompress(int argc, char *argv[])
 				(void) sfread(buf, payload_size, stdin);
 				break;
 			}
-			enum zio_compress dtype = drrw->drr_compressiontype;
-			if (dtype >= ZIO_COMPRESS_FUNCTIONS) {
+			if (drrw->drr_compressiontype >=
+			    ZIO_COMPRESS_FUNCTIONS) {
 				fprintf(stderr, "Invalid compression type in "
-				    "stream: %d\n", dtype);
+				    "stream: %d\n", drrw->drr_compressiontype);
 				exit(3);
 			}
-			if (zio_compress_table[dtype].ci_decompress == NULL)
-				dtype = ZIO_COMPRESS_OFF;
+			zio_compress_info_t *dinfo =
+			    &zio_compress_table[drrw->drr_compressiontype];

 			/* Set up buffers to minimize memcpys */
 			char *cbuf, *dbuf;
-			if (ctype == ZIO_COMPRESS_OFF)
+			if (cinfo->ci_compress == NULL)
 				dbuf = buf;
 			else
 				dbuf = safe_calloc(bufsz);

-			if (dtype == ZIO_COMPRESS_OFF)
+			if (dinfo->ci_decompress == NULL)
 				cbuf = dbuf;
 			else
 				cbuf = safe_calloc(payload_size);

 			/* Read and decompress the payload */
 			(void) sfread(cbuf, payload_size, stdin);
-			if (dtype != ZIO_COMPRESS_OFF) {
-				abd_t cabd, dabd;
-				abd_get_from_buf_struct(&cabd,
-				    cbuf, payload_size);
-				abd_get_from_buf_struct(&dabd, dbuf,
-				    MIN(bufsz, drrw->drr_logical_size));
-				if (zio_decompress_data(dtype, &cabd, &dabd,
-				    payload_size, abd_get_size(&dabd),
-				    NULL) != 0) {
+			if (dinfo->ci_decompress != NULL) {
+				if (0 != dinfo->ci_decompress(cbuf, dbuf,
+				    payload_size, MIN(bufsz,
+				    drrw->drr_logical_size), dinfo->ci_level)) {
 					warnx("decompression type %d failed "
 					    "for ino %llu offset %llu",
-					    dtype,
+					    type,
 					    (u_longlong_t)drrw->drr_object,
 					    (u_longlong_t)drrw->drr_offset);
 					exit(4);
 				}
 				payload_size = drrw->drr_logical_size;
-				abd_free(&dabd);
-				abd_free(&cabd);
 				free(cbuf);
 			}

 			/* Recompress the payload */
-			if (ctype != ZIO_COMPRESS_OFF) {
-				abd_t dabd, abd;
-				abd_get_from_buf_struct(&dabd,
-				    dbuf, drrw->drr_logical_size);
-				abd_t *pabd =
-				    abd_get_from_buf_struct(&abd, buf, bufsz);
-				size_t csize = zio_compress_data(ctype, &dabd,
-				    &pabd, drrw->drr_logical_size, level);
-				size_t rounded =
-				    P2ROUNDUP(csize, SPA_MINBLOCKSIZE);
-				if (rounded >= drrw->drr_logical_size) {
+			if (cinfo->ci_compress != NULL) {
+				payload_size = P2ROUNDUP(cinfo->ci_compress(
+				    dbuf, buf, drrw->drr_logical_size,
+				    MIN(payload_size, bufsz), (level == -1 ?
+				    cinfo->ci_level : level)),
+				    SPA_MINBLOCKSIZE);
+				if (payload_size != drrw->drr_logical_size) {
+					drrw->drr_compressiontype = type;
+					drrw->drr_compressed_size =
+					    payload_size;
+				} else {
 					memcpy(buf, dbuf, payload_size);
 					drrw->drr_compressiontype = 0;
 					drrw->drr_compressed_size = 0;
-				} else {
-					abd_zero_off(pabd, csize,
-					    rounded - csize);
-					drrw->drr_compressiontype = ctype;
-					drrw->drr_compressed_size =
-					    payload_size = rounded;
 				}
-				abd_free(&abd);
-				abd_free(&dabd);
 				free(dbuf);
 			} else {
-				drrw->drr_compressiontype = 0;
+				drrw->drr_compressiontype = type;
 				drrw->drr_compressed_size = 0;
 			}
 			break;
@ -374,7 +371,6 @@ zstream_do_recompress(int argc, char *argv[])
 	fletcher_4_fini();
 	zio_fini();
 	zstd_fini();
-	abd_fini();

 	return (0);
 }
--- a/cmd/zstream/zstream_redup.c
+++ b/cmd/zstream/zstream_redup.c
@ -56,6 +56,15 @@ typedef struct redup_table {
 	int		numhashbits;
 } redup_table_t;

+int
+highbit64(uint64_t i)
+{
+	if (i == 0)
+		return (0);
+
+	return (NBBY * sizeof (uint64_t) - __builtin_clzll(i));
+}
+
 void *
 safe_calloc(size_t n)
 {
@ -177,7 +186,7 @@ static void
 zfs_redup_stream(int infd, int outfd, boolean_t verbose)
 {
 	int bufsz = SPA_MAXBLOCKSIZE;
-	dmu_replay_record_t thedrr;
+	dmu_replay_record_t thedrr = { 0 };
 	dmu_replay_record_t *drr = &thedrr;
 	redup_table_t rdt;
 	zio_cksum_t stream_cksum;
@ -185,8 +194,6 @@ zfs_redup_stream(int infd, int outfd, boolean_t verbose)
 	uint64_t num_records = 0;
 	uint64_t num_write_byref_records = 0;

-	memset(&thedrr, 0, sizeof (dmu_replay_record_t));
-
 #ifdef _ILP32
 	uint64_t max_rde_size = SMALLEST_POSSIBLE_MAX_RDT_MB << 20;
 #else
--- a/cmd/ztest.c
+++ b/cmd/ztest.c
--- a/config/Rules.am
+++ b/config/Rules.am
@ -10,8 +10,7 @@ AM_CPPFLAGS = \
 	-I$(top_srcdir)/include \
 	-I$(top_srcdir)/module/icp/include \
 	-I$(top_srcdir)/lib/libspl/include \
-	-I$(top_srcdir)/lib/libspl/include/os/@ac_system_l@ \
-	-I$(top_srcdir)/lib/libzpool/include
+	-I$(top_srcdir)/lib/libspl/include/os/@ac_system_l@

 AM_LIBTOOLFLAGS = --silent

@ -22,9 +21,7 @@ AM_CFLAGS += $(IMPLICIT_FALLTHROUGH)
 AM_CFLAGS += $(DEBUG_CFLAGS)
 AM_CFLAGS += $(ASAN_CFLAGS)
 AM_CFLAGS += $(UBSAN_CFLAGS)
-AM_CFLAGS += $(CODE_COVERAGE_CFLAGS)
-AM_CFLAGS += $(NO_FORMAT_ZERO_LENGTH)
-AM_CFLAGS += $(NO_FORMAT_TRUNCATION)
+AM_CFLAGS += $(CODE_COVERAGE_CFLAGS) $(NO_FORMAT_ZERO_LENGTH)
 if BUILD_FREEBSD
 AM_CFLAGS += -fPIC -Werror -Wno-unknown-pragmas -Wno-enum-conversion
 AM_CFLAGS += -include $(top_srcdir)/include/os/freebsd/spl/sys/ccompile.h
@ -45,6 +42,21 @@ AM_CPPFLAGS += $(DEBUG_CPPFLAGS)
 AM_CPPFLAGS += $(CODE_COVERAGE_CPPFLAGS)
 AM_CPPFLAGS += -DTEXT_DOMAIN=\"zfs-@ac_system_l@-user\"

+AM_CPPFLAGS_NOCHECK  = -D"strtok(...)=strtok(__VA_ARGS__) __attribute__((deprecated(\"Use strtok_r(3) instead!\")))"
+AM_CPPFLAGS_NOCHECK += -D"__xpg_basename(...)=__xpg_basename(__VA_ARGS__) __attribute__((deprecated(\"basename(3) is underspecified. Use zfs_basename() instead!\")))"
+AM_CPPFLAGS_NOCHECK += -D"basename(...)=basename(__VA_ARGS__) __attribute__((deprecated(\"basename(3) is underspecified. Use zfs_basename() instead!\")))"
+AM_CPPFLAGS_NOCHECK += -D"dirname(...)=dirname(__VA_ARGS__) __attribute__((deprecated(\"dirname(3) is underspecified. Use zfs_dirnamelen() instead!\")))"
+AM_CPPFLAGS_NOCHECK += -D"bcopy(...)=__attribute__((deprecated(\"bcopy(3) is deprecated. Use memcpy(3)/memmove(3) instead!\"))) bcopy(__VA_ARGS__)"
+AM_CPPFLAGS_NOCHECK += -D"bcmp(...)=__attribute__((deprecated(\"bcmp(3) is deprecated. Use memcmp(3) instead!\"))) bcmp(__VA_ARGS__)"
+AM_CPPFLAGS_NOCHECK += -D"bzero(...)=__attribute__((deprecated(\"bzero(3) is deprecated. Use memset(3) instead!\"))) bzero(__VA_ARGS__)"
+AM_CPPFLAGS_NOCHECK += -D"asctime(...)=__attribute__((deprecated(\"Use strftime(3) instead!\"))) asctime(__VA_ARGS__)"
+AM_CPPFLAGS_NOCHECK += -D"asctime_r(...)=__attribute__((deprecated(\"Use strftime(3) instead!\"))) asctime_r(__VA_ARGS__)"
+AM_CPPFLAGS_NOCHECK += -D"gmtime(...)=__attribute__((deprecated(\"gmtime(3) isn't thread-safe. Use gmtime_r(3) instead!\"))) gmtime(__VA_ARGS__)"
+AM_CPPFLAGS_NOCHECK += -D"localtime(...)=__attribute__((deprecated(\"localtime(3) isn't thread-safe. Use localtime_r(3) instead!\"))) localtime(__VA_ARGS__)"
+AM_CPPFLAGS_NOCHECK += -D"strncpy(...)=__attribute__((deprecated(\"strncpy(3) is deprecated. Use strlcpy(3) instead!\"))) strncpy(__VA_ARGS__)"
+
+AM_CPPFLAGS += $(AM_CPPFLAGS_NOCHECK)
+
 if ASAN_ENABLED
 AM_CPPFLAGS += -DZFS_ASAN_ENABLED
 endif
@ -58,7 +70,7 @@ AM_LDFLAGS += $(ASAN_LDFLAGS)
 AM_LDFLAGS += $(UBSAN_LDFLAGS)

 if BUILD_FREEBSD
-AM_LDFLAGS += -fstack-protector-strong
+AM_LDFLAGS += -fstack-protector-strong -shared
 AM_LDFLAGS += -Wl,-x -Wl,--fatal-warnings -Wl,--warn-shared-textrel
 AM_LDFLAGS += -lm
 endif
@ -71,7 +83,4 @@ KERNEL_CFLAGS       = $(FRAME_LARGER_THAN)
 LIBRARY_CFLAGS      = -no-suppress

 # Forcibly enable asserts/debugging for libzpool &al.
-# Since ZFS_DEBUG can change shared data structures, all libzpool users must
-# be compiled with the same flags.
-# See https://github.com/openzfs/zfs/issues/16476
-LIBZPOOL_CPPFLAGS = -DDEBUG -UNDEBUG -DZFS_DEBUG
+FORCEDEBUG_CPPFLAGS = -DDEBUG -UNDEBUG -DZFS_DEBUG
--- a/config/Substfiles.am
+++ b/config/Substfiles.am
@ -18,7 +18,6 @@ subst_sed_cmd = \
 	-e 's|@ASAN_ENABLED[@]|$(ASAN_ENABLED)|g' \
 	-e 's|@DEFAULT_INIT_NFS_SERVER[@]|$(DEFAULT_INIT_NFS_SERVER)|g' \
 	-e 's|@DEFAULT_INIT_SHELL[@]|$(DEFAULT_INIT_SHELL)|g' \
-	-e 's|@IS_SYSV_RC[@]|$(IS_SYSV_RC)|g' \
 	-e 's|@LIBFETCH_DYNAMIC[@]|$(LIBFETCH_DYNAMIC)|g' \
 	-e 's|@LIBFETCH_SONAME[@]|$(LIBFETCH_SONAME)|g' \
 	-e 's|@PYTHON[@]|$(PYTHON)|g' \
@ -44,4 +43,4 @@ SUBSTFILES =
 CLEANFILES += $(SUBSTFILES)
 dist_noinst_DATA += $(SUBSTFILES:=.in)

-$(SUBSTFILES): $(call SUBST,%,)
+$(call SUBST,%,)
--- a/config/always-pyzfs.m4
+++ b/config/always-pyzfs.m4
@ -80,11 +80,10 @@ AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_PYZFS], [
 			[AC_MSG_ERROR("Python $PYTHON_VERSION unknown")]
 		)

+		AX_PYTHON_DEVEL([$PYTHON_REQUIRED_VERSION], [
 			AS_IF([test "x$enable_pyzfs" = xyes], [
-			AX_PYTHON_DEVEL([$PYTHON_REQUIRED_VERSION])
-		], [
-			AX_PYTHON_DEVEL([$PYTHON_REQUIRED_VERSION], [true])
-			AS_IF([test "x$ax_python_devel_found" = xno], [
+				AC_MSG_ERROR("Python $PYTHON_REQUIRED_VERSION development library is not installed")
+			], [test "x$enable_pyzfs" != xno], [
 				enable_pyzfs=no
 			])
 		])
--- a/config/ax_python_devel.m4
+++ b/config/ax_python_devel.m4
@ -4,13 +4,18 @@
 #
 # SYNOPSIS
 #
-#   AX_PYTHON_DEVEL([version[,optional]])
+#   AX_PYTHON_DEVEL([version], [action-if-not-found])
 #
 # DESCRIPTION
 #
 #   Note: Defines as a precious variable "PYTHON_VERSION". Don't override it
 #   in your configure.ac.
 #
+#   Note: this is a slightly modified version of the original AX_PYTHON_DEVEL
+#   macro which accepts an additional [action-if-not-found] argument. This
+#   allow to detect if Python development is available without aborting the
+#   configure phase with an hard error in case it is not.
+#
 #   This macro checks for Python and tries to get the include path to
 #   'Python.h'. It provides the $(PYTHON_CPPFLAGS) and $(PYTHON_LIBS) output
 #   variables. It also exports $(PYTHON_EXTRA_LIBS) and
@ -23,11 +28,6 @@
 #   version number. Don't use "PYTHON_VERSION" for this: that environment
 #   variable is declared as precious and thus reserved for the end-user.
 #
-#   By default this will fail if it does not detect a development version of
-#   python.  If you want it to continue, set optional to true, like
-#   AX_PYTHON_DEVEL([], [true]).  The ax_python_devel_found variable will be
-#   "no" if it fails.
-#
 #   This macro should work for all versions of Python >= 2.1.0. As an end
 #   user, you can disable the check for the python version by setting the
 #   PYTHON_NOVERSIONCHECK environment variable to something else than the
@ -45,6 +45,7 @@
 #   Copyright (c) 2009 Matteo Settenvini <matteo@member.fsf.org>
 #   Copyright (c) 2009 Horst Knorr <hk_classes@knoda.org>
 #   Copyright (c) 2013 Daniel Mullner <muellner@math.stanford.edu>
+#   Copyright (c) 2018 loli10K <ezomori.nozomu@gmail.com>
 #
 #   This program is free software: you can redistribute it and/or modify it
 #   under the terms of the GNU General Public License as published by the
@ -72,18 +73,10 @@
 #   modified version of the Autoconf Macro, you may extend this special
 #   exception to the GPL to apply to your modified version as well.

-#serial 36
+#serial 21

 AU_ALIAS([AC_PYTHON_DEVEL], [AX_PYTHON_DEVEL])
 AC_DEFUN([AX_PYTHON_DEVEL],[
-	# Get whether it's optional
-	if test -z "$2"; then
-	   ax_python_devel_optional=false
-	else
-	   ax_python_devel_optional=$2
-	fi
-	ax_python_devel_found=yes
-
 	#
 	# Allow the use of a (user set) custom python version
 	#
@ -94,15 +87,12 @@ AC_DEFUN([AX_PYTHON_DEVEL],[

 	AC_PATH_PROG([PYTHON],[python[$PYTHON_VERSION]])
 	if test -z "$PYTHON"; then
-	   AC_MSG_WARN([Cannot find python$PYTHON_VERSION in your system path])
-	   if ! $ax_python_devel_optional; then
-	      AC_MSG_ERROR([Giving up, python development not available])
-	   fi
-	   ax_python_devel_found=no
+		m4_ifvaln([$2],[$2],[
+			AC_MSG_ERROR([Cannot find python$PYTHON_VERSION in your system path])
 			PYTHON_VERSION=""
+		])
 	fi

-	if test $ax_python_devel_found = yes; then
 	#
 	# Check for a version of Python >= 2.1.0
 	#
@ -113,7 +103,7 @@ AC_DEFUN([AX_PYTHON_DEVEL],[
 	if test "$ac_supports_python_ver" != "True"; then
 		if test -z "$PYTHON_NOVERSIONCHECK"; then
 			AC_MSG_RESULT([no])
-			AC_MSG_WARN([
+			AC_MSG_FAILURE([
 This version of the AC@&t@_PYTHON_DEVEL macro
 doesn't work properly with versions of Python before
 2.1.0. You may need to re-run configure, setting the
@ -122,20 +112,13 @@ PYTHON_EXTRA_LIBS and PYTHON_EXTRA_LDFLAGS by hand.
 Moreover, to disable this check, set PYTHON_NOVERSIONCHECK
 to something else than an empty string.
 ])
-			if ! $ax_python_devel_optional; then
-			   AC_MSG_FAILURE([Giving up])
-			fi
-			ax_python_devel_found=no
-			PYTHON_VERSION=""
 		else
 			AC_MSG_RESULT([skip at user request])
 		fi
 	else
 		AC_MSG_RESULT([yes])
 	fi
-	fi

-	if test $ax_python_devel_found = yes; then
 	#
 	# If the macro parameter ``version'' is set, honour it.
 	# A Python shim class, VPy, is used to implement correct version comparisons via
@ -150,7 +133,7 @@ class VPy:
        return tuple(map(int, s.strip().replace("rc", ".").split(".")))
    def __init__(self):
        import sys
-        self.vpy = tuple(sys.version_info)[[:3]]
+        self.vpy = tuple(sys.version_info)
    def __eq__(self, s):
        return self.vpy == self.vtup(s)
    def __ne__(self, s):
@ -172,69 +155,25 @@ EOF
 			AC_MSG_RESULT([yes])
 		else
 			AC_MSG_RESULT([no])
-			AC_MSG_WARN([this package requires Python $1.
+			AC_MSG_ERROR([this package requires Python $1.
 If you have it installed, but it isn't the default Python
 interpreter in your system path, please pass the PYTHON_VERSION
 variable to configure. See ``configure --help'' for reference.
 ])
-			if ! $ax_python_devel_optional; then
-			   AC_MSG_ERROR([Giving up])
-			fi
-			ax_python_devel_found=no
 			PYTHON_VERSION=""
 		fi
 	fi
-	fi

-	if test $ax_python_devel_found = yes; then
-	   #
-	   # Check if you have distutils, else fail
-	   #
-	   AC_MSG_CHECKING([for the sysconfig Python package])
-	   ac_sysconfig_result=`$PYTHON -c "import sysconfig" 2>&1`
-	   if test $? -eq 0; then
-		AC_MSG_RESULT([yes])
-		IMPORT_SYSCONFIG="import sysconfig"
-	   else
-		AC_MSG_RESULT([no])
-
-		AC_MSG_CHECKING([for the distutils Python package])
-		ac_sysconfig_result=`$PYTHON -c "from distutils import sysconfig" 2>&1`
-		if test $? -eq 0; then
-			AC_MSG_RESULT([yes])
-			IMPORT_SYSCONFIG="from distutils import sysconfig"
-		else
-			AC_MSG_WARN([cannot import Python module "distutils".
-Please check your Python installation. The error was:
-$ac_sysconfig_result])
-			if ! $ax_python_devel_optional; then
-			   AC_MSG_ERROR([Giving up])
-			fi
-			ax_python_devel_found=no
-			PYTHON_VERSION=""
-		fi
-	   fi
-	fi
-
-	if test $ax_python_devel_found = yes; then
 	#
 	# Check for Python include path
 	#
+	#
 	AC_MSG_CHECKING([for Python include path])
 	if test -z "$PYTHON_CPPFLAGS"; then
-		if test "$IMPORT_SYSCONFIG" = "import sysconfig"; then
-			# sysconfig module has different functions
-			python_path=`$PYTHON -c "$IMPORT_SYSCONFIG; \
+		python_path=`$PYTHON -c "import sysconfig; \
 			print (sysconfig.get_path('include'));"`
-			plat_python_path=`$PYTHON -c "$IMPORT_SYSCONFIG; \
+		plat_python_path=`$PYTHON -c "import sysconfig; \
 			print (sysconfig.get_path('platinclude'));"`
-		else
-			# old distutils way
-			python_path=`$PYTHON -c "$IMPORT_SYSCONFIG; \
-				print (sysconfig.get_python_inc ());"`
-			plat_python_path=`$PYTHON -c "$IMPORT_SYSCONFIG; \
-				print (sysconfig.get_python_inc (plat_specific=1));"`
-		fi
 		if test -n "${python_path}"; then
 			if test "${plat_python_path}" != "${python_path}"; then
 				python_path="-I$python_path -I$plat_python_path"
@ -269,7 +208,7 @@ EOD`
 				ac_python_version=$PYTHON_VERSION
 			else
 				ac_python_version=`$PYTHON -c "import sys; \
-					print ("%d.%d" % sys.version_info[[:2]])"`
+					print ('.'.join(sys.version.split('.')[[:2]]))"`
 			fi
 		fi

@ -281,7 +220,7 @@ EOD`
 		ac_python_libdir=`cat<<EOD | $PYTHON -

 # There should be only one
-$IMPORT_SYSCONFIG
+import sysconfig
 e = sysconfig.get_config_var('LIBDIR')
 if e is not None:
 	print (e)
@ -290,7 +229,7 @@ EOD`
 		# Now, for the library:
 		ac_python_library=`cat<<EOD | $PYTHON -

-$IMPORT_SYSCONFIG
+import sysconfig
 c = sysconfig.get_config_vars()
 if 'LDVERSION' in c:
 	print ('python'+c[['LDVERSION']])
@ -310,27 +249,21 @@ EOD`
 		else
 			# old way: use libpython from python_configdir
 			ac_python_libdir=`$PYTHON -c \
-			  "from sysconfig import get_python_lib as f; \
+			  "import sysconfig; \
 			  import os; \
-			  print (os.path.join(f(plat_specific=1, standard_lib=1), 'config'));"`
+			  print (os.path.join(sysconfig.get_path('platstdlib'), 'config'));"`
 			PYTHON_LIBS="-L$ac_python_libdir -lpython$ac_python_version"
 		fi

 		if test -z "PYTHON_LIBS"; then
-			AC_MSG_WARN([
+			m4_ifvaln([$2],[$2],[
+				AC_MSG_ERROR([
  Cannot determine location of your Python DSO. Please check it was installed with
  dynamic libraries enabled, or try setting PYTHON_LIBS by hand.
 				])
-			if ! $ax_python_devel_optional; then
-			   AC_MSG_ERROR([Giving up])
-			fi
-			ax_python_devel_found=no
-			PYTHON_VERSION=""
+			])
 		fi
 	fi
-	fi
-
-	if test $ax_python_devel_found = yes; then
 	AC_MSG_RESULT([$PYTHON_LIBS])
 	AC_SUBST([PYTHON_LIBS])

@ -339,65 +272,20 @@ EOD`
 	#
 	AC_MSG_CHECKING([for Python site-packages path])
 	if test -z "$PYTHON_SITE_PKG"; then
-		if test "$IMPORT_SYSCONFIG" = "import sysconfig"; then
-			PYTHON_SITE_PKG=`$PYTHON -c "
-$IMPORT_SYSCONFIG;
-if hasattr(sysconfig, 'get_default_scheme'):
-    scheme = sysconfig.get_default_scheme()
-else:
-    scheme = sysconfig._get_default_scheme()
-if scheme == 'posix_local':
-    # Debian's default scheme installs to /usr/local/ but we want to find headers in /usr/
-    scheme = 'posix_prefix'
-prefix = '$prefix'
-if prefix == 'NONE':
-    prefix = '$ac_default_prefix'
-sitedir = sysconfig.get_path('purelib', scheme, vars={'base': prefix})
-print(sitedir)"`
-		else
-			# distutils.sysconfig way
-			PYTHON_SITE_PKG=`$PYTHON -c "$IMPORT_SYSCONFIG; \
-				print (sysconfig.get_python_lib(0,0));"`
-		fi
+		PYTHON_SITE_PKG=`$PYTHON -c "import distutils.sysconfig; \
+			print (distutils.sysconfig.get_python_lib(0,0));" 2>/dev/null || \
+			$PYTHON -c "import sysconfig; \
+			print (sysconfig.get_path('purelib'));"`
 	fi
 	AC_MSG_RESULT([$PYTHON_SITE_PKG])
 	AC_SUBST([PYTHON_SITE_PKG])

-	   #
-	   # Check for platform-specific site packages
-	   #
-	   AC_MSG_CHECKING([for Python platform specific site-packages path])
-	   if test -z "$PYTHON_PLATFORM_SITE_PKG"; then
-		if test "$IMPORT_SYSCONFIG" = "import sysconfig"; then
-			PYTHON_PLATFORM_SITE_PKG=`$PYTHON -c "
-$IMPORT_SYSCONFIG;
-if hasattr(sysconfig, 'get_default_scheme'):
-    scheme = sysconfig.get_default_scheme()
-else:
-    scheme = sysconfig._get_default_scheme()
-if scheme == 'posix_local':
-    # Debian's default scheme installs to /usr/local/ but we want to find headers in /usr/
-    scheme = 'posix_prefix'
-prefix = '$prefix'
-if prefix == 'NONE':
-    prefix = '$ac_default_prefix'
-sitedir = sysconfig.get_path('platlib', scheme, vars={'platbase': prefix})
-print(sitedir)"`
-		else
-			# distutils.sysconfig way
-			PYTHON_PLATFORM_SITE_PKG=`$PYTHON -c "$IMPORT_SYSCONFIG; \
-				print (sysconfig.get_python_lib(1,0));"`
-		fi
-	   fi
-	   AC_MSG_RESULT([$PYTHON_PLATFORM_SITE_PKG])
-	   AC_SUBST([PYTHON_PLATFORM_SITE_PKG])
-
 	#
 	# libraries which must be linked in when embedding
 	#
 	AC_MSG_CHECKING(python extra libraries)
 	if test -z "$PYTHON_EXTRA_LIBS"; then
-	      PYTHON_EXTRA_LIBS=`$PYTHON -c "$IMPORT_SYSCONFIG; \
+	   PYTHON_EXTRA_LIBS=`$PYTHON -c "import sysconfig; \
                conf = sysconfig.get_config_var; \
                print (conf('LIBS') + ' ' + conf('SYSLIBS'))"`
 	fi
@ -409,11 +297,9 @@ print(sitedir)"`
 	#
 	AC_MSG_CHECKING(python extra linking flags)
 	if test -z "$PYTHON_EXTRA_LDFLAGS"; then
-		PYTHON_EXTRA_LDFLAGS=`$PYTHON -c "$IMPORT_SYSCONFIG; \
+		PYTHON_EXTRA_LDFLAGS=`$PYTHON -c "import sysconfig; \
 			conf = sysconfig.get_config_var; \
 			print (conf('LINKFORSHARED'))"`
-		# Hack for macos, it sticks this in here.
-		PYTHON_EXTRA_LDFLAGS=`echo $PYTHON_EXTRA_LDFLAGS | sed 's/CoreFoundation.*$/CoreFoundation/'`
 	fi
 	AC_MSG_RESULT([$PYTHON_EXTRA_LDFLAGS])
 	AC_SUBST(PYTHON_EXTRA_LDFLAGS)
@ -426,7 +312,7 @@ print(sitedir)"`
 	ac_save_LIBS="$LIBS"
 	ac_save_LDFLAGS="$LDFLAGS"
 	ac_save_CPPFLAGS="$CPPFLAGS"
-	   LIBS="$ac_save_LIBS $PYTHON_LIBS $PYTHON_EXTRA_LIBS"
+	LIBS="$ac_save_LIBS $PYTHON_LIBS $PYTHON_EXTRA_LIBS $PYTHON_EXTRA_LIBS"
 	LDFLAGS="$ac_save_LDFLAGS $PYTHON_EXTRA_LDFLAGS"
 	CPPFLAGS="$ac_save_CPPFLAGS $PYTHON_CPPFLAGS"
 	AC_LANG_PUSH([C])
@ -443,7 +329,8 @@ print(sitedir)"`
 	AC_MSG_RESULT([$pythonexists])

        if test ! "x$pythonexists" = "xyes"; then
-	      AC_MSG_WARN([
+		m4_ifvaln([$2],[$2],[
+			AC_MSG_FAILURE([
  Could not link test program to Python. Maybe the main Python library has been
  installed in some non-standard library path. If so, pass it to configure,
  via the LIBS environment variable.
@ -454,12 +341,8 @@ print(sitedir)"`
   for your distribution.  The exact name of this package varies among them.
  ============================================================================
 	   ])
-	      if ! $ax_python_devel_optional; then
-		 AC_MSG_ERROR([Giving up])
-	      fi
-	      ax_python_devel_found=no
 			PYTHON_VERSION=""
-	   fi
+		])
 	fi

 	#
--- a/config/find_system_library.m4
+++ b/config/find_system_library.m4
@ -90,8 +90,8 @@ AC_DEFUN([ZFS_AC_FIND_SYSTEM_LIBRARY], [
 	AC_DEFINE([HAVE_][$1], [1], [Define if you have [$5]])
 	$7
    ],[dnl ELSE
-	AC_SUBST([$1]_CFLAGS, [""])
-	AC_SUBST([$1]_LIBS, [""])
+	AC_SUBST([$1]_CFLAGS, [])
+	AC_SUBST([$1]_LIBS, [])
 	AC_MSG_WARN([cannot find [$5] via pkg-config or in the standard locations])
 	$8
    ])
--- a/config/kernel-acl.m4
+++ b/config/kernel-acl.m4
@ -172,7 +172,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_OPERATIONS_GET_ACL], [
 	ZFS_LINUX_TEST_SRC([inode_operations_get_acl], [
 		#include <linux/fs.h>

-		static struct posix_acl *get_acl_fn(struct inode *inode, int type)
+		struct posix_acl *get_acl_fn(struct inode *inode, int type)
 		    { return NULL; }

 		static const struct inode_operations
@ -184,7 +184,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_OPERATIONS_GET_ACL], [
 	ZFS_LINUX_TEST_SRC([inode_operations_get_acl_rcu], [
 		#include <linux/fs.h>

-		static struct posix_acl *get_acl_fn(struct inode *inode, int type,
+		struct posix_acl *get_acl_fn(struct inode *inode, int type,
 		    bool rcu) { return NULL; }

 		static const struct inode_operations
@ -196,7 +196,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_OPERATIONS_GET_ACL], [
 	ZFS_LINUX_TEST_SRC([inode_operations_get_inode_acl], [
 		#include <linux/fs.h>

-		static struct posix_acl *get_inode_acl_fn(struct inode *inode, int type,
+		struct posix_acl *get_inode_acl_fn(struct inode *inode, int type,
 		    bool rcu) { return NULL; }

 		static const struct inode_operations
@ -243,7 +243,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_OPERATIONS_SET_ACL], [
 	ZFS_LINUX_TEST_SRC([inode_operations_set_acl_mnt_idmap_dentry], [
 		#include <linux/fs.h>

-		static int set_acl_fn(struct mnt_idmap *idmap,
+		int set_acl_fn(struct mnt_idmap *idmap,
 		    struct dentry *dent, struct posix_acl *acl,
 		    int type) { return 0; }

@ -255,7 +255,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_OPERATIONS_SET_ACL], [
 	ZFS_LINUX_TEST_SRC([inode_operations_set_acl_userns_dentry], [
 		#include <linux/fs.h>

-		static int set_acl_fn(struct user_namespace *userns,
+		int set_acl_fn(struct user_namespace *userns,
 		    struct dentry *dent, struct posix_acl *acl,
 		    int type) { return 0; }

@ -267,7 +267,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_OPERATIONS_SET_ACL], [
 	ZFS_LINUX_TEST_SRC([inode_operations_set_acl_userns], [
 		#include <linux/fs.h>

-		static int set_acl_fn(struct user_namespace *userns,
+		int set_acl_fn(struct user_namespace *userns,
 		    struct inode *inode, struct posix_acl *acl,
 		    int type) { return 0; }

@ -279,7 +279,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_OPERATIONS_SET_ACL], [
 	ZFS_LINUX_TEST_SRC([inode_operations_set_acl], [
 		#include <linux/fs.h>

-		static int set_acl_fn(struct inode *inode, struct posix_acl *acl,
+		int set_acl_fn(struct inode *inode, struct posix_acl *acl,
 		    int type) { return 0; }

 		static const struct inode_operations
--- a/config/kernel-automount.m4
+++ b/config/kernel-automount.m4
@ -8,7 +8,7 @@ dnl #
 AC_DEFUN([ZFS_AC_KERNEL_SRC_AUTOMOUNT], [
 	ZFS_LINUX_TEST_SRC([dentry_operations_d_automount], [
 		#include <linux/dcache.h>
-		static struct vfsmount *d_automount(struct path *p) { return NULL; }
+		struct vfsmount *d_automount(struct path *p) { return NULL; }
 		struct dentry_operations dops __attribute__ ((unused)) = {
 			.d_automount = d_automount,
 		};
--- a/config/kernel-bio.m4
+++ b/config/kernel-bio.m4
@ -247,7 +247,7 @@ dnl #
 AC_DEFUN([ZFS_AC_KERNEL_SRC_BIO_END_IO_T_ARGS], [
 	ZFS_LINUX_TEST_SRC([bio_end_io_t_args], [
 		#include <linux/bio.h>
-		static void wanted_end_io(struct bio *bio) { return; }
+		void wanted_end_io(struct bio *bio) { return; }
 		bio_end_io_t *end_io __attribute__ ((unused)) = wanted_end_io;
 	], [])
 ])
--- a/config/kernel-blk-queue.m4
+++ b/config/kernel-blk-queue.m4
@ -25,8 +25,6 @@ AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_PLUG], [
 dnl #
 dnl # 2.6.32 - 4.11: statically allocated bdi in request_queue
 dnl # 4.12: dynamically allocated bdi in request_queue
-dnl # 6.11: bdi no longer available through request_queue, so get it from
-dnl #       the gendisk attached to the queue
 dnl #
 AC_DEFUN([ZFS_AC_KERNEL_SRC_BLK_QUEUE_BDI], [
 	ZFS_LINUX_TEST_SRC([blk_queue_bdi], [
@ -49,30 +47,6 @@ AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_BDI], [
 	])
 ])

-AC_DEFUN([ZFS_AC_KERNEL_SRC_BLK_QUEUE_DISK_BDI], [
-	ZFS_LINUX_TEST_SRC([blk_queue_disk_bdi], [
-		#include <linux/blkdev.h>
-		#include <linux/backing-dev.h>
-	], [
-		struct request_queue q;
-		struct gendisk disk;
-		struct backing_dev_info bdi __attribute__ ((unused));
-		q.disk = &disk;
-		q.disk->bdi = &bdi;
-	])
-])
-
-AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_DISK_BDI], [
-	AC_MSG_CHECKING([whether backing_dev_info is available through queue gendisk])
-	ZFS_LINUX_TEST_RESULT([blk_queue_disk_bdi], [
-		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_BLK_QUEUE_DISK_BDI, 1,
-		    [backing_dev_info is available through queue gendisk])
-	],[
-		AC_MSG_RESULT(no)
-	])
-])
-
 dnl #
 dnl # 5.9: added blk_queue_update_readahead(),
 dnl # 5.15: renamed to disk_update_readahead()
@ -358,7 +332,7 @@ AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_MAX_HW_SECTORS], [
 	ZFS_LINUX_TEST_RESULT([blk_queue_max_hw_sectors], [
 		AC_MSG_RESULT(yes)
 	],[
-		AC_MSG_RESULT(no)
+		ZFS_LINUX_TEST_ERROR([blk_queue_max_hw_sectors])
 	])
 ])

@ -381,7 +355,7 @@ AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_MAX_SEGMENTS], [
 	ZFS_LINUX_TEST_RESULT([blk_queue_max_segments], [
 		AC_MSG_RESULT(yes)
 	], [
-		AC_MSG_RESULT(no)
+		ZFS_LINUX_TEST_ERROR([blk_queue_max_segments])
 	])
 ])

@ -403,14 +377,6 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_BLK_MQ], [
 		(void) blk_mq_alloc_tag_set(&tag_set);
 		return BLK_STS_OK;
 	], [])
-	ZFS_LINUX_TEST_SRC([blk_mq_rq_hctx], [
-		#include <linux/blk-mq.h>
-		#include <linux/blkdev.h>
-	], [
-		struct request rq = {0};
-		struct blk_mq_hw_ctx *hctx = NULL;
-		rq.mq_hctx = hctx;
-	], [])
 ])

 AC_DEFUN([ZFS_AC_KERNEL_BLK_MQ], [
@ -418,13 +384,6 @@ AC_DEFUN([ZFS_AC_KERNEL_BLK_MQ], [
 	ZFS_LINUX_TEST_RESULT([blk_mq], [
 		AC_MSG_RESULT(yes)
 		AC_DEFINE(HAVE_BLK_MQ, 1, [block multiqueue is available])
-		AC_MSG_CHECKING([whether block multiqueue hardware context is cached in struct request])
-		ZFS_LINUX_TEST_RESULT([blk_mq_rq_hctx], [
-			AC_MSG_RESULT(yes)
-			AC_DEFINE(HAVE_BLK_MQ_RQ_HCTX, 1, [block multiqueue hardware context is cached in struct request])
-		], [
-			AC_MSG_RESULT(no)
-		])
 	], [
 		AC_MSG_RESULT(no)
 	])
@ -433,7 +392,6 @@ AC_DEFUN([ZFS_AC_KERNEL_BLK_MQ], [
 AC_DEFUN([ZFS_AC_KERNEL_SRC_BLK_QUEUE], [
 	ZFS_AC_KERNEL_SRC_BLK_QUEUE_PLUG
 	ZFS_AC_KERNEL_SRC_BLK_QUEUE_BDI
-	ZFS_AC_KERNEL_SRC_BLK_QUEUE_DISK_BDI
 	ZFS_AC_KERNEL_SRC_BLK_QUEUE_UPDATE_READAHEAD
 	ZFS_AC_KERNEL_SRC_BLK_QUEUE_DISCARD
 	ZFS_AC_KERNEL_SRC_BLK_QUEUE_SECURE_ERASE
@ -448,7 +406,6 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_BLK_QUEUE], [
 AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE], [
 	ZFS_AC_KERNEL_BLK_QUEUE_PLUG
 	ZFS_AC_KERNEL_BLK_QUEUE_BDI
-	ZFS_AC_KERNEL_BLK_QUEUE_DISK_BDI
 	ZFS_AC_KERNEL_BLK_QUEUE_UPDATE_READAHEAD
 	ZFS_AC_KERNEL_BLK_QUEUE_DISCARD
 	ZFS_AC_KERNEL_BLK_QUEUE_SECURE_ERASE
--- a/config/kernel-blkdev.m4
+++ b/config/kernel-blkdev.m4
@ -35,45 +35,6 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_GET_BY_PATH_4ARG], [
 	])
 ])

-dnl #
-dnl # 6.8.x API change
-dnl # bdev_open_by_path() replaces blkdev_get_by_path()
-dnl #
-AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_OPEN_BY_PATH], [
-	ZFS_LINUX_TEST_SRC([bdev_open_by_path], [
-		#include <linux/fs.h>
-		#include <linux/blkdev.h>
-	], [
-		struct bdev_handle *bdh __attribute__ ((unused)) = NULL;
-		const char *path = "path";
-		fmode_t mode = 0;
-		void *holder = NULL;
-		struct blk_holder_ops h;
-
-		bdh = bdev_open_by_path(path, mode, holder, &h);
-	])
-])
-
-dnl #
-dnl # 6.9.x API change
-dnl # bdev_file_open_by_path() replaced bdev_open_by_path(),
-dnl # and returns struct file*
-dnl #
-AC_DEFUN([ZFS_AC_KERNEL_SRC_BDEV_FILE_OPEN_BY_PATH], [
-	ZFS_LINUX_TEST_SRC([bdev_file_open_by_path], [
-		#include <linux/fs.h>
-		#include <linux/blkdev.h>
-	], [
-		struct file *file __attribute__ ((unused)) = NULL;
-		const char *path = "path";
-		fmode_t mode = 0;
-		void *holder = NULL;
-		struct blk_holder_ops h;
-
-		file = bdev_file_open_by_path(path, mode, holder, &h);
-	])
-])
-
 AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_GET_BY_PATH], [
 	AC_MSG_CHECKING([whether blkdev_get_by_path() exists and takes 3 args])
 	ZFS_LINUX_TEST_RESULT([blkdev_get_by_path], [
@ -86,27 +47,10 @@ AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_GET_BY_PATH], [
 				[blkdev_get_by_path() exists and takes 4 args])
 			AC_MSG_RESULT(yes)
 		], [
-			AC_MSG_RESULT(no)
-			AC_MSG_CHECKING([whether bdev_open_by_path() exists])
-			ZFS_LINUX_TEST_RESULT([bdev_open_by_path], [
-				AC_DEFINE(HAVE_BDEV_OPEN_BY_PATH, 1,
-					[bdev_open_by_path() exists])
-				AC_MSG_RESULT(yes)
-			], [
-				AC_MSG_RESULT(no)
-				AC_MSG_CHECKING([whether bdev_file_open_by_path() exists])
-				ZFS_LINUX_TEST_RESULT([bdev_file_open_by_path], [
-					AC_DEFINE(HAVE_BDEV_FILE_OPEN_BY_PATH, 1,
-						[bdev_file_open_by_path() exists])
-					AC_MSG_RESULT(yes)
-				], [
-					AC_MSG_RESULT(no)
 			ZFS_LINUX_TEST_ERROR([blkdev_get_by_path()])
 		])
 	])
 ])
-	])
-])

 dnl #
 dnl # 6.5.x API change
@ -164,50 +108,18 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_PUT_HOLDER], [
 	])
 ])

-dnl #
-dnl # 6.8.x API change
-dnl # bdev_release() replaces blkdev_put()
-dnl #
-AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_RELEASE], [
-	ZFS_LINUX_TEST_SRC([bdev_release], [
-		#include <linux/fs.h>
-		#include <linux/blkdev.h>
-	], [
-		struct bdev_handle *bdh = NULL;
-		bdev_release(bdh);
-	])
-])
-
-dnl #
-dnl # 6.9.x API change
-dnl #
-dnl # bdev_release() now private, but because bdev_file_open_by_path() returns
-dnl # struct file*, we can just use fput(). So the blkdev_put test no longer
-dnl # fails if not found.
-dnl #
-
 AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_PUT], [
 	AC_MSG_CHECKING([whether blkdev_put() exists])
 	ZFS_LINUX_TEST_RESULT([blkdev_put], [
 		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_BLKDEV_PUT, 1, [blkdev_put() exists])
 	], [
-		AC_MSG_RESULT(no)
 		AC_MSG_CHECKING([whether blkdev_put() accepts void* as arg 2])
 		ZFS_LINUX_TEST_RESULT([blkdev_put_holder], [
 			AC_MSG_RESULT(yes)
 			AC_DEFINE(HAVE_BLKDEV_PUT_HOLDER, 1,
 				[blkdev_put() accepts void* as arg 2])
 		], [
-			AC_MSG_RESULT(no)
-			AC_MSG_CHECKING([whether bdev_release() exists])
-			ZFS_LINUX_TEST_RESULT([bdev_release], [
-				AC_MSG_RESULT(yes)
-				AC_DEFINE(HAVE_BDEV_RELEASE, 1,
-					[bdev_release() exists])
-			], [
-				AC_MSG_RESULT(no)
-			])
+			ZFS_LINUX_TEST_ERROR([blkdev_put()])
 		])
 	])
 ])
@ -534,30 +446,6 @@ AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_BDEV_WHOLE], [
 	])
 ])

-dnl #
-dnl # 5.16 API change
-dnl # Added bdev_nr_bytes() helper.
-dnl #
-AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_NR_BYTES], [
-	ZFS_LINUX_TEST_SRC([bdev_nr_bytes], [
-		#include <linux/blkdev.h>
-	],[
-		struct block_device *bdev = NULL;
-		loff_t nr_bytes __attribute__ ((unused)) = 0;
-		nr_bytes = bdev_nr_bytes(bdev);
-	])
-])
-
-AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_BDEV_NR_BYTES], [
-	AC_MSG_CHECKING([whether bdev_nr_bytes() is available])
-	ZFS_LINUX_TEST_RESULT([bdev_nr_bytes], [
-		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_BDEV_NR_BYTES, 1, [bdev_nr_bytes() is available])
-	],[
-		AC_MSG_RESULT(no)
-	])
-])
-
 dnl #
 dnl # 5.20 API change,
 dnl # Removed bdevname(), snprintf(.., %pg) should be used.
@ -585,29 +473,11 @@ AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_BDEVNAME], [
 ])

 dnl #
-dnl # TRIM support: discard and secure erase. We make use of asynchronous
-dnl #               functions when available.
+dnl # 5.19 API: blkdev_issue_secure_erase()
+dnl # 3.10 API: blkdev_issue_discard(..., BLKDEV_DISCARD_SECURE)
 dnl #
-dnl # 3.10:
-dnl #   sync discard:  blkdev_issue_discard(..., 0)
-dnl #   sync erase:    blkdev_issue_discard(..., BLKDEV_DISCARD_SECURE)
-dnl #   async discard: [not available]
-dnl #   async erase:   [not available]
-dnl #
-dnl # 4.7:
-dnl #   sync discard:  blkdev_issue_discard(..., 0)
-dnl #   sync erase:    blkdev_issue_discard(..., BLKDEV_DISCARD_SECURE)
-dnl #   async discard: __blkdev_issue_discard(..., 0)
-dnl #   async erase:   __blkdev_issue_discard(..., BLKDEV_DISCARD_SECURE)
-dnl #
-dnl # 5.19:
-dnl #   sync discard:  blkdev_issue_discard(...)
-dnl #   sync erase:    blkdev_issue_secure_erase(...)
-dnl #   async discard: __blkdev_issue_discard(...)
-dnl #   async erase:   [not available]
-dnl #
-AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_ISSUE_DISCARD], [
-	ZFS_LINUX_TEST_SRC([blkdev_issue_discard_noflags], [
+AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_ISSUE_SECURE_ERASE], [
+	ZFS_LINUX_TEST_SRC([blkdev_issue_secure_erase], [
 		#include <linux/blkdev.h>
 	],[
 		struct block_device *bdev = NULL;
@ -615,9 +485,10 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_ISSUE_DISCARD], [
 		sector_t nr_sects = 0;
 		int error __attribute__ ((unused));

-		error = blkdev_issue_discard(bdev,
+		error = blkdev_issue_secure_erase(bdev,
 		    sector, nr_sects, GFP_KERNEL);
 	])
+
 	ZFS_LINUX_TEST_SRC([blkdev_issue_discard_flags], [
 		#include <linux/blkdev.h>
 	],[
@ -630,77 +501,9 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_ISSUE_DISCARD], [
 		error = blkdev_issue_discard(bdev,
 		    sector, nr_sects, GFP_KERNEL, flags);
 	])
-	ZFS_LINUX_TEST_SRC([blkdev_issue_discard_async_noflags], [
-		#include <linux/blkdev.h>
-	],[
-		struct block_device *bdev = NULL;
-		sector_t sector = 0;
-		sector_t nr_sects = 0;
-		struct bio *biop = NULL;
-		int error __attribute__ ((unused));
-
-		error = __blkdev_issue_discard(bdev,
-		    sector, nr_sects, GFP_KERNEL, &biop);
-	])
-	ZFS_LINUX_TEST_SRC([blkdev_issue_discard_async_flags], [
-		#include <linux/blkdev.h>
-	],[
-		struct block_device *bdev = NULL;
-		sector_t sector = 0;
-		sector_t nr_sects = 0;
-		unsigned long flags = 0;
-		struct bio *biop = NULL;
-		int error __attribute__ ((unused));
-
-		error = __blkdev_issue_discard(bdev,
-		    sector, nr_sects, GFP_KERNEL, flags, &biop);
-	])
-	ZFS_LINUX_TEST_SRC([blkdev_issue_secure_erase], [
-		#include <linux/blkdev.h>
-	],[
-		struct block_device *bdev = NULL;
-		sector_t sector = 0;
-		sector_t nr_sects = 0;
-		int error __attribute__ ((unused));
-
-		error = blkdev_issue_secure_erase(bdev,
-		    sector, nr_sects, GFP_KERNEL);
-	])
 ])

-AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_ISSUE_DISCARD], [
-	AC_MSG_CHECKING([whether blkdev_issue_discard() is available])
-	ZFS_LINUX_TEST_RESULT([blkdev_issue_discard_noflags], [
-		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_BLKDEV_ISSUE_DISCARD_NOFLAGS, 1,
-		    [blkdev_issue_discard() is available])
-	],[
-		AC_MSG_RESULT(no)
-	])
-	AC_MSG_CHECKING([whether blkdev_issue_discard(flags) is available])
-	ZFS_LINUX_TEST_RESULT([blkdev_issue_discard_flags], [
-		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_BLKDEV_ISSUE_DISCARD_FLAGS, 1,
-		    [blkdev_issue_discard(flags) is available])
-	],[
-		AC_MSG_RESULT(no)
-	])
-	AC_MSG_CHECKING([whether __blkdev_issue_discard() is available])
-	ZFS_LINUX_TEST_RESULT([blkdev_issue_discard_async_noflags], [
-		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_BLKDEV_ISSUE_DISCARD_ASYNC_NOFLAGS, 1,
-		    [__blkdev_issue_discard() is available])
-	],[
-		AC_MSG_RESULT(no)
-	])
-	AC_MSG_CHECKING([whether __blkdev_issue_discard(flags) is available])
-	ZFS_LINUX_TEST_RESULT([blkdev_issue_discard_async_flags], [
-		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_BLKDEV_ISSUE_DISCARD_ASYNC_FLAGS, 1,
-		    [__blkdev_issue_discard(flags) is available])
-	],[
-		AC_MSG_RESULT(no)
-	])
+AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_ISSUE_SECURE_ERASE], [
 	AC_MSG_CHECKING([whether blkdev_issue_secure_erase() is available])
 	ZFS_LINUX_TEST_RESULT([blkdev_issue_secure_erase], [
 		AC_MSG_RESULT(yes)
@ -708,6 +511,15 @@ AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_ISSUE_DISCARD], [
 		    [blkdev_issue_secure_erase() is available])
 	],[
 		AC_MSG_RESULT(no)
+
+		AC_MSG_CHECKING([whether blkdev_issue_discard() is available])
+		ZFS_LINUX_TEST_RESULT([blkdev_issue_discard_flags], [
+			AC_MSG_RESULT(yes)
+			AC_DEFINE(HAVE_BLKDEV_ISSUE_DISCARD, 1,
+			    [blkdev_issue_discard() is available])
+		],[
+			ZFS_LINUX_TEST_ERROR([blkdev_issue_discard()])
+		])
 	])
 ])

@ -758,11 +570,8 @@ AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_BLK_STS_RESV_CONFLICT], [
 AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV], [
 	ZFS_AC_KERNEL_SRC_BLKDEV_GET_BY_PATH
 	ZFS_AC_KERNEL_SRC_BLKDEV_GET_BY_PATH_4ARG
-	ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_OPEN_BY_PATH
-	ZFS_AC_KERNEL_SRC_BDEV_FILE_OPEN_BY_PATH
 	ZFS_AC_KERNEL_SRC_BLKDEV_PUT
 	ZFS_AC_KERNEL_SRC_BLKDEV_PUT_HOLDER
-	ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_RELEASE
 	ZFS_AC_KERNEL_SRC_BLKDEV_REREAD_PART
 	ZFS_AC_KERNEL_SRC_BLKDEV_INVALIDATE_BDEV
 	ZFS_AC_KERNEL_SRC_BLKDEV_LOOKUP_BDEV
@ -771,9 +580,8 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV], [
 	ZFS_AC_KERNEL_SRC_BLKDEV_CHECK_DISK_CHANGE
 	ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_CHECK_MEDIA_CHANGE
 	ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_WHOLE
-	ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_NR_BYTES
 	ZFS_AC_KERNEL_SRC_BLKDEV_BDEVNAME
-	ZFS_AC_KERNEL_SRC_BLKDEV_ISSUE_DISCARD
+	ZFS_AC_KERNEL_SRC_BLKDEV_ISSUE_SECURE_ERASE
 	ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_KOBJ
 	ZFS_AC_KERNEL_SRC_BLKDEV_PART_TO_DEV
 	ZFS_AC_KERNEL_SRC_BLKDEV_DISK_CHECK_MEDIA_CHANGE
@ -792,10 +600,9 @@ AC_DEFUN([ZFS_AC_KERNEL_BLKDEV], [
 	ZFS_AC_KERNEL_BLKDEV_CHECK_DISK_CHANGE
 	ZFS_AC_KERNEL_BLKDEV_BDEV_CHECK_MEDIA_CHANGE
 	ZFS_AC_KERNEL_BLKDEV_BDEV_WHOLE
-	ZFS_AC_KERNEL_BLKDEV_BDEV_NR_BYTES
 	ZFS_AC_KERNEL_BLKDEV_BDEVNAME
 	ZFS_AC_KERNEL_BLKDEV_GET_ERESTARTSYS
-	ZFS_AC_KERNEL_BLKDEV_ISSUE_DISCARD
+	ZFS_AC_KERNEL_BLKDEV_ISSUE_SECURE_ERASE
 	ZFS_AC_KERNEL_BLKDEV_BDEV_KOBJ
 	ZFS_AC_KERNEL_BLKDEV_PART_TO_DEV
 	ZFS_AC_KERNEL_BLKDEV_DISK_CHECK_MEDIA_CHANGE
--- a/config/kernel-block-device-operations.m4
+++ b/config/kernel-block-device-operations.m4
@ -5,7 +5,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_BLOCK_DEVICE_OPERATIONS_CHECK_EVENTS], [
 	ZFS_LINUX_TEST_SRC([block_device_operations_check_events], [
 		#include <linux/blkdev.h>

-		static unsigned int blk_check_events(struct gendisk *disk,
+		unsigned int blk_check_events(struct gendisk *disk,
 		    unsigned int clearing) {
 			(void) disk, (void) clearing;
 			return (0);
@ -34,7 +34,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_BLOCK_DEVICE_OPERATIONS_RELEASE_VOID], [
 	ZFS_LINUX_TEST_SRC([block_device_operations_release_void], [
 		#include <linux/blkdev.h>

-		static void blk_release(struct gendisk *g, fmode_t mode) {
+		void blk_release(struct gendisk *g, fmode_t mode) {
 			(void) g, (void) mode;
 			return;
 		}
@ -56,7 +56,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_BLOCK_DEVICE_OPERATIONS_RELEASE_1ARG], [
 	ZFS_LINUX_TEST_SRC([block_device_operations_release_void_1arg], [
 		#include <linux/blkdev.h>

-		static void blk_release(struct gendisk *g) {
+		void blk_release(struct gendisk *g) {
 			(void) g;
 			return;
 		}
@ -96,7 +96,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_BLOCK_DEVICE_OPERATIONS_REVALIDATE_DISK], [
 	ZFS_LINUX_TEST_SRC([block_device_operations_revalidate_disk], [
 		#include <linux/blkdev.h>

-		static int blk_revalidate_disk(struct gendisk *disk) {
+		int blk_revalidate_disk(struct gendisk *disk) {
 			(void) disk;
 			return(0);
 		}
--- a/config/kernel-commit-metadata.m4
+++ b/config/kernel-commit-metadata.m4
@ -7,7 +7,7 @@ dnl #
 AC_DEFUN([ZFS_AC_KERNEL_SRC_COMMIT_METADATA], [
 	ZFS_LINUX_TEST_SRC([export_operations_commit_metadata], [
 		#include <linux/exportfs.h>
-		static int commit_metadata(struct inode *inode) { return 0; }
+		int commit_metadata(struct inode *inode) { return 0; }
 		static struct export_operations eops __attribute__ ((unused))={
 			.commit_metadata = commit_metadata,
 		};
--- a/config/kernel-current-time.m4
+++ b/config/kernel-current-time.m4
@ -2,15 +2,12 @@ dnl #
 dnl # 4.9, current_time() added
 dnl # 4.18, return type changed from timespec to timespec64
 dnl #
-dnl # Note that we don't care about the return type in this check. If we have
-dnl # to implement a fallback, we'll know we're <4.9, which was timespec.
-dnl #
 AC_DEFUN([ZFS_AC_KERNEL_SRC_CURRENT_TIME], [
 	ZFS_LINUX_TEST_SRC([current_time], [
 		#include <linux/fs.h>
 	], [
 		struct inode ip __attribute__ ((unused));
-		(void) current_time(&ip);
+		ip.i_atime = current_time(&ip);
 	])
 ])

--- a/config/kernel-dentry-operations.m4
+++ b/config/kernel-dentry-operations.m4
@ -98,7 +98,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_D_REVALIDATE_NAMEIDATA], [
 		#include <linux/dcache.h>
 		#include <linux/sched.h>

-		static int revalidate (struct dentry *dentry,
+		int revalidate (struct dentry *dentry,
 		    struct nameidata *nidata) { return 0; }

 		static const struct dentry_operations
--- a/config/kernel-dirty-inode.m4
+++ b/config/kernel-dirty-inode.m4
@ -8,7 +8,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_DIRTY_INODE], [
 	ZFS_LINUX_TEST_SRC([dirty_inode_with_flags], [
 		#include <linux/fs.h>

-		static void dirty_inode(struct inode *a, int b) { return; }
+		void dirty_inode(struct inode *a, int b) { return; }

 		static const struct super_operations
 		    sops __attribute__ ((unused)) = {
--- a/config/kernel-encode-fh-inode.m4
+++ b/config/kernel-encode-fh-inode.m4
@ -7,7 +7,7 @@ dnl #
 AC_DEFUN([ZFS_AC_KERNEL_SRC_ENCODE_FH_WITH_INODE], [
 	ZFS_LINUX_TEST_SRC([export_operations_encode_fh], [
 		#include <linux/exportfs.h>
-		static int encode_fh(struct inode *inode, __u32 *fh, int *max_len,
+		int encode_fh(struct inode *inode, __u32 *fh, int *max_len,
 		              struct inode *parent) { return 0; }
 		static struct export_operations eops __attribute__ ((unused))={
 			.encode_fh = encode_fh,
--- a/config/kernel-evict-inode.m4
+++ b/config/kernel-evict-inode.m4
@ -6,7 +6,7 @@ dnl #
 AC_DEFUN([ZFS_AC_KERNEL_SRC_EVICT_INODE], [
 	ZFS_LINUX_TEST_SRC([evict_inode], [
 		#include <linux/fs.h>
-		static void evict_inode (struct inode * t) { return; }
+		void evict_inode (struct inode * t) { return; }
 		static struct super_operations sops __attribute__ ((unused)) = {
 			.evict_inode = evict_inode,
 		};
--- a/config/kernel-fallocate.m4
+++ b/config/kernel-fallocate.m4
@ -11,7 +11,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_FALLOCATE], [
 	ZFS_LINUX_TEST_SRC([file_fallocate], [
 		#include <linux/fs.h>

-		static long test_fallocate(struct file *file, int mode,
+		long test_fallocate(struct file *file, int mode,
 		    loff_t offset, loff_t len) { return 0; }

 		static const struct file_operations
--- a/config/kernel-filemap.m4
+++ b/config/kernel-filemap.m4
@ -4,7 +4,6 @@ dnl #
 AC_DEFUN([ZFS_AC_KERNEL_SRC_FILEMAP], [
 	ZFS_LINUX_TEST_SRC([filemap_range_has_page], [
 		#include <linux/fs.h>
-		#include <linux/pagemap.h>
 	],[
 		struct address_space *mapping = NULL;
 		loff_t lstart = 0;
--- a/config/kernel-flush_dcache_page.m4
+++ b/config/kernel-flush_dcache_page.m4
@ -1,8 +1,7 @@
 dnl #
 dnl # Starting from Linux 5.13, flush_dcache_page() becomes an inline
-dnl # function and may indirectly referencing GPL-only symbols:
-dnl # on powerpc: cpu_feature_keys
-dnl # on riscv: PageHuge (added from 6.2)
+dnl # function and may indirectly referencing GPL-only cpu_feature_keys on
+dnl # powerpc
 dnl #

 dnl #
--- a/config/kernel-fpu.m4
+++ b/config/kernel-fpu.m4
@ -79,12 +79,6 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_FPU], [
 		__kernel_fpu_end();
 	], [], [ZFS_META_LICENSE])

-	ZFS_LINUX_TEST_SRC([kernel_neon], [
-		#include <asm/neon.h>
-	], [
-		kernel_neon_begin();
-		kernel_neon_end();
-	], [], [ZFS_META_LICENSE])
 ])

 AC_DEFUN([ZFS_AC_KERNEL_FPU], [
@ -111,20 +105,9 @@ AC_DEFUN([ZFS_AC_KERNEL_FPU], [
 			AC_DEFINE(KERNEL_EXPORTS_X86_FPU, 1,
 			    [kernel exports FPU functions])
 		],[
-			dnl #
-			dnl # ARM neon symbols (only on arm and arm64)
-			dnl # could be GPL-only on arm64 after Linux 6.2
-			dnl #
-			ZFS_LINUX_TEST_RESULT([kernel_neon_license],[
-				AC_MSG_RESULT(kernel_neon_*)
-				AC_DEFINE(HAVE_KERNEL_NEON, 1,
-				    [kernel has kernel_neon_* functions])
-			],[
-				# catch-all
 			AC_MSG_RESULT(internal)
 			AC_DEFINE(HAVE_KERNEL_FPU_INTERNAL, 1,
 			    [kernel fpu internal])
 		])
 	])
 ])
-])
--- a/config/kernel-fsync.m4
+++ b/config/kernel-fsync.m4
@ -5,7 +5,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_FSYNC], [
 	ZFS_LINUX_TEST_SRC([fsync_without_dentry], [
 		#include <linux/fs.h>

-		static int test_fsync(struct file *f, int x) { return 0; }
+		int test_fsync(struct file *f, int x) { return 0; }

 		static const struct file_operations
 		    fops __attribute__ ((unused)) = {
@ -16,7 +16,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_FSYNC], [
 	ZFS_LINUX_TEST_SRC([fsync_range], [
 		#include <linux/fs.h>

-		static int test_fsync(struct file *f, loff_t a, loff_t b, int c)
+		int test_fsync(struct file *f, loff_t a, loff_t b, int c)
 		    { return 0; }

 		static const struct file_operations
--- a/config/kernel-get-link.m4
+++ b/config/kernel-get-link.m4
@ -5,7 +5,7 @@ dnl #
 AC_DEFUN([ZFS_AC_KERNEL_SRC_GET_LINK], [
 	ZFS_LINUX_TEST_SRC([inode_operations_get_link], [
 		#include <linux/fs.h>
-		static const char *get_link(struct dentry *de, struct inode *ip,
+		const char *get_link(struct dentry *de, struct inode *ip,
 		    struct delayed_call *done) { return "symlink"; }
 		static struct inode_operations
 		     iops __attribute__ ((unused)) = {
@ -15,7 +15,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_GET_LINK], [

 	ZFS_LINUX_TEST_SRC([inode_operations_get_link_cookie], [
 		#include <linux/fs.h>
-		static const char *get_link(struct dentry *de, struct
+		const char *get_link(struct dentry *de, struct
 		    inode *ip, void **cookie) { return "symlink"; }
 		static struct inode_operations
 		     iops __attribute__ ((unused)) = {
@ -25,7 +25,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_GET_LINK], [

 	ZFS_LINUX_TEST_SRC([inode_operations_follow_link], [
 		#include <linux/fs.h>
-		static const char *follow_link(struct dentry *de,
+		const char *follow_link(struct dentry *de,
 		    void **cookie) { return "symlink"; }
 		static struct inode_operations
 		    iops __attribute__ ((unused)) = {
@ -35,7 +35,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_GET_LINK], [

 	ZFS_LINUX_TEST_SRC([inode_operations_follow_link_nameidata], [
 		#include <linux/fs.h>
-		static void *follow_link(struct dentry *de, struct
+		void *follow_link(struct dentry *de, struct
 		    nameidata *nd) { return (void *)NULL; }
 		static struct inode_operations
 		    iops __attribute__ ((unused)) = {
--- a/config/kernel-idmap_mnt_api.m4
+++ b/config/kernel-idmap_mnt_api.m4
@ -23,28 +23,3 @@ AC_DEFUN([ZFS_AC_KERNEL_IDMAP_MNT_API], [
        ])
 ])

-dnl #
-dnl # 6.8 decouples mnt_idmap from user_namespace. This is all internal
-dnl # to mnt_idmap so we can't detect it directly, but we detect a related
-dnl # change as use that as a signal.
-dnl #
-AC_DEFUN([ZFS_AC_KERNEL_SRC_IDMAP_NO_USERNS], [
-	ZFS_LINUX_TEST_SRC([idmap_no_userns], [
-		#include <linux/uidgid.h>
-	], [
-		struct uid_gid_map *map = NULL;
-		map_id_down(map, 0);
-	])
-])
-
-
-AC_DEFUN([ZFS_AC_KERNEL_IDMAP_NO_USERNS], [
-	AC_MSG_CHECKING([whether idmapped mounts have a user namespace])
-	ZFS_LINUX_TEST_RESULT([idmap_no_userns], [
-		AC_MSG_RESULT([yes])
-		AC_DEFINE(HAVE_IDMAP_NO_USERNS, 1,
-			[mnt_idmap does not have user_namespace])
-	], [
-		AC_MSG_RESULT([no])
-	])
-])
--- a/config/kernel-inode-create.m4
+++ b/config/kernel-inode-create.m4
@ -7,7 +7,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_CREATE], [
 		#include <linux/fs.h>
 		#include <linux/sched.h>

-		static int inode_create(struct mnt_idmap *idmap,
+		int inode_create(struct mnt_idmap *idmap,
 		    struct inode *inode ,struct dentry *dentry,
 		    umode_t umode, bool flag) { return 0; }

@ -25,7 +25,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_CREATE], [
 		#include <linux/fs.h>
 		#include <linux/sched.h>

-		static int inode_create(struct user_namespace *userns,
+		int inode_create(struct user_namespace *userns,
 		    struct inode *inode ,struct dentry *dentry,
 		    umode_t umode, bool flag) { return 0; }

@ -42,7 +42,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_CREATE], [
 		#include <linux/fs.h>
 		#include <linux/sched.h>

-		static int inode_create(struct inode *inode ,struct dentry *dentry,
+		int inode_create(struct inode *inode ,struct dentry *dentry,
 		    umode_t umode, bool flag) { return 0; }

 		static const struct inode_operations
--- a/config/kernel-inode-getattr.m4
+++ b/config/kernel-inode-getattr.m4
@ -7,7 +7,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_GETATTR], [
 	ZFS_LINUX_TEST_SRC([inode_operations_getattr_mnt_idmap], [
 		#include <linux/fs.h>

-		static int test_getattr(
+		int test_getattr(
 		    struct mnt_idmap *idmap,
 		    const struct path *p, struct kstat *k,
 		    u32 request_mask, unsigned int query_flags)
@ -28,7 +28,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_GETATTR], [
 	ZFS_LINUX_TEST_SRC([inode_operations_getattr_userns], [
 		#include <linux/fs.h>

-		static int test_getattr(
+		int test_getattr(
 			struct user_namespace *userns,
 		    const struct path *p, struct kstat *k,
 		    u32 request_mask, unsigned int query_flags)
@ -47,7 +47,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_GETATTR], [
 	ZFS_LINUX_TEST_SRC([inode_operations_getattr_path], [
 		#include <linux/fs.h>

-		static int test_getattr(
+		int test_getattr(
 		    const struct path *p, struct kstat *k,
 		    u32 request_mask, unsigned int query_flags)
 		    { return 0; }
@ -61,7 +61,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_GETATTR], [
 	ZFS_LINUX_TEST_SRC([inode_operations_getattr_vfsmount], [
 		#include <linux/fs.h>

-		static int test_getattr(
+		int test_getattr(
 		    struct vfsmount *mnt, struct dentry *d,
 		    struct kstat *k)
 		    { return 0; }
--- a/config/kernel-inode-lookup.m4
+++ b/config/kernel-inode-lookup.m4
@ -6,7 +6,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_LOOKUP_FLAGS], [
 		#include <linux/fs.h>
 		#include <linux/sched.h>

-		static struct dentry *inode_lookup(struct inode *inode,
+		struct dentry *inode_lookup(struct inode *inode,
 		    struct dentry *dentry, unsigned int flags) { return NULL; }

 		static const struct inode_operations iops
--- a/config/kernel-inode-permission.m4
+++ b/config/kernel-inode-permission.m4
@ -8,12 +8,12 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_PERMISSION], [
 		#include <linux/fs.h>
 		#include <linux/sched.h>

-		static int test_permission(struct mnt_idmap *idmap,
+		int inode_permission(struct mnt_idmap *idmap,
 		    struct inode *inode, int mask) { return 0; }

 		static const struct inode_operations
 			iops __attribute__ ((unused)) = {
-			.permission             = test_permission,
+			.permission             = inode_permission,
 		};
 	],[])

@ -25,12 +25,12 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_PERMISSION], [
 		#include <linux/fs.h>
 		#include <linux/sched.h>

-		static int test_permission(struct user_namespace *userns,
+		int inode_permission(struct user_namespace *userns,
 		    struct inode *inode, int mask) { return 0; }

 		static const struct inode_operations
 			iops __attribute__ ((unused)) = {
-			.permission		= test_permission,
+			.permission		= inode_permission,
 		};
 	],[])
 ])
--- a/config/kernel-inode-setattr.m4
+++ b/config/kernel-inode-setattr.m4
@ -7,7 +7,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_SETATTR], [
 	ZFS_LINUX_TEST_SRC([inode_operations_setattr_mnt_idmap], [
 		#include <linux/fs.h>

-		static int test_setattr(
+		int test_setattr(
 		    struct mnt_idmap *idmap,
 		    struct dentry *de, struct iattr *ia)
 		    { return 0; }
@ -27,7 +27,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_SETATTR], [
 	ZFS_LINUX_TEST_SRC([inode_operations_setattr_userns], [
 		#include <linux/fs.h>

-		static int test_setattr(
+		int test_setattr(
 		    struct user_namespace *userns,
 		    struct dentry *de, struct iattr *ia)
 		    { return 0; }
@ -41,7 +41,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_SETATTR], [
 	ZFS_LINUX_TEST_SRC([inode_operations_setattr], [
 		#include <linux/fs.h>

-		static int test_setattr(
+		int test_setattr(
 		    struct dentry *de, struct iattr *ia)
 		    { return 0; }

--- a/config/kernel-inode-times.m4
+++ b/config/kernel-inode-times.m4
@ -47,53 +47,11 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_TIMES], [
 		#include <linux/fs.h>
 	],[
 		struct inode ip;
-		struct timespec64 ts = {0};
+		struct timespec64 ts;

 		memset(&ip, 0, sizeof(ip));
 		inode_set_ctime_to_ts(&ip, ts);
 	])
-
-	dnl #
-	dnl # 6.7 API change
-	dnl # i_atime/i_mtime no longer directly accessible, must use
-	dnl # inode_get_mtime(ip), inode_set_mtime*(ip) to
-	dnl # read/write.
-	dnl #
-	ZFS_LINUX_TEST_SRC([inode_get_atime], [
-		#include <linux/fs.h>
-	],[
-		struct inode ip;
-
-		memset(&ip, 0, sizeof(ip));
-		inode_get_atime(&ip);
-	])
-	ZFS_LINUX_TEST_SRC([inode_get_mtime], [
-		#include <linux/fs.h>
-	],[
-		struct inode ip;
-
-		memset(&ip, 0, sizeof(ip));
-		inode_get_mtime(&ip);
-	])
-
-	ZFS_LINUX_TEST_SRC([inode_set_atime_to_ts], [
-		#include <linux/fs.h>
-	],[
-		struct inode ip;
-		struct timespec64 ts = {0};
-
-		memset(&ip, 0, sizeof(ip));
-		inode_set_atime_to_ts(&ip, ts);
-	])
-	ZFS_LINUX_TEST_SRC([inode_set_mtime_to_ts], [
-		#include <linux/fs.h>
-	],[
-		struct inode ip;
-		struct timespec64 ts = {0};
-
-		memset(&ip, 0, sizeof(ip));
-		inode_set_mtime_to_ts(&ip, ts);
-	])
 ])

 AC_DEFUN([ZFS_AC_KERNEL_INODE_TIMES], [
@ -132,40 +90,4 @@ AC_DEFUN([ZFS_AC_KERNEL_INODE_TIMES], [
 	],[
 		AC_MSG_RESULT(no)
 	])
-
-	AC_MSG_CHECKING([whether inode_get_atime() exists])
-	ZFS_LINUX_TEST_RESULT([inode_get_atime], [
-		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_INODE_GET_ATIME, 1,
-		    [inode_get_atime() exists in linux/fs.h])
-	],[
-		AC_MSG_RESULT(no)
-	])
-
-	AC_MSG_CHECKING([whether inode_set_atime_to_ts() exists])
-	ZFS_LINUX_TEST_RESULT([inode_set_atime_to_ts], [
-		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_INODE_SET_ATIME_TO_TS, 1,
-		    [inode_set_atime_to_ts() exists in linux/fs.h])
-	],[
-		AC_MSG_RESULT(no)
-	])
-
-	AC_MSG_CHECKING([whether inode_get_mtime() exists])
-	ZFS_LINUX_TEST_RESULT([inode_get_mtime], [
-		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_INODE_GET_MTIME, 1,
-		    [inode_get_mtime() exists in linux/fs.h])
-	],[
-		AC_MSG_RESULT(no)
-	])
-
-	AC_MSG_CHECKING([whether inode_set_mtime_to_ts() exists])
-	ZFS_LINUX_TEST_RESULT([inode_set_mtime_to_ts], [
-		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_INODE_SET_MTIME_TO_TS, 1,
-		    [inode_set_mtime_to_ts() exists in linux/fs.h])
-	],[
-		AC_MSG_RESULT(no)
-	])
 ])
--- a/config/kernel-kmap-local-page.m4
+++ b/config/kernel-kmap-local-page.m4
@ -1,23 +0,0 @@
-dnl #
-dnl # 5.11 API change
-dnl # kmap_atomic() was deprecated in favor of kmap_local_page()
-dnl #
-AC_DEFUN([ZFS_AC_KERNEL_SRC_KMAP_LOCAL_PAGE], [
-	ZFS_LINUX_TEST_SRC([kmap_local_page], [
-		#include <linux/highmem.h>
-	],[
-		struct page page;
-		kmap_local_page(&page);
-	])
-])
-
-AC_DEFUN([ZFS_AC_KERNEL_KMAP_LOCAL_PAGE], [
-	AC_MSG_CHECKING([whether kmap_local_page exists])
-	ZFS_LINUX_TEST_RESULT([kmap_local_page], [
-		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_KMAP_LOCAL_PAGE, 1,
-		    [kernel has kmap_local_page])
-	],[
-		AC_MSG_RESULT(no)
-	])
-])
--- a/config/kernel-make-request-fn.m4
+++ b/config/kernel-make-request-fn.m4
@ -4,7 +4,7 @@ dnl #
 AC_DEFUN([ZFS_AC_KERNEL_SRC_MAKE_REQUEST_FN], [
 	ZFS_LINUX_TEST_SRC([make_request_fn_void], [
 		#include <linux/blkdev.h>
-		static void make_request(struct request_queue *q,
+		void make_request(struct request_queue *q,
 		    struct bio *bio) { return; }
 	],[
 		blk_queue_make_request(NULL, &make_request);
@ -12,7 +12,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_MAKE_REQUEST_FN], [

 	ZFS_LINUX_TEST_SRC([make_request_fn_blk_qc_t], [
 		#include <linux/blkdev.h>
-		static blk_qc_t make_request(struct request_queue *q,
+		blk_qc_t make_request(struct request_queue *q,
 		    struct bio *bio) { return (BLK_QC_T_NONE); }
 	],[
 		blk_queue_make_request(NULL, &make_request);
@ -20,7 +20,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_MAKE_REQUEST_FN], [

 	ZFS_LINUX_TEST_SRC([blk_alloc_queue_request_fn], [
 		#include <linux/blkdev.h>
-		static blk_qc_t make_request(struct request_queue *q,
+		blk_qc_t make_request(struct request_queue *q,
 		    struct bio *bio) { return (BLK_QC_T_NONE); }
 	],[
 		struct request_queue *q __attribute__ ((unused));
@ -29,7 +29,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_MAKE_REQUEST_FN], [

 	ZFS_LINUX_TEST_SRC([blk_alloc_queue_request_fn_rh], [
 		#include <linux/blkdev.h>
-		static blk_qc_t make_request(struct request_queue *q,
+		blk_qc_t make_request(struct request_queue *q,
 		    struct bio *bio) { return (BLK_QC_T_NONE); }
 	],[
 		struct request_queue *q __attribute__ ((unused));
@ -50,21 +50,6 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_MAKE_REQUEST_FN], [
 		disk = blk_alloc_disk(NUMA_NO_NODE);
 	])

-	ZFS_LINUX_TEST_SRC([blk_alloc_disk_2arg], [
-		#include <linux/blkdev.h>
-	],[
-		struct queue_limits *lim = NULL;
-		struct gendisk *disk  __attribute__ ((unused));
-		disk = blk_alloc_disk(lim, NUMA_NO_NODE);
-	])
-
-	ZFS_LINUX_TEST_SRC([blkdev_queue_limits_features], [
-		#include <linux/blkdev.h>
-	],[
-		struct queue_limits *lim = NULL;
-		lim->features = 0;
-	])
-
 	ZFS_LINUX_TEST_SRC([blk_cleanup_disk], [
 		#include <linux/blkdev.h>
 	],[
@ -111,45 +96,6 @@ AC_DEFUN([ZFS_AC_KERNEL_MAKE_REQUEST_FN], [
 		], [
 			AC_MSG_RESULT(no)
 		])
-
-		dnl #
-		dnl # Linux 6.9 API Change:
-		dnl # blk_alloc_queue() takes a nullable queue_limits arg.
-		dnl #
-		AC_MSG_CHECKING([whether blk_alloc_disk() exists and takes 2 args])
-		ZFS_LINUX_TEST_RESULT([blk_alloc_disk_2arg], [
-			AC_MSG_RESULT(yes)
-			AC_DEFINE([HAVE_BLK_ALLOC_DISK_2ARG], 1, [blk_alloc_disk() exists and takes 2 args])
-
-			dnl #
-			dnl # Linux 6.11 API change:
-			dnl # struct queue_limits gains a 'features' field,
-			dnl # used to set flushing options
-			dnl #
-			AC_MSG_CHECKING([whether struct queue_limits has a features field])
-			ZFS_LINUX_TEST_RESULT([blkdev_queue_limits_features], [
-				AC_MSG_RESULT(yes)
-				AC_DEFINE([HAVE_BLKDEV_QUEUE_LIMITS_FEATURES], 1,
-				    [struct queue_limits has a features field])
-			], [
-				AC_MSG_RESULT(no)
-			])
-
-			dnl #
-			dnl # 5.20 API change,
-			dnl # Removed blk_cleanup_disk(), put_disk() should be used.
-			dnl #
-			AC_MSG_CHECKING([whether blk_cleanup_disk() exists])
-			ZFS_LINUX_TEST_RESULT([blk_cleanup_disk], [
-				AC_MSG_RESULT(yes)
-				AC_DEFINE([HAVE_BLK_CLEANUP_DISK], 1,
-				    [blk_cleanup_disk() exists])
-			], [
-				AC_MSG_RESULT(no)
-			])
-		], [
-			AC_MSG_RESULT(no)
-		])
 	],[
 		AC_MSG_RESULT(no)

--- a/config/kernel-mkdir.m4
+++ b/config/kernel-mkdir.m4
@ -9,7 +9,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_MKDIR], [
 	ZFS_LINUX_TEST_SRC([mkdir_mnt_idmap], [
 		#include <linux/fs.h>

-		static int mkdir(struct mnt_idmap *idmap,
+		int mkdir(struct mnt_idmap *idmap,
 			struct inode *inode, struct dentry *dentry,
 			umode_t umode) { return 0; }
 		static const struct inode_operations
@ -26,7 +26,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_MKDIR], [
 	ZFS_LINUX_TEST_SRC([mkdir_user_namespace], [
 		#include <linux/fs.h>

-		static int mkdir(struct user_namespace *userns,
+		int mkdir(struct user_namespace *userns,
 			struct inode *inode, struct dentry *dentry,
 		    umode_t umode) { return 0; }

@ -47,7 +47,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_MKDIR], [
 	ZFS_LINUX_TEST_SRC([inode_operations_mkdir], [
 		#include <linux/fs.h>

-		static int mkdir(struct inode *inode, struct dentry *dentry,
+		int mkdir(struct inode *inode, struct dentry *dentry,
 		    umode_t umode) { return 0; }

 		static const struct inode_operations
--- a/config/kernel-mknod.m4
+++ b/config/kernel-mknod.m4
@ -7,7 +7,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_MKNOD], [
 		#include <linux/fs.h>
 		#include <linux/sched.h>

-		static int tmp_mknod(struct mnt_idmap *idmap,
+		int tmp_mknod(struct mnt_idmap *idmap,
 		    struct inode *inode ,struct dentry *dentry,
 		    umode_t u, dev_t d) { return 0; }

@ -25,7 +25,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_MKNOD], [
 		#include <linux/fs.h>
 		#include <linux/sched.h>

-		static int tmp_mknod(struct user_namespace *userns,
+		int tmp_mknod(struct user_namespace *userns,
 		    struct inode *inode ,struct dentry *dentry,
 		    umode_t u, dev_t d) { return 0; }

--- a/config/kernel-mm-pagemap.m4
+++ b/config/kernel-mm-pagemap.m4
@ -1,36 +0,0 @@
-AC_DEFUN([ZFS_AC_KERNEL_SRC_MM_PAGE_SIZE], [
-	ZFS_LINUX_TEST_SRC([page_size], [
-		#include <linux/mm.h>
-	],[
-		unsigned long s;
-		s = page_size(NULL);
-	])
-])
-AC_DEFUN([ZFS_AC_KERNEL_MM_PAGE_SIZE], [
-	AC_MSG_CHECKING([whether page_size() is available])
-	ZFS_LINUX_TEST_RESULT([page_size], [
-		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_MM_PAGE_SIZE, 1, [page_size() is available])
-	],[
-		AC_MSG_RESULT(no)
-	])
-])
-
-
-AC_DEFUN([ZFS_AC_KERNEL_SRC_MM_PAGE_MAPPING], [
-	ZFS_LINUX_TEST_SRC([page_mapping], [
-		#include <linux/pagemap.h>
-	],[
-		struct page *p = NULL;
-		struct address_space *m = page_mapping(NULL);
-	])
-])
-AC_DEFUN([ZFS_AC_KERNEL_MM_PAGE_MAPPING], [
-	AC_MSG_CHECKING([whether page_mapping() is available])
-	ZFS_LINUX_TEST_RESULT([page_mapping], [
-		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_MM_PAGE_MAPPING, 1, [page_mapping() is available])
-	],[
-		AC_MSG_RESULT(no)
-	])
-])
--- a/config/kernel-proc-operations.m4
+++ b/config/kernel-proc-operations.m4
@ -7,14 +7,14 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_PROC_OPERATIONS], [
 	ZFS_LINUX_TEST_SRC([proc_ops_struct], [
 		#include <linux/proc_fs.h>

-		static int test_open(struct inode *ip, struct file *fp) { return 0; }
-		static ssize_t test_read(struct file *fp, char __user *ptr,
+		int test_open(struct inode *ip, struct file *fp) { return 0; }
+		ssize_t test_read(struct file *fp, char __user *ptr,
 		    size_t size, loff_t *offp) { return 0; }
-		static ssize_t test_write(struct file *fp, const char __user *ptr,
+		ssize_t test_write(struct file *fp, const char __user *ptr,
 		    size_t size, loff_t *offp) { return 0; }
-		static loff_t test_lseek(struct file *fp, loff_t off, int flag)
+		loff_t test_lseek(struct file *fp, loff_t off, int flag)
 		    { return 0; }
-		static int test_release(struct inode *ip, struct file *fp)
+		int test_release(struct inode *ip, struct file *fp)
 		    { return 0; }

 		const struct proc_ops test_ops __attribute__ ((unused)) = {
--- a/config/kernel-put-link.m4
+++ b/config/kernel-put-link.m4
@ -4,7 +4,7 @@ dnl #
 AC_DEFUN([ZFS_AC_KERNEL_SRC_PUT_LINK], [
 	ZFS_LINUX_TEST_SRC([put_link_cookie], [
 		#include <linux/fs.h>
-		static void put_link(struct inode *ip, void *cookie)
+		void put_link(struct inode *ip, void *cookie)
 		    { return; }
 		static struct inode_operations
 		    iops __attribute__ ((unused)) = {
@ -14,7 +14,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_PUT_LINK], [

 	ZFS_LINUX_TEST_SRC([put_link_nameidata], [
 		#include <linux/fs.h>
-		static void put_link(struct dentry *de, struct
+		void put_link(struct dentry *de, struct
 		    nameidata *nd, void *ptr) { return; }
 		static struct inode_operations
 		    iops __attribute__ ((unused)) = {
--- a/config/kernel-register_sysctl_table.m4
+++ b/config/kernel-register_sysctl_table.m4
@ -25,62 +25,3 @@ AC_DEFUN([ZFS_AC_KERNEL_REGISTER_SYSCTL_TABLE], [
 		AC_MSG_RESULT([no])
 	])
 ])
-
-dnl #
-dnl # Linux 6.11 register_sysctl() enforces that sysctl tables no longer
-dnl # supply a sentinel end-of-table element. 6.6 introduces
-dnl # register_sysctl_sz() to enable callers to choose, so we use it if
-dnl # available for backward compatibility.
-dnl #
-AC_DEFUN([ZFS_AC_KERNEL_SRC_REGISTER_SYSCTL_SZ], [
-	ZFS_LINUX_TEST_SRC([has_register_sysctl_sz], [
-		#include <linux/sysctl.h>
-	],[
-		struct ctl_table test_table[] __attribute__((unused)) = {0};
-		register_sysctl_sz("", test_table, 0);
-	])
-])
-
-AC_DEFUN([ZFS_AC_KERNEL_REGISTER_SYSCTL_SZ], [
-	AC_MSG_CHECKING([whether register_sysctl_sz exists])
-	ZFS_LINUX_TEST_RESULT([has_register_sysctl_sz], [
-		AC_MSG_RESULT([yes])
-		AC_DEFINE(HAVE_REGISTER_SYSCTL_SZ, 1,
-			[register_sysctl_sz exists])
-	],[
-		AC_MSG_RESULT([no])
-	])
-])
-
-dnl #
-dnl # Linux 6.11 makes const the ctl_table arg of proc_handler
-dnl #
-AC_DEFUN([ZFS_AC_KERNEL_SRC_PROC_HANDLER_CTL_TABLE_CONST], [
-	ZFS_LINUX_TEST_SRC([has_proc_handler_ctl_table_const], [
-		#include <linux/sysctl.h>
-
-		static int test_handler(
-		    const struct ctl_table *ctl __attribute((unused)),
-		    int write __attribute((unused)),
-		    void *buffer __attribute((unused)),
-		    size_t *lenp __attribute((unused)),
-		    loff_t *ppos __attribute((unused)))
-		{
-			return (0);
-		}
-	], [
-		proc_handler *ph __attribute((unused)) =
-		    &test_handler;
-	])
-])
-
-AC_DEFUN([ZFS_AC_KERNEL_PROC_HANDLER_CTL_TABLE_CONST], [
-	AC_MSG_CHECKING([whether proc_handler ctl_table arg is const])
-	ZFS_LINUX_TEST_RESULT([has_proc_handler_ctl_table_const], [
-		AC_MSG_RESULT([yes])
-		AC_DEFINE(HAVE_PROC_HANDLER_CTL_TABLE_CONST, 1,
-		    [proc_handler ctl_table arg is const])
-	], [
-		AC_MSG_RESULT([no])
-	])
-])
--- a/config/kernel-rename.m4
+++ b/config/kernel-rename.m4
@ -8,7 +8,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_RENAME], [
 	dnl #
 	ZFS_LINUX_TEST_SRC([inode_operations_rename2], [
 		#include <linux/fs.h>
-		static int rename2_fn(struct inode *sip, struct dentry *sdp,
+		int rename2_fn(struct inode *sip, struct dentry *sdp,
 			struct inode *tip, struct dentry *tdp,
 			unsigned int flags) { return 0; }

@ -26,7 +26,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_RENAME], [
 	dnl #
 	ZFS_LINUX_TEST_SRC([inode_operations_rename_flags], [
 		#include <linux/fs.h>
-		static int rename_fn(struct inode *sip, struct dentry *sdp,
+		int rename_fn(struct inode *sip, struct dentry *sdp,
 			struct inode *tip, struct dentry *tdp,
 			unsigned int flags) { return 0; }

@ -44,7 +44,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_RENAME], [
 	dnl #
 	ZFS_LINUX_TEST_SRC([dir_inode_operations_wrapper_rename2], [
 		#include <linux/fs.h>
-		static int rename2_fn(struct inode *sip, struct dentry *sdp,
+		int rename2_fn(struct inode *sip, struct dentry *sdp,
 			struct inode *tip, struct dentry *tdp,
 			unsigned int flags) { return 0; }

@ -62,7 +62,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_RENAME], [
 	dnl #
 	ZFS_LINUX_TEST_SRC([inode_operations_rename_userns], [
 		#include <linux/fs.h>
-		static int rename_fn(struct user_namespace *user_ns, struct inode *sip,
+		int rename_fn(struct user_namespace *user_ns, struct inode *sip,
 			struct dentry *sdp, struct inode *tip, struct dentry *tdp,
 			unsigned int flags) { return 0; }

@ -77,7 +77,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_RENAME], [
 	dnl #
 	ZFS_LINUX_TEST_SRC([inode_operations_rename_mnt_idmap], [
 		#include <linux/fs.h>
-		static int rename_fn(struct mnt_idmap *idmap, struct inode *sip,
+		int rename_fn(struct mnt_idmap *idmap, struct inode *sip,
 			struct dentry *sdp, struct inode *tip, struct dentry *tdp,
 			unsigned int flags) { return 0; }

--- a/config/kernel-show-options.m4
+++ b/config/kernel-show-options.m4
@ -5,7 +5,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_SHOW_OPTIONS], [
 	ZFS_LINUX_TEST_SRC([super_operations_show_options], [
 		#include <linux/fs.h>

-		static int show_options(struct seq_file * x, struct dentry * y) {
+		int show_options(struct seq_file * x, struct dentry * y) {
 			return 0;
 		};

--- a/config/kernel-shrink.m4
+++ b/config/kernel-shrink.m4
@ -8,6 +8,9 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_SUPER_BLOCK_S_SHRINK], [
 	ZFS_LINUX_TEST_SRC([super_block_s_shrink], [
 		#include <linux/fs.h>

+		int shrink(struct shrinker *s, struct shrink_control *sc)
+		    { return 0; }
+
 		static const struct super_block
 		    sb __attribute__ ((unused)) = {
 			.s_shrink.seeks = DEFAULT_SEEKS,
@ -16,46 +19,14 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_SUPER_BLOCK_S_SHRINK], [
 	],[])
 ])

-dnl #
-dnl # 6.7 API change
-dnl # s_shrink is now a pointer.
-dnl #
-AC_DEFUN([ZFS_AC_KERNEL_SRC_SUPER_BLOCK_S_SHRINK_PTR], [
-	ZFS_LINUX_TEST_SRC([super_block_s_shrink_ptr], [
-		#include <linux/fs.h>
-		static unsigned long shrinker_cb(struct shrinker *shrink,
-		    struct shrink_control *sc) { return 0; }
-		static struct shrinker shrinker = {
-			.count_objects = shrinker_cb,
-			.scan_objects = shrinker_cb,
-			.seeks = DEFAULT_SEEKS,
-		};
-		static const struct super_block
-		    sb __attribute__ ((unused)) = {
-			.s_shrink = &shrinker,
-		};
-	],[])
-])
-
 AC_DEFUN([ZFS_AC_KERNEL_SUPER_BLOCK_S_SHRINK], [
 	AC_MSG_CHECKING([whether super_block has s_shrink])
 	ZFS_LINUX_TEST_RESULT([super_block_s_shrink], [
 		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_SUPER_BLOCK_S_SHRINK, 1,
-			[have super_block s_shrink])
 	],[
-		AC_MSG_RESULT(no)
-		AC_MSG_CHECKING([whether super_block has s_shrink pointer])
-		ZFS_LINUX_TEST_RESULT([super_block_s_shrink_ptr], [
-			AC_MSG_RESULT(yes)
-			AC_DEFINE(HAVE_SUPER_BLOCK_S_SHRINK_PTR, 1,
-				[have super_block s_shrink pointer])
-		],[
-			AC_MSG_RESULT(no)
 		ZFS_LINUX_TEST_ERROR([sb->s_shrink()])
 	])
 ])
-])

 dnl #
 dnl # 3.12 API change
@ -86,7 +57,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SHRINK_CONTROL_HAS_NID], [
 AC_DEFUN([ZFS_AC_KERNEL_SRC_REGISTER_SHRINKER_VARARG], [
 	ZFS_LINUX_TEST_SRC([register_shrinker_vararg], [
 		#include <linux/mm.h>
-		static unsigned long shrinker_cb(struct shrinker *shrink,
+		unsigned long shrinker_cb(struct shrinker *shrink,
 		    struct shrink_control *sc) { return 0; }
 	],[
 		struct shrinker cache_shrinker = {
@ -101,7 +72,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_REGISTER_SHRINKER_VARARG], [
 AC_DEFUN([ZFS_AC_KERNEL_SRC_SHRINKER_CALLBACK], [
 	ZFS_LINUX_TEST_SRC([shrinker_cb_shrink_control], [
 		#include <linux/mm.h>
-		static int shrinker_cb(struct shrinker *shrink,
+		int shrinker_cb(struct shrinker *shrink,
 		    struct shrink_control *sc) { return 0; }
 	],[
 		struct shrinker cache_shrinker = {
@ -113,7 +84,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_SHRINKER_CALLBACK], [

 	ZFS_LINUX_TEST_SRC([shrinker_cb_shrink_control_split], [
 		#include <linux/mm.h>
-		static unsigned long shrinker_cb(struct shrinker *shrink,
+		unsigned long shrinker_cb(struct shrinker *shrink,
 		    struct shrink_control *sc) { return 0; }
 	],[
 		struct shrinker cache_shrinker = {
@ -125,25 +96,6 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_SHRINKER_CALLBACK], [
 	])
 ])

-dnl #
-dnl # 6.7 API change
-dnl # register_shrinker has been replaced by shrinker_register.
-dnl #
-AC_DEFUN([ZFS_AC_KERNEL_SRC_SHRINKER_REGISTER], [
-	ZFS_LINUX_TEST_SRC([shrinker_register], [
-		#include <linux/shrinker.h>
-		static unsigned long shrinker_cb(struct shrinker *shrink,
-		    struct shrink_control *sc) { return 0; }
-	],[
-		struct shrinker cache_shrinker = {
-			.count_objects = shrinker_cb,
-			.scan_objects = shrinker_cb,
-			.seeks = DEFAULT_SEEKS,
-		};
-		shrinker_register(&cache_shrinker);
-	])
-])
-
 AC_DEFUN([ZFS_AC_KERNEL_SHRINKER_CALLBACK],[
 	dnl #
 	dnl # 6.0 API change
@ -181,40 +133,18 @@ AC_DEFUN([ZFS_AC_KERNEL_SHRINKER_CALLBACK],[
 			dnl # cs->shrink() is logically split in to
 			dnl # cs->count_objects() and cs->scan_objects()
 			dnl #
-			AC_MSG_CHECKING(
-			    [whether cs->count_objects callback exists])
+			AC_MSG_CHECKING([if cs->count_objects callback exists])
 			ZFS_LINUX_TEST_RESULT(
 				[shrinker_cb_shrink_control_split],[
 					AC_MSG_RESULT(yes)
 					AC_DEFINE(HAVE_SPLIT_SHRINKER_CALLBACK, 1,
 						[cs->count_objects exists])
 			],[
-				AC_MSG_RESULT(no)
-
-				AC_MSG_CHECKING(
-				    [whether shrinker_register exists])
-				ZFS_LINUX_TEST_RESULT([shrinker_register], [
-					AC_MSG_RESULT(yes)
-					AC_DEFINE(HAVE_SHRINKER_REGISTER, 1,
-					    [shrinker_register exists])
-
-					dnl # We assume that the split shrinker
-					dnl # callback exists if
-					dnl # shrinker_register() exists,
-					dnl # because the latter is a much more
-					dnl # recent addition, and the macro
-					dnl # test for shrinker_register() only
-					dnl # works if the callback is split
-					AC_DEFINE(HAVE_SPLIT_SHRINKER_CALLBACK,
-					    1, [cs->count_objects exists])
-				],[
-					AC_MSG_RESULT(no)
 					ZFS_LINUX_TEST_ERROR([shrinker])
 			])
 		])
 	])
 ])
-])

 dnl #
 dnl # 2.6.39 API change,
@ -244,12 +174,10 @@ AC_DEFUN([ZFS_AC_KERNEL_SHRINK_CONTROL_STRUCT], [

 AC_DEFUN([ZFS_AC_KERNEL_SRC_SHRINKER], [
 	ZFS_AC_KERNEL_SRC_SUPER_BLOCK_S_SHRINK
-	ZFS_AC_KERNEL_SRC_SUPER_BLOCK_S_SHRINK_PTR
 	ZFS_AC_KERNEL_SRC_SHRINK_CONTROL_HAS_NID
 	ZFS_AC_KERNEL_SRC_SHRINKER_CALLBACK
 	ZFS_AC_KERNEL_SRC_SHRINK_CONTROL_STRUCT
 	ZFS_AC_KERNEL_SRC_REGISTER_SHRINKER_VARARG
-	ZFS_AC_KERNEL_SRC_SHRINKER_REGISTER
 ])

 AC_DEFUN([ZFS_AC_KERNEL_SHRINKER], [
--- a/Show More
+++ b/Show More