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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: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
wifi-calibration
jblunck@suse.de 2005-11-21 21:32:36 -08:00 committed by Linus Torvalds
parent 640eb3b045
commit 233886dd32
1 changed files with 3 additions and 0 deletions
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3
drivers/md/dm-bio-list.h
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@ -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