btrfs: fix file_offset for REQ_BTRFS_ONE_ORDERED bios that get split

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[ Upstream commit c731cd0b6d ]

If a bio gets split, it needs to have a proper file_offset for checksum
validation and repair to work properly.

Based on feedback from Josef, commit 852eee62d3 ("btrfs: allow
btrfs_submit_bio to split bios") skipped this adjustment for ONE_ORDERED
bios.  But if we actually ever need to split a ONE_ORDERED read bio, this
will lead to a wrong file offset in the repair code.  Right now the only
user of the file_offset is logging of an error message so this is mostly
harmless, but the wrong offset might be more problematic for additional
users in the future.

Fixes: 852eee62d3 ("btrfs: allow btrfs_submit_bio to split bios")
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Christoph Hellwig 2023-05-31 09:53:54 +02:00 • committed by Greg Kroah-Hartman

parent 82e3a2913b

commit ad87179a20

1 changed files with 1 additions and 2 deletions

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fs/btrfs/bio.c

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