diff options
| author | Shaohua Li <shli@fb.com> | 2017-02-21 20:57:01 +0100 |
|---|---|---|
| committer | Shaohua Li <shli@fb.com> | 2017-02-23 20:59:42 +0100 |
| commit | d939cdfde34f50b95254b375f498447c82190b3e (patch) | |
| tree | b6eb446cdfd86ede88f781c60f2d712f04705a83 /drivers/md | |
| parent | md/raid1: fix a use-after-free bug (diff) | |
| download | linux-d939cdfde34f50b95254b375f498447c82190b3e.tar.xz linux-d939cdfde34f50b95254b375f498447c82190b3e.zip | |
md/linear: shutup lockdep warnning
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>
Diffstat (limited to 'drivers/md')
| -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 789008bc94ff..5b06b0ddf7a3 100644 --- a/drivers/md/linear.c +++ b/drivers/md/linear.c @@ -224,7 +224,8 @@ 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"); |