From 45c91d808ff989d950e260dab9f89e8f4a3c9c2c Mon Sep 17 00:00:00 2001 From: Shaohua Li Date: Mon, 22 Aug 2016 21:14:02 -0700 Subject: raid5: avoid unnecessary bio data set bio_reset doesn't change bi_io_vec and bi_max_vecs, so we don't need to set them every time. bi_private will be set before the bio is dispatched. Signed-off-by: Shaohua Li --- drivers/md/raid5.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) (limited to 'drivers/md') diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index d1a279b1916b..62febe8d4919 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -2005,7 +2005,12 @@ static struct stripe_head *alloc_stripe(struct kmem_cache *sc, gfp_t gfp, struct r5dev *dev = &sh->dev[i]; bio_init(&dev->req); + dev->req.bi_io_vec = &dev->vec; + dev->req.bi_max_vecs = 1; + bio_init(&dev->rreq); + dev->rreq.bi_io_vec = &dev->rvec; + dev->rreq.bi_max_vecs = 1; } } return sh; @@ -2507,14 +2512,6 @@ static void raid5_build_block(struct stripe_head *sh, int i, int previous) { struct r5dev *dev = &sh->dev[i]; - dev->req.bi_io_vec = &dev->vec; - dev->req.bi_max_vecs = 1; - dev->req.bi_private = sh; - - dev->rreq.bi_io_vec = &dev->rvec; - dev->rreq.bi_max_vecs = 1; - dev->rreq.bi_private = sh; - dev->flags = 0; dev->sector = raid5_compute_blocknr(sh, i, previous); } -- cgit v1.2.3-55-g7522