From: Lai Jiangshan <laijs@cn.fujitsu.com>
Date: Sun, 19 Oct 2008 03:28:07 +0000 (-0700)
Subject: devcgroup: remove spin_lock()
X-Git-Tag: v2.6.28-rc1~149
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=47c59803becb55b72b26cdab3838d621a15badc8;p=pandora-kernel.git

devcgroup: remove spin_lock()

Since we introduced rcu for read side, spin_lock is used only for update.
But we always hold cgroup_lock() when update, so spin_lock() is not need.

Additional cleanup:
1) include linux/rcupdate.h explicitly
2) remove unused variable cur_devcgroup in devcgroup_update_access()

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Acked-by: "Serge E. Hallyn" <serue@us.ibm.com>
Cc: Paul Menage <menage@google.com>
Cc: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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