From: Jonathan Brassow <jbrassow@redhat.com>
Date: Wed, 27 Jul 2011 01:00:36 +0000 (+1000)
Subject: MD: raid1 s/sysfs_notify_dirent/sysfs_notify_dirent_safe
X-Git-Tag: v3.1-rc1~131^2~41
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=654e8b5abc0a793f0c029128db6e4804691a383e;p=~emulex%2Finfiniband.git

MD: raid1 s/sysfs_notify_dirent/sysfs_notify_dirent_safe

If device-mapper creates a RAID1 array that includes devices to
be rebuilt, it will deref a NULL pointer when finished because
sysfs is not used by device-mapper instantiated RAID devices.

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
---

diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index a7e69081187..3cbf0ac2aaa 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1031,7 +1031,7 @@ static int raid1_spare_active(mddev_t *mddev)
 		    && !test_bit(Faulty, &rdev->flags)
 		    && !test_and_set_bit(In_sync, &rdev->flags)) {
 			count++;
-			sysfs_notify_dirent(rdev->sysfs_state);
+			sysfs_notify_dirent_safe(rdev->sysfs_state);
 		}
 	}
 	spin_lock_irqsave(&conf->device_lock, flags);