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authorSong Liu <songliubraving@fb.com>2020-12-09 11:44:42 -0800
committerSong Liu <songliubraving@fb.com>2020-12-09 20:46:01 -0800
commit57a0f3a81ef21fe51d6223aa78a1a890098d4ada (patch)
tree50aa998b4c268af70691699bf8fed1c4e2168670 /drivers/md/md.c
parent17c28c2a068730e9d065a0e4ed03beed074d8997 (diff)
Revert "md: add md_submit_discard_bio() for submitting discard bio"
This reverts commit 2628089b74d5a64bd0bcb5d247a18f78d7b6f4d0. Matthew Ruffell reported data corruption in raid10 due to the changes in discard handling [1]. Revert these changes before we find a proper fix. [1] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1907262/ Cc: Matthew Ruffell <matthew.ruffell@canonical.com> Cc: Xiao Ni <xni@redhat.com> Signed-off-by: Song Liu <songliubraving@fb.com>
Diffstat (limited to 'drivers/md/md.c')
-rw-r--r--drivers/md/md.c20
1 files changed, 0 insertions, 20 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 98bac4f304ae..0037c6ecab65 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -8582,26 +8582,6 @@ void md_write_end(struct mddev *mddev)
EXPORT_SYMBOL(md_write_end);
-/* This is used by raid0 and raid10 */
-void md_submit_discard_bio(struct mddev *mddev, struct md_rdev *rdev,
- struct bio *bio, sector_t start, sector_t size)
-{
- struct bio *discard_bio = NULL;
-
- if (__blkdev_issue_discard(rdev->bdev, start, size,
- GFP_NOIO, 0, &discard_bio) || !discard_bio)
- return;
-
- bio_chain(discard_bio, bio);
- bio_clone_blkg_association(discard_bio, bio);
- if (mddev->gendisk)
- trace_block_bio_remap(bdev_get_queue(rdev->bdev),
- discard_bio, disk_devt(mddev->gendisk),
- bio->bi_iter.bi_sector);
- submit_bio_noacct(discard_bio);
-}
-EXPORT_SYMBOL(md_submit_discard_bio);
-
/* md_allow_write(mddev)
* Calling this ensures that the array is marked 'active' so that writes
* may proceed without blocking. It is important to call this before