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From: Greg KH on 12 Mar 2010 20:40
2.6.33-stable review patch. If anyone has any objections, please let me know.

-----------------

From: Haicheng Li <haicheng.li(a)linux.intel.com>

commit f3186a9c51eabe75b2780153ed7f07778d78b16e upstream.

Comparing with existing code, it's a simpler way to use kzalloc_node()
to ensure that each unused alien cache entry is NULL.

CC: Eric Dumazet <eric.dumazet(a)gmail.com>
Acked-by: Andi Kleen <ak(a)linux.intel.com>
Acked-by: Christoph Lameter <cl(a)linux-foundation.org>
Acked-by: Matt Mackall <mpm(a)selenic.com>
Signed-off-by: Haicheng Li <haicheng.li(a)linux.intel.com>
Signed-off-by: Pekka Enberg <penberg(a)cs.helsinki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)suse.de>

---
mm/slab.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)

--- a/mm/slab.c
+++ b/mm/slab.c
@@ -983,13 +983,11 @@ static struct array_cache **alloc_alien_

if (limit > 1)
limit = 12;
- ac_ptr = kmalloc_node(memsize, gfp, node);
+ ac_ptr = kzalloc_node(memsize, gfp, node);
if (ac_ptr) {
for_each_node(i) {
- if (i == node || !node_online(i)) {
- ac_ptr[i] = NULL;
+ if (i == node || !node_online(i))
continue;
- }
ac_ptr[i] = alloc_arraycache(node, limit, 0xbaadf00d, gfp);
if (!ac_ptr[i]) {
for (i--; i >= 0; i--)


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