From: NeilBrown <neilb@suse.de>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Shaohua Li <shli@kernel.org>,
Fengguang Wu <fengguang.wu@intel.com>,
linux RAID <linux-raid@vger.kernel.org>,
lkml <linux-kernel@vger.kernel.org>
Subject: [GIT PULL REQUEST] one md BUG-fix for 3.15-rc
Date: Thu, 17 Apr 2014 17:12:06 +1000 [thread overview]
Message-ID: <20140417171206.4518ce1d@notabene.brown> (raw)
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The following changes since commit e240c1839d11152b0355442f8ac6d2d2d921be36:
raid5: get_active_stripe avoids device_lock (2014-04-09 14:42:42 +1000)
are available in the git repository at:
git://neil.brown.name/md tags/3.15-fixes
for you to fetch changes up to c7a6d35e463caacab08ca0333bdec5b8bdce8bbb:
raid5: fix a race of stripe count check (2014-04-17 17:05:28 +1000)
----------------------------------------------------------------
One BUG fix for md for recent commit
----------------------------------------------------------------
Shaohua Li (1):
raid5: fix a race of stripe count check
drivers/md/raid5.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 25247a852912..ad1b9bea446e 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -4370,8 +4370,7 @@ static struct stripe_head *__get_priority_stripe(struct r5conf *conf, int group)
sh->group = NULL;
}
list_del_init(&sh->lru);
- atomic_inc(&sh->count);
- BUG_ON(atomic_read(&sh->count) != 1);
+ BUG_ON(atomic_inc_return(&sh->count) != 1);
return sh;
}
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reply other threads:[~2014-04-17 7:12 UTC|newest]
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