From a4ea1cc90604df08d471ae84eb9627319d10c844 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 21 Jun 2013 15:52:33 -0700 Subject: [PATCH] cgroup: always use RCU accessors for protected accesses kernel/cgroup.c still has places where a RCU pointer is set and accessed directly without going through RCU_INIT_POINTER() or rcu_dereference_protected(). They're all properly protected accesses so nothing is broken but it leads to spurious sparse RCU address space warnings. Substitute direct accesses with RCU_INIT_POINTER() and rcu_dereference_protected(). Note that %true is specified as the extra condition for all derference updates. This isn't ideal as all it does is suppressing warning without actually policing synchronization rules; however, most are scheduled to be removed pretty soon along with css_id itself, so no reason to be more elaborate. Combined with the previous changes, this removes all RCU related sparse warnings from cgroup. Signed-off-by: Tejun Heo Reported-by: Fengguang Wu Acked-by; Li Zefan --- Reading git-format-patch failed