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authorMing Lei <tom.leiming@gmail.com>2017-02-14 18:29:03 +0300
committerShaohua Li <shli@fb.com>2017-02-15 22:24:54 +0300
commitd7a1030839d35c04a620e841f406b9b2a8600041 (patch)
tree293b09d7b92528436daa8953c9202cf669702037 /drivers/md/md.h
parented7ef732ca9f7d6f42be8df6cc7bf4ace3534af3 (diff)
downloadlinux-d7a1030839d35c04a620e841f406b9b2a8600041.tar.xz
md: fast clone bio in bio_clone_mddev()
Firstly bio_clone_mddev() is used in raid normal I/O and isn't in resync I/O path. Secondly all the direct access to bvec table in raid happens on resync I/O except for write behind of raid1, in which we still use bio_clone() for allocating new bvec table. So this patch replaces bio_clone() with bio_clone_fast() in bio_clone_mddev(). Also kill bio_clone_mddev() and call bio_clone_fast() directly, as suggested by Christoph Hellwig. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ming Lei <tom.leiming@gmail.com> Signed-off-by: Shaohua Li <shli@fb.com>
Diffstat (limited to 'drivers/md/md.h')
-rw-r--r--drivers/md/md.h2
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/md/md.h b/drivers/md/md.h
index 42f8398181a8..b8859cbf84b6 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -673,8 +673,6 @@ extern void md_rdev_clear(struct md_rdev *rdev);
extern void mddev_suspend(struct mddev *mddev);
extern void mddev_resume(struct mddev *mddev);
-extern struct bio *bio_clone_mddev(struct bio *bio, gfp_t gfp_mask,
- struct mddev *mddev);
extern struct bio *bio_alloc_mddev(gfp_t gfp_mask, int nr_iovecs,
struct mddev *mddev);