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

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
@@ -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);
}