From: "Jianpeng Ma" <majianpeng@gmail.com>
To: Neil Brown <neilb@suse.de>
Cc: shli <shli@kernel.org>, linux-raid <linux-raid@vger.kernel.org>
Subject: [PATCH 1/3] raid5: Add per-stripe lock on toread in func
Date: Sat, 22 Sep 2012 10:22:52 +0800 [thread overview]
Message-ID: <201209221022496094906@gmail.com> (raw)
Commit b17459c05000fdbe8 introduce per-stripe lock,but it omit this
place.
Signed-off-by: Jianpeng Ma <majianpeng@gmail.com>
---
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
reply other threads:[~2012-09-22 2:22 UTC|newest]
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