[PATCH 1/3] raid5: Add per-stripe lock on toread in func
DORMANTno replies
From: Jianpeng Ma <hidden>
Date: 2012-09-22 02:22:52
Subsystem:
software raid (multiple disks) support, the rest · Maintainers:
Song Liu, Yu Kuai, Linus Torvalds
Commit b17459c05000fdbe8 introduce per-stripe lock,but it omit this place. Signed-off-by: Jianpeng Ma <redacted> --- drivers/md/raid5.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 7031b86..dd73209 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c@@ -2523,8 +2523,10 @@ handle_failed_stripe(struct r5conf *conf, struct stripe_head *sh, if (!test_bit(R5_Wantfill, &sh->dev[i].flags) && (!test_bit(R5_Insync, &sh->dev[i].flags) || test_bit(R5_ReadError, &sh->dev[i].flags))) { + spin_lock_irq(&sh->stripe_lock); bi = sh->dev[i].toread; sh->dev[i].toread = NULL; + spin_unlock_irq(&sh->stripe_lock); if (test_and_clear_bit(R5_Overlap, &sh->dev[i].flags)) wake_up(&conf->wait_for_overlap); if (bi) s->to_read--;
--
1.7.9.5