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linux 5.13 compat: bdevops->revalidate_disk() removed (#12122)

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Linux kernel commit 0f00b82e5413571ed225ddbccad6882d7ea60bc7 removes the
revalidate_disk() handler from struct block_device_operations. This
caused a regression, and this commit eliminates the call to it and the
assignment in the block_device_operations static handler assignment
code, when configure identifies that the kernel doesn't support that
API handler.

Reviewed-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Coleman Kane <ckane@colemankane.org>
Closes #11967
Closes #11977
(cherry picked from commit 48c7b0e444)
Signed-off-by: Jonathon Fernyhough <jonathon@m2x.dev>

Co-authored-by: Coleman Kane <ckane@colemankane.org>
This commit is contained in:
Jonathon Fernyhough
2021-06-02 00:00:45 +00:00
committed by Tony Hutter
parent 8f93ab53d4
commit d014da0032
3 changed files with 38 additions and 0 deletions
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config/kernel-block-device-operations.m4
+32
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@@ -52,12 +52,44 @@ AC_DEFUN([ZFS_AC_KERNEL_BLOCK_DEVICE_OPERATIONS_RELEASE_VOID], [
])
])
dnl #
dnl # 5.13 API change
dnl # block_device_operations->revalidate_disk() was removed
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLOCK_DEVICE_OPERATIONS_REVALIDATE_DISK], [
ZFS_LINUX_TEST_SRC([block_device_operations_revalidate_disk], [
#include <linux/blkdev.h>
int blk_revalidate_disk(struct gendisk *disk) {
return(0);
}
static const struct block_device_operations
bops __attribute__ ((unused)) = {
.revalidate_disk = blk_revalidate_disk,
};
], [], [$NO_UNUSED_BUT_SET_VARIABLE])
])
AC_DEFUN([ZFS_AC_KERNEL_BLOCK_DEVICE_OPERATIONS_REVALIDATE_DISK], [
AC_MSG_CHECKING([whether bops->revalidate_disk() exists])
ZFS_LINUX_TEST_RESULT([block_device_operations_revalidate_disk], [
AC_DEFINE([HAVE_BLOCK_DEVICE_OPERATIONS_REVALIDATE_DISK], [1],
[Define if revalidate_disk() in block_device_operations])
AC_MSG_RESULT(yes)
],[
AC_MSG_RESULT(no)
])
])
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLOCK_DEVICE_OPERATIONS], [
ZFS_AC_KERNEL_SRC_BLOCK_DEVICE_OPERATIONS_CHECK_EVENTS
ZFS_AC_KERNEL_SRC_BLOCK_DEVICE_OPERATIONS_RELEASE_VOID
ZFS_AC_KERNEL_SRC_BLOCK_DEVICE_OPERATIONS_REVALIDATE_DISK
])
AC_DEFUN([ZFS_AC_KERNEL_BLOCK_DEVICE_OPERATIONS], [
ZFS_AC_KERNEL_BLOCK_DEVICE_OPERATIONS_CHECK_EVENTS
ZFS_AC_KERNEL_BLOCK_DEVICE_OPERATIONS_RELEASE_VOID
ZFS_AC_KERNEL_BLOCK_DEVICE_OPERATIONS_REVALIDATE_DISK
])