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| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2008-04-09 02:41:54 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-09 03:25:53 +0200 |
| commit | 41e3355de052693c7a0cad74b845148d262edadf (patch) | |
| tree | 7d40851015f1a90a9c6386c3e880ed23ac5127cb | |
| parent | acpi thermal: fix result check (diff) | |
| download | linux-41e3355de052693c7a0cad74b845148d262edadf.tar.xz linux-41e3355de052693c7a0cad74b845148d262edadf.zip | |
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>
| -rw-r--r-- | mm/memcontrol.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 23b5fa4cabd8..2e0bfc93484b 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -978,7 +978,7 @@ static int alloc_mem_cgroup_per_zone_info(struct mem_cgroup *mem, int node) { struct mem_cgroup_per_node *pn; struct mem_cgroup_per_zone *mz; - int zone; + int zone, tmp = node; /* * This routine is called against possible nodes. * But it's BUG to call kmalloc() against offline node. @@ -987,10 +987,9 @@ static int alloc_mem_cgroup_per_zone_info(struct mem_cgroup *mem, int node) * never be onlined. It's better to use memory hotplug callback * function. */ - if (node_state(node, N_HIGH_MEMORY)) - pn = kmalloc_node(sizeof(*pn), GFP_KERNEL, node); - else - pn = kmalloc(sizeof(*pn), GFP_KERNEL); + if (!node_state(node, N_NORMAL_MEMORY)) + tmp = -1; + pn = kmalloc_node(sizeof(*pn), GFP_KERNEL, tmp); if (!pn) return 1; |