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block: fix req_bio_endio append error handling

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Shinichiro Kawasaki reports that there is a bug in a recent
req_bio_endio() patch causing problems with zonefs. As Shinichiro
suggested, inverse the condition in zone append path to resemble how it
was before: fail when it's not fully completed.

Fixes: 478eb72b815f3 ("block: optimise req_bio_endio()")
Reported-by: Shinichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/344ea4e334aace9148b41af5f2426da38c8aa65a.1634914228.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2021-10-22 16:01:44 +01:00 committed by Jens Axboe
parent 8e9f666a6e
commit 297db73184
1 changed files with 1 additions and 1 deletions
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block/blk-mq.c
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@ -640,7 +640,7 @@ static void req_bio_endio(struct request *rq, struct bio *bio,
* Partial zone append completions cannot be supported as the
* BIO fragments may end up not being written sequentially.
*/
if (bio->bi_iter.bi_size == nbytes)
if (bio->bi_iter.bi_size != nbytes)
bio->bi_status = BLK_STS_IOERR;
else
bio->bi_iter.bi_sector = rq->__sector;