[PATCH v4 06/15] md/raid5: set correct page offset for bi_io_vec in ops_run_io()
From: Yufen Yu <hidden>
Date: 2020-06-12 11:42:11
Subsystem:
software raid (multiple disks) support, the rest · Maintainers:
Song Liu, Yu Kuai, Linus Torvalds
After using r5pages for each sh->dev[i], we need to set correct offset of that page for bi_io_vec when issue bio. The value of offset is zero without using r5pages. Signed-off-by: Yufen Yu <redacted> --- drivers/md/raid5.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 3ae2cc8cd1ea..9ab7f99406d6 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c@@ -1200,7 +1200,7 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s) sh->dev[i].vec.bv_page = sh->dev[i].page; bi->bi_vcnt = 1; bi->bi_io_vec[0].bv_len = conf->stripe_size; - bi->bi_io_vec[0].bv_offset = 0; + bi->bi_io_vec[0].bv_offset = sh->dev[i].offset; bi->bi_iter.bi_size = conf->stripe_size; bi->bi_write_hint = sh->dev[i].write_hint; if (!rrdev)
@@ -1254,7 +1254,7 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s) sh->dev[i].rvec.bv_page = sh->dev[i].page; rbi->bi_vcnt = 1; rbi->bi_io_vec[0].bv_len = conf->stripe_size; - rbi->bi_io_vec[0].bv_offset = 0; + rbi->bi_io_vec[0].bv_offset = sh->dev[i].offset; rbi->bi_iter.bi_size = conf->stripe_size; rbi->bi_write_hint = sh->dev[i].write_hint; sh->dev[i].write_hint = RWH_WRITE_LIFE_NOT_SET;
--
2.21.3