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linux 5.13 compat: bdevops->revalidate_disk() removed 

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
This commit is contained in:
Coleman Kane 2021-05-11 22:53:02 -04:00 committed by GitHub
parent 4704be2879
commit 48c7b0e444
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 38 additions and 0 deletions
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32
config/kernel-block-device-operations.m4
View File

@ -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
])

4
include/os/linux/kernel/linux/blkdev_compat.h
View File

@ -277,18 +277,22 @@ bio_set_bi_error(struct bio *bio, int error)
static inline int
zfs_check_media_change(struct block_device *bdev)
{
#ifdef HAVE_BLOCK_DEVICE_OPERATIONS_REVALIDATE_DISK
struct gendisk *gd = bdev->bd_disk;
const struct block_device_operations *bdo = gd->fops;
#endif
if (!bdev_check_media_change(bdev))
return (0);
#ifdef HAVE_BLOCK_DEVICE_OPERATIONS_REVALIDATE_DISK
/*
* Force revalidation, to mimic the old behavior of
* check_disk_change()
*/
if (bdo->revalidate_disk)
bdo->revalidate_disk(gd);
#endif
return (0);
}

2
module/os/linux/zfs/zvol_os.c
View File

@ -756,7 +756,9 @@ static struct block_device_operations zvol_ops = {
.ioctl = zvol_ioctl,
.compat_ioctl = zvol_compat_ioctl,
.check_events = zvol_check_events,
#ifdef HAVE_BLOCK_DEVICE_OPERATIONS_REVALIDATE_DISK
.revalidate_disk = zvol_revalidate_disk,
#endif
.getgeo = zvol_getgeo,
.owner = THIS_MODULE,
#ifdef HAVE_SUBMIT_BIO_IN_BLOCK_DEVICE_OPERATIONS