raid5: Add per-stripe lock on toread in func

PATCH In review Jianpeng Ma 1 participant 1 message Sep 22, 2012 MD RAID

lore

Share & tools

lore

Jianpeng Ma

author

2012-09-22 02:22 UTC #0 lore raw

PATCH 1/3 raid5: Add per-stripe lock on toread in func

Commit b17459c05000fdbe8 introduce per-stripe lock,but it omit this place.

Signed-off-by Jianpeng Ma <[email protected]>

---
 drivers/md/raid5.c |    2 ++
 1 file changed, 2 insertions(+)

drivers/md/raid5.c +2 -0

index 7031b86..dd73209 100644
@@ -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--;

Signature · 1 line

1.7.9.5