Memory controller use rcu_read_lock() in mem_cgroup_cache_charge()
authorBalbir Singh <balbir@linux.vnet.ibm.com>
Thu, 7 Feb 2008 08:14:18 +0000 (00:14 -0800)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Thu, 7 Feb 2008 16:42:20 +0000 (08:42 -0800)
commitac44d354d5c9ced49b1165d6496f134501134219
treebe054e8e2d37739a33d94cc78db3fd65e73c3aff
parent217bc3194d57150549e9234e6ddfee30de28cc78
Memory controller use rcu_read_lock() in mem_cgroup_cache_charge()

Hugh Dickins noticed that we were using rcu_dereference() without
rcu_read_lock() in the cache charging routine. The patch below fixes
this problem

Signed-off-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/memcontrol.c