diff options
| author | Shaohua Li <shli@fb.com> | 2017-02-21 11:57:01 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-10-21 17:21:35 +0200 |
| commit | cf368c29f5ac57c798eb99c1fba04314588e8566 (patch) | |
| tree | 4014c2c36000d41684f8bd398579a25413b9a350 | |
| parent | e9afe7c8641ab23a060799f19f1aeb5b84d1807a (diff) | |
md/linear: shutup lockdep warnning
[ Upstream commit d939cdfde34f50b95254b375f498447c82190b3e ]
Commit 03a9e24(md linear: fix a race between linear_add() and
linear_congested()) introduces the warnning.
Acked-by: Coly Li <colyli@suse.de>
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/md/linear.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/md/linear.c b/drivers/md/linear.c index b0c0aef92a37..12abf69d568a 100644 --- a/drivers/md/linear.c +++ b/drivers/md/linear.c @@ -223,7 +223,8 @@ static int linear_add(struct mddev *mddev, struct md_rdev *rdev) * oldconf until no one uses it anymore. */ mddev_suspend(mddev); - oldconf = rcu_dereference(mddev->private); + oldconf = rcu_dereference_protected(mddev->private, + lockdep_is_held(&mddev->reconfig_mutex)); mddev->raid_disks++; WARN_ONCE(mddev->raid_disks != newconf->raid_disks, "copied raid_disks doesn't match mddev->raid_disks"); |