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authorKent Overstreet <kmo@daterainc.com>2013-11-24 06:34:15 +0400
committerKent Overstreet <kmo@daterainc.com>2013-11-24 10:33:56 +0400
commit196d38bccfcfa32faed8c561868336fdfa0fe8e4 (patch)
tree9dee2bc174436072c9e90ffebbe71f47fde63aaf /fs/bio-integrity.c
parente90abc8ec323c1fd2a25600097ef7ae1e91f39b0 (diff)
downloadlinux-196d38bccfcfa32faed8c561868336fdfa0fe8e4.tar.xz
block: Generic bio chaining
This adds a generic mechanism for chaining bio completions. This is going to be used for a bio_split() replacement, and it turns out to be very useful in a fair amount of driver code - a fair number of drivers were implementing this in their own roundabout ways, often painfully. Note that this means it's no longer to call bio_endio() more than once on the same bio! This can cause problems for drivers that save/restore bi_end_io. Arguably they shouldn't be saving/restoring bi_end_io at all - in all but the simplest cases they'd be better off just cloning the bio, and immutable biovecs is making bio cloning cheaper. But for now, we add a bio_endio_nodec() for these cases. Signed-off-by: Kent Overstreet <kmo@daterainc.com> Cc: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/bio-integrity.c')
-rw-r--r--fs/bio-integrity.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/bio-integrity.c b/fs/bio-integrity.c
index fed744b8c9e5..9d547d2e357c 100644
--- a/fs/bio-integrity.c
+++ b/fs/bio-integrity.c
@@ -502,7 +502,7 @@ static void bio_integrity_verify_fn(struct work_struct *work)
/* Restore original bio completion handler */
bio->bi_end_io = bip->bip_end_io;
- bio_endio(bio, error);
+ bio_endio_nodec(bio, error);
}
/**