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[PATCH] init_reap_node() initialization fix 

It looks like there is a bug in init_reap_node() in slab.c that can cause
multiple oops's on certain ES7000 configurations.  The variable reap_node
is defined per cpu, but only initialized on a single CPU.  This causes an
oops in next_reap_node() when __get_cpu_var(reap_node) returns the wrong
value.  Fix is below.

Signed-off-by: Dan Yeisley <dan.yeisley@unisys.com>
Cc: Andi Kleen <ak@suse.de>
Acked-by: Christoph Lameter <clameter@engr.sgi.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Manfred Spraul <manfred@colorfullife.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Daniel Yeisley 2006-11-02 22:07:14 -08:00 committed by Linus Torvalds
parent d13adb6046
commit 7f6b8876c7
1 changed files with 1 additions and 1 deletions
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mm/slab.c
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@ -883,7 +883,7 @@ static void init_reap_node(int cpu)
if (node == MAX_NUMNODES)
node = first_node(node_online_map);
__get_cpu_var(reap_node) = node;
per_cpu(reap_node, cpu) = node;
}
static void next_reap_node(void)