[PATCH] dm: suspend: add noflush pushback

[pandora-kernel.git] / drivers / md / dm-bio-list.h

diff --git a/drivers/md/dm-bio-list.h b/drivers/md/dm-bio-list.h
index bbf4615..da43496 100644 (file)
--- a/drivers/md/dm-bio-list.h
+++ b/drivers/md/dm-bio-list.h
@@ -44,6 +44,20 @@ static inline void bio_list_merge(struct bio_list *bl, struct bio_list *bl2)
        bl->tail = bl2->tail;
 }
 
+static inline void bio_list_merge_head(struct bio_list *bl,
+                                      struct bio_list *bl2)
+{
+       if (!bl2->head)
+               return;
+
+       if (bl->head)
+               bl2->tail->bi_next = bl->head;
+       else
+               bl->tail = bl2->tail;
+
+       bl->head = bl2->head;
+}
+
 static inline struct bio *bio_list_pop(struct bio_list *bl)
 {
        struct bio *bio = bl->head;