tree de3893156c17c9ab220e4460630f581c55a0f487
parent 024e4ec1856d57bb78c06ec903d29dcf716f5f47
author Jerry Snitselaar <jerry.snitselaar@oracle.com> 1361493691 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1361496135 -0800

device_cgroup: don't grab mutex in rcu callback

Commit 103a197c0c4e ("security/device_cgroup: lock assert fails in
dev_exception_clean()") grabs devcgroup_mutex to fix assert failure, but
a mutex can't be grabbed in rcu callback.  Since there shouldn't be any
other references when css_free is called, mutex isn't needed for list
cleanup in devcgroup_css_free().

Signed-off-by: Jerry Snitselaar <jerry.snitselaar@oracle.com>
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Aristeu Rozanski <aris@redhat.com>
Cc: James Morris <james.l.morris@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>