Commit 99c75e31 authored by Mikulas Patocka's avatar Mikulas Patocka Committed by Alasdair G Kergon
Browse files

dm: bio list add bio_list_add_head 



Introduce a function that adds a bio to the head of the list for
use by the patch that will support barriers.

Signed-off-by: default avatarMikulas Patocka <mpatocka@redhat.com>
Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
parent a32079ce

drivers/md/dm-bio-list.h

+10 −0
Original line number Diff line number Diff line
@@ -52,6 +52,16 @@ static inline void bio_list_add(struct bio_list *bl, struct bio *bio) 
	bl->tail = bio;

}



static inline void bio_list_add_head(struct bio_list *bl, struct bio *bio)

{

	bio->bi_next = bl->head;



	bl->head = bio;



	if (!bl->tail)

		bl->tail = bio;

}



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

{

	if (!bl2->head)