memcg: fix node_state handling
authorKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Wed, 9 Apr 2008 00:41:54 +0000 (17:41 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 9 Apr 2008 01:25:53 +0000 (18:25 -0700)
commit41e3355de052693c7a0cad74b845148d262edadf
tree7d40851015f1a90a9c6386c3e880ed23ac5127cb
parentbb070e43497d4fcfea7d8b52003fe1376c218343
memcg: fix node_state handling

This should be N_NORMAL_MEMORY.

N_NORMAL_MEMORY is "true" if a node has memory for the kernel.  N_HIGH_MEMORY
is "true" if a node has memory for HIGHMEM.  (If CONFIG_HIGHMEM=n, always
"true")

This check is used for testing whether we can use kmalloc_node() on a node.
Then, if there is a node which only contains HIGHMEM, the system will call
kmalloc_node() which doesn't contain memory for the kernel.  If it happens
under SLUB, the kernel will panic.  I think this only happens on x86_32-numa.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/memcontrol.c