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btrfs: mark compressed range uptodate only if all bio succeed

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[ Upstream commit 240246f6b9 ]

In compression write endio sequence, the range which the compressed_bio
writes is marked as uptodate if the last bio of the compressed (sub)bios
is completed successfully. There could be previous bio which may
have failed which is recorded in cb->errors.

Set the writeback range as uptodate only if cb->errors is zero, as opposed
to checking only the last bio's status.

Backporting notes: in all versions up to 4.4 the last argument is always
replaced by "!cb->errors".

CC: stable@vger.kernel.org # 4.4+
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
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:
Goldwyn Rodrigues
2021-08-02 09:30:34 -05:00
committed by Greg Kroah-Hartman
parent 29bb8b3fc2
commit 9fb9f0b59d
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/compression.c
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@@ -290,7 +290,7 @@ static void end_compressed_bio_write(struct bio *bio)
cb->start,
cb->start + cb->len - 1,
NULL,
bio->bi_error ? 0 : 1);
!cb->errors);
cb->compressed_pages[0]->mapping = NULL;
end_compressed_writeback(inode, cb);