From: Mike Snitzer Date: Wed, 4 Dec 2013 02:16:04 +0000 (-0700) Subject: dm cache: increment bi_remaining when bi_end_io is restored X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=8d30726912cb39c3a3ebde06214d54861f8fdde2;p=deliverable%2Flinux.git dm cache: increment bi_remaining when bi_end_io is restored Move the bio->bi_remaining increment into dm_unhook_bio() so the overwrite_endio() handler works as expected. Signed-off-by: Mike Snitzer Signed-off-by: Jens Axboe --- diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c index bf3a206abd78..7c8dd1f69ce0 100644 --- a/drivers/md/dm-cache-target.c +++ b/drivers/md/dm-cache-target.c @@ -85,6 +85,12 @@ static void dm_unhook_bio(struct dm_hook_info *h, struct bio *bio) { bio->bi_end_io = h->bi_end_io; bio->bi_private = h->bi_private; + + /* + * Must bump bi_remaining to allow bio to complete with + * restored bi_end_io. + */ + atomic_inc(&bio->bi_remaining); } /*----------------------------------------------------------------*/ @@ -765,12 +771,6 @@ static void writethrough_endio(struct bio *bio, int err) dm_unhook_bio(&pb->hook_info, bio); - /* - * Must bump bi_remaining to allow bio to complete with - * restored bi_end_io. - */ - atomic_inc(&bio->bi_remaining); - if (err) { bio_endio(bio, err); return;