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Brian Behlendorf 2915930f89 Linux 5.13 compat: retry zvol_open() when contended 
Due to a possible lock inversion the zvol open call path on Linux
needs to be able to retry in the case where the spa_namespace_lock
cannot be acquired.

For Linux 5.12 an older kernel this was accomplished by returning
-ERESTARTSYS from zvol_open() to request that blkdev_get() drop
the bdev->bd_mutex lock, reaquire it, then call the open callback
again.  However, as of the 5.13 kernel this behavior was removed.

Therefore, for 5.12 and older kernels we preserved the existing
retry logic, but for 5.13 and newer kernels we retry internally in
zvol_open().  This should always succeed except in the case where
a pool's vdev are layed on zvols, in which case it may fail.  To
handle this case vdev_disk_open() has been updated to retry when
opening a device when -ERESTARTSYS is returned.

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Tony Nguyen <tony.nguyen@delphix.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #12301
Closes #12759
 		2021-12-06 13:40:59 -08:00
..
.gitignore Prepare SPL repo to merge with ZFS repo 2018-05-29 14:51:39 -07:00
Abigail.am Library ABI tracking with abigail 2020-11-17 20:29:02 +00:00
CppCheck.am cppcheck: integrete cppcheck 2021-06-23 13:22:15 -07:00
Rules.am Use fallthrough macro 2021-11-12 15:24:36 -08:00
Substfiles.am Centralize variable substitution 2020-07-14 17:33:44 -07:00
always-arch.m4 Add FreeBSD support to OpenZFS 2020-04-14 11:36:28 -07:00
always-compiler-options.m4 Use fallthrough macro 2021-11-12 15:24:36 -08:00
always-cppcheck.m4 cppcheck: integrete cppcheck 2021-06-23 13:22:15 -07:00
always-python.m4 Autoconf 2.70 compatibility 2021-01-05 10:33:55 -08:00
always-pyzfs.m4 Correct a flaw in the Python 3 version checking 2021-11-12 15:24:36 -08:00
always-sed.m4 Add compatibility for busybox mktemp 2020-12-23 13:08:30 -08:00
always-system.m4 OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
ax_code_coverage.m4 Import ZStandard v1.4.5 2020-08-20 10:30:06 -07:00
ax_count_cpus.m4 cppcheck: integrete cppcheck 2021-06-23 13:22:15 -07:00
ax_python_devel.m4 Correct a flaw in the Python 3 version checking 2021-11-12 15:24:36 -08:00
ax_restore_flags.m4 config: better libtirpc detection 2019-03-02 16:19:05 -08:00
ax_save_flags.m4 config: better libtirpc detection 2019-03-02 16:19:05 -08:00
config.awk Prepare SPL repo to merge with ZFS repo 2018-05-29 14:51:39 -07:00
config.rpath Add config.rpath for AM_GNU_GETTEXT 2020-07-10 14:26:12 -07:00
deb.am Add compatibility for busybox mktemp 2020-12-23 13:08:30 -08:00
find_system_library.m4 Spruce up pkg-config files for libzfs/libzfs_core 2020-09-09 10:26:01 -07:00
gettext.m4 config: libintl/libiconv for gettext() detection 2019-04-19 12:09:29 -07:00
host-cpu-c-abi.m4 config: libintl/libiconv for gettext() detection 2019-04-19 12:09:29 -07:00
iconv.m4 Clarify comments in config/*.m4, vdev_geom.c, zfs_allow_*.ksh 2020-06-22 09:46:37 -07:00
intlmacosx.m4 config: libintl/libiconv for gettext() detection 2019-04-19 12:09:29 -07:00
kernel-access-ok-type.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-acl.m4 Linux 5.15 compat: get_acl() 2021-09-22 15:19:08 -07:00
kernel-aio-fsync.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-automount.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-bdi.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-bio.m4 Linux 5.16 compat: submit_bio() 2021-11-12 16:31:55 -08:00
kernel-bio_max_segs.m4 Linux 5.12 update: bio_max_segs() replaces BIO_MAX_PAGES 2021-06-23 13:22:15 -07:00
kernel-blk-queue.m4 Linux 5.15 compat: block device readahead 2021-09-22 15:19:08 -07:00
kernel-blkdev.m4 Linux 5.13 compat: retry zvol_open() when contended 2021-12-06 13:40:59 -08:00
kernel-block-device-operations.m4 linux 5.13 compat: bdevops->revalidate_disk() removed (#12122) 2021-06-23 13:22:15 -07:00
kernel-clear-inode.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-commit-metadata.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-config-defined.m4 Linux 5.11 compat: conftest 2021-01-05 10:25:59 -08:00
kernel-current-time.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-declare-event-class.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-dentry-operations.m4 Partially revert 5a6ac4c 2019-11-18 13:05:56 -08:00
kernel-dirty-inode.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-discard-granularity.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-encode-fh-inode.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-evict-inode.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-fallocate.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-file-dentry.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-file-inode.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-fmode-t.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-follow-down-one.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-fpu.m4 Linux 5.11 compat: conftest 2021-01-05 10:25:59 -08:00
kernel-fst-mount.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-fsync.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-generic_fillattr.m4 Linux 5.12 compat: idmapped mounts 2021-06-23 13:22:15 -07:00
kernel-generic_io_acct.m4 Linux 5.12 compat: replace bio_*_io_acct with disk_*_io_acct 2021-03-05 12:57:54 -08:00
kernel-generic_readlink.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-get-disk-ro.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-get-link.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-global_page_state.m4 Linux 5.9 compat: NR_SLAB_RECLAIMABLE 2020-08-30 14:18:50 -07:00
kernel-group-info.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-in-compat-syscall.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-inode-create.m4 Linux 5.12 compat: idmapped mounts 2021-06-23 13:22:15 -07:00
kernel-inode-getattr.m4 Linux 5.12 compat: idmapped mounts 2021-06-23 13:22:15 -07:00
kernel-inode-lock.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-inode-lookup.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-inode-set-flags.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-inode-set-iversion.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-inode-times.m4 config/kernel-inode-times: initialize timespec 2020-05-04 15:25:48 -07:00
kernel-insert-inode-locked.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-is_owner_or_cap.m4 Linux 5.12 compat: idmapped mounts 2021-06-23 13:22:15 -07:00
kernel-kmap-atomic-args.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-kmem-cache.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-kmem.m4 Linux 5.8 compat: __vmalloc() 2020-06-08 16:32:02 -07:00
kernel-kstrtoul.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-ktime.m4 Linux 5.6 compat: ktime_get_raw_ts64() 2020-02-27 09:30:45 -08:00
kernel-kuid-helpers.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-kuidgid.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-lseek-execute.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-make-request-fn.m4 Linux 5.14 compat: blk_alloc_disk() 2021-09-22 15:19:08 -07:00
kernel-misc-minor.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-mkdir.m4 Linux 5.12 compat: idmapped mounts 2021-06-23 13:22:15 -07:00
kernel-mknod.m4 Linux 5.12 compat: idmapped mounts 2021-06-23 13:22:15 -07:00
kernel-mod-param.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-objtool.m4 Linux 5.10 compat: frame.h renamed objtool.h 2020-11-03 09:51:15 -08:00
kernel-pagemap-folio_wait_bit.m4 Linux 5.16: wait_on_page_bit() no longer available to modules 2021-12-06 13:40:43 -08:00
kernel-pde-data.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-percpu.m4 Linux 5.10 compat: percpu_ref added data member 2020-11-03 09:51:20 -08:00
kernel-proc-operations.m4 Linux 5.6 compat: struct proc_ops 2020-02-07 11:03:53 -08:00
kernel-put-link.m4 Fix typos 2020-06-09 21:24:09 -07:00
kernel-rename.m4 Linux 5.12 compat: idmapped mounts 2021-06-23 13:22:15 -07:00
kernel-revalidate-disk-size.m4 Linux 5.11 compat: revalidate_disk_size() 2021-01-05 10:26:32 -08:00
kernel-rw.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-rwsem.m4 Delete rw_semaphore.wait_lock configure check 2020-12-23 14:34:59 -08:00
kernel-sched.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-security-inode-init.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-set-nlink.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-setattr-prepare.m4 Linux 5.12 compat: idmapped mounts 2021-06-23 13:22:15 -07:00
kernel-sget-args.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-show-options.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-shrink.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-siginfo.m4 Add SIGSTOP and SIGTSTP handling to issig 2021-09-22 15:19:08 -07:00
kernel-signal-stop.m4 Add SIGSTOP and SIGTSTP handling to issig 2021-09-22 15:19:08 -07:00
kernel-special-state.m4 Add SIGSTOP and SIGTSTP handling to issig 2021-09-22 15:19:08 -07:00
kernel-stdarg.m4 Linux 5.15 compat: standalone <linux/stdarg.h> 2021-09-22 15:19:08 -07:00
kernel-super-userns.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-symlink.m4 Linux 5.12 compat: idmapped mounts 2021-06-23 13:22:15 -07:00
kernel-timer.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-tmpfile.m4 Update tmpfile() existence detection 2021-06-23 13:22:15 -07:00
kernel-totalhigh_pages.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-totalram-pages-func.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-truncate-setsize.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-userns-capabilities.m4 Linux 4.10 compat: has_capability() 2020-07-19 09:56:21 -07:00
kernel-usleep_range.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-vfs-direct_IO.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-vfs-fsync.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel-vfs-getattr.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-vfs-iov_iter.m4 Linux 5.10 compat: use iov_iter in uio structure 2020-12-23 14:35:39 -08:00
kernel-vfs-iterate.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-vfs-rw-iterate.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-vfs-set_page_dirty.m4 Linux 5.14 compat: explicity assign set_page_dirty 2021-09-22 15:19:08 -07:00
kernel-wait.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00
kernel-xattr-handler.m4 Linux 5.12 compat: idmapped mounts 2021-06-23 13:22:15 -07:00
kernel-zlib.m4 Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
kernel.m4 Linux 5.16: wait_on_page_bit() no longer available to modules 2021-12-06 13:40:43 -08:00
lib-ld.m4 config: libintl/libiconv for gettext() detection 2019-04-19 12:09:29 -07:00
lib-link.m4 Clarify comments in config/*.m4, vdev_geom.c, zfs_allow_*.ksh 2020-06-22 09:46:37 -07:00
lib-prefix.m4 Clarify comments in config/*.m4, vdev_geom.c, zfs_allow_*.ksh 2020-06-22 09:46:37 -07:00
mount-helper.m4 Autoconf 2.70 compatibility 2021-01-05 10:33:55 -08:00
nls.m4 config: libintl/libiconv for gettext() detection 2019-04-19 12:09:29 -07:00
pkg.m4 Fix typos in config/ 2019-08-30 09:40:30 -07:00
po.m4 config: libintl/libiconv for gettext() detection 2019-04-19 12:09:29 -07:00
progtest.m4 config: libintl/libiconv for gettext() detection 2019-04-19 12:09:29 -07:00
rpm.am config/zfs-build.m4: never define _initramfs in RPM_DEFINE_UTIL 2020-09-15 18:36:03 -07:00
tgz.am Make RPM_DEFINE_KMOD conditional on CONFIG_KERNEL 2020-07-14 17:32:21 -07:00
toolchain-simd.m4 Add FreeBSD support to OpenZFS 2020-04-14 11:36:28 -07:00
user-clock_gettime.m4 Clean up lib dependencies 2020-07-10 14:26:00 -07:00
user-dracut.m4 Autoconf 2.70 compatibility 2021-01-05 10:33:55 -08:00
user-gettext.m4 Add config.rpath for AM_GNU_GETTEXT 2020-07-10 14:26:12 -07:00
user-libaio.m4 Fix up FIND_SYSTEM_LIBRARY to work with cross-compiling 2020-07-10 14:26:40 -07:00
user-libblkid.m4 Fix up FIND_SYSTEM_LIBRARY to work with cross-compiling 2020-07-10 14:26:40 -07:00
user-libcrypto.m4 Fix up FIND_SYSTEM_LIBRARY to work with cross-compiling 2020-07-10 14:26:40 -07:00
user-libexec.m4 Autoconf 2.70 compatibility 2021-01-05 10:33:55 -08:00
user-libtirpc.m4 Fix up FIND_SYSTEM_LIBRARY to work with cross-compiling 2020-07-10 14:26:40 -07:00
user-libudev.m4 Fix up FIND_SYSTEM_LIBRARY to work with cross-compiling 2020-07-10 14:26:40 -07:00
user-libuuid.m4 Fix up FIND_SYSTEM_LIBRARY to work with cross-compiling 2020-07-10 14:26:40 -07:00
user-makedev.m4 Autoconf 2.70 compatibility 2021-01-05 10:33:55 -08:00
user-pam.m4 Use correct prefix for share/pam-configs 2020-07-30 09:09:46 -07:00
user-runstatedir.m4 Add defs for makefile installation dir vars 2014-03-31 16:11:13 -07:00
user-systemd.m4 Autoconf 2.70 compatibility 2021-01-05 10:33:55 -08:00
user-sysvinit.m4 Autoconf 2.70 compatibility 2021-01-05 10:33:55 -08:00
user-udev.m4 Autoconf 2.70 compatibility 2021-01-05 10:33:55 -08:00
user-zlib.m4 Fix up FIND_SYSTEM_LIBRARY to work with cross-compiling 2020-07-10 14:26:40 -07:00
user.m4 Clean up lib dependencies 2020-07-10 14:26:00 -07:00
zfs-build.m4 Use fallthrough macro 2021-11-12 15:24:36 -08:00
zfs-meta.m4 Perform KABI checks in parallel 2019-10-01 12:50:34 -07:00