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[1/8] Btrfs: use bio_clone_fast to clone our bio

Message ID 20170517222252.29242-2-bo.li.liu@oracle.com (mailing list archive)
State New, archived
Headers show

Commit Message

Liu Bo May 17, 2017, 10:22 p.m. UTC 
For raid1 and raid10, we clone the original bio to the bios which are then
sent to different disks.

Right now we use bio_clone_bioset to create a clone bio with iterating
bi_io_vec to initialize it.  This changes it to use bio_clone_fast()
which creates a clone bio but only copies the bi_io_vec pointer
instead of iterating bi_io_vec.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
---
 fs/btrfs/extent_io.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 27fdb25..0d4aea4 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2700,7 +2700,7 @@  struct bio *btrfs_bio_clone(struct bio *bio, gfp_t gfp_mask)
 	struct btrfs_io_bio *btrfs_bio;
 	struct bio *new;
 
-	new = bio_clone_bioset(bio, gfp_mask, btrfs_bioset);
+	new = bio_clone_fast(bio, gfp_mask, btrfs_bioset);
 	if (new) {
 		btrfs_bio = btrfs_io_bio(new);
 		btrfs_bio->csum = NULL;