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....@oracle.com>
---
fs/btrfs/extent_io.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
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;
--
2.9.4
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