[PATCH] fix OOM killing processes wrongly thought MPOL_BIND

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I only have CONFIG_NUMA=y for build testing: surprised when trying a memhog
to see lots of other processes killed with "No available memory (MPOL_BIND)".
memhog is killed correctly once we initialize nodemask in constrained_alloc().

Signed-off-by: Hugh Dickins <[email protected]>
---
Perhaps appropriate for 2.6.20-stable too - regression since 2.6.19.

 mm/oom_kill.c |    2 ++
 1 file changed, 2 insertions(+)

--- 2.6.21-rc7/mm/oom_kill.c	2007-03-26 07:30:54.000000000 +0100
+++ linux/mm/oom_kill.c	2007-04-18 20:18:21.000000000 +0100
@@ -176,6 +176,8 @@ static inline int constrained_alloc(stru
 	struct zone **z;
 	nodemask_t nodes;
 	int node;
+
+	nodes_clear(nodes);
 	/* node has memory ? */
 	for_each_online_node(node)
 		if (NODE_DATA(node)->node_present_pages)
-
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