Re: [PATCH] cgroup: fix reverse unlock sequence in cgroup_get_sb

From: Danny Feng
Date: Tue Jul 21 2009 - 21:59:50 EST


This is a multi-part message in MIME format.On 07/22/2009 12:03 AM, Paul Menage wrote:
On Tue, Jul 21, 2009 at 3:25 AM, Xiaotian Feng<dfeng@xxxxxxxxxx> wrote:
In cgroup_get_sb, the lock sequence is:
mutex_lock(&inode->i_mutex);
mutex_lock(&cgroup->mutex);
so the last unlock sequence should be:

Make this "so for consistency the last ..." ?

Maybe make the patch title "Make unlock sequence in cgroup_get_sb
consistent" so someone looking through the change logs for fixes to
backport doesn't wrongly thing that this fixes any bug"?


Yep, this is a trivial patch. Modified following your suggestion, thank you.

mutex_unlock(&cgroup->mutex);
mutex_unlock(&inode->i_mutex);

Signed-off-by: Xiaotian Feng<dfeng@xxxxxxxxxx>

Acked-by: Paul Menage<menage@xxxxxxxxxx>

Paul