Commit 233886dd authored by jblunck@suse.de's avatar jblunck@suse.de Committed by Linus Torvalds
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[PATCH] device-mapper snapshot: bio_list fix 



bio_list_merge() should do nothing if the second list is empty - not oops.

Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 640eb3b0

drivers/md/dm-bio-list.h

+3 −0
Original line number Diff line number Diff line
@@ -33,6 +33,9 @@ static inline void bio_list_add(struct bio_list *bl, struct bio *bio) 


static inline void bio_list_merge(struct bio_list *bl, struct bio_list *bl2)

{

	if (!bl2->head)

		return;



	if (bl->tail)

		bl->tail->bi_next = bl2->head;

	else