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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 <snitzer@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Mike Snitzer 2013-12-03 19:16:04 -07:00 committed by Jens Axboe
parent bc1e79acc1
commit 8d30726912
1 changed files with 6 additions and 6 deletions
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12
drivers/md/dm-cache-target.c
View File

@ -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_end_io = h->bi_end_io;
bio->bi_private = h->bi_private; 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); 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) { if (err) {
bio_endio(bio, err); bio_endio(bio, err);
return; return;