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zfs/config/kernel-commit-metadata.m4

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Implement .commit_metadata hook for NFS export In order to implement synchronous NFS metadata semantics ZFS needs to provide the .commit_metadata hook. All it takes there is to make sure changes are committed to ZIL. Fortunately zfs_fsync() does just that, so simply calling it from zpl_commit_metadata() does the trick. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #969
2012-09-16 06:03:04 +00:00
dnl #
dnl # 2.6.33 API change
dnl # Added eops->commit_metadata() callback to allow the underlying
dnl # filesystem to determine the most efficient way to commit the inode.
dnl # Prior to this the nfs server would issue an explicit fsync().
dnl #
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341
2019-10-01 19:50:34 +00:00
AC_DEFUN([ZFS_AC_KERNEL_SRC_COMMIT_METADATA], [
ZFS_LINUX_TEST_SRC([export_operations_commit_metadata], [
Implement .commit_metadata hook for NFS export In order to implement synchronous NFS metadata semantics ZFS needs to provide the .commit_metadata hook. All it takes there is to make sure changes are committed to ZIL. Fortunately zfs_fsync() does just that, so simply calling it from zpl_commit_metadata() does the trick. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #969
2012-09-16 06:03:04 +00:00
#include <linux/exportfs.h>
Linux 6.8 compat: make test functions static The kernel is now being compiled with -Wmissing-prototypes. Most of our test stub functions had no prototype, and failed to compile. Since they don't need to be visible anywhere else, just make them all static. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Rob Norris <robn@despairlabs.com> Sponsored-by: https://despairlabs.com/sponsor/ Closes #15805 (cherry picked from commit 64afc4e66edf6a740f1c7ab808a452e42d964eb7)
2024-01-22 23:50:53 +00:00
static int commit_metadata(struct inode *inode) { return 0; }
Implement .commit_metadata hook for NFS export In order to implement synchronous NFS metadata semantics ZFS needs to provide the .commit_metadata hook. All it takes there is to make sure changes are committed to ZIL. Fortunately zfs_fsync() does just that, so simply calling it from zpl_commit_metadata() does the trick. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #969
2012-09-16 06:03:04 +00:00
static struct export_operations eops __attribute__ ((unused))={
.commit_metadata = commit_metadata,
};
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341
2019-10-01 19:50:34 +00:00
],[])
])
AC_DEFUN([ZFS_AC_KERNEL_COMMIT_METADATA], [
AC_MSG_CHECKING([whether eops->commit_metadata() exists])
ZFS_LINUX_TEST_RESULT([export_operations_commit_metadata], [
Implement .commit_metadata hook for NFS export In order to implement synchronous NFS metadata semantics ZFS needs to provide the .commit_metadata hook. All it takes there is to make sure changes are committed to ZIL. Fortunately zfs_fsync() does just that, so simply calling it from zpl_commit_metadata() does the trick. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #969
2012-09-16 06:03:04 +00:00
AC_MSG_RESULT(yes)
],[
Linux compat: Minimum kernel version 3.10 Increase the minimum supported kernel version from 2.6.32 to 3.10. This removes support for the following Linux enterprise distributions. Distribution | Kernel | End of Life ---------------- | ------ | ------------- Ubuntu 12.04 LTS | 3.2 | Apr 28, 2017 SLES 11 | 3.0 | Mar 32, 2019 RHEL / CentOS 6 | 2.6.32 | Nov 30, 2020 The following changes were made as part of removing support. * Updated `configure` to enforce a minimum kernel version as specified in the META file (Linux-Minimum: 3.10). configure: error: *** Cannot build against kernel version 2.6.32. *** The minimum supported kernel version is 3.10. * Removed all `configure` kABI checks and matching C code for interfaces which solely predate the Linux 3.10 kernel. * Updated all `configure` kABI checks to fail when an interface is missing which was in the 3.10 kernel up to the latest 5.1 kernel. Removed the HAVE_* preprocessor defines for these checks and updated the code to unconditionally use the verified interface. * Inverted the detection logic in several kABI checks to match the new interface as it appears in 3.10 and newer and not the legacy interface. * Consolidated the following checks in to individual files. Due the large number of changes in the checks it made sense to handle this now. It would be desirable to group other related checks in the same fashion, but this as left as future work. - config/kernel-blkdev.m4 - Block device kABI checks - config/kernel-blk-queue.m4 - Block queue kABI checks - config/kernel-bio.m4 - Bio interface kABI checks * Removed the kABI checks for sops->nr_cached_objects() and sops->free_cached_objects(). These interfaces are currently unused. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #9566
2019-11-12 16:59:06 +00:00
ZFS_LINUX_TEST_ERROR([eops->commit_metadata()])
Implement .commit_metadata hook for NFS export In order to implement synchronous NFS metadata semantics ZFS needs to provide the .commit_metadata hook. All it takes there is to make sure changes are committed to ZIL. Fortunately zfs_fsync() does just that, so simply calling it from zpl_commit_metadata() does the trick. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #969
2012-09-16 06:03:04 +00:00
])
])