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Btrfs: use bio_clone_fast to clone our bio

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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>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Liu Bo 2017-04-04 12:23:25 -07:00 committed by David Sterba
parent 7870d0822b
commit 015c1bd9f1
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/extent_io.c
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@ -2694,7 +2694,7 @@ 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;