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mm, oom: ensure sysrq+f always passes valid zonelist

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With hotpluggable and memoryless nodes, it's possible that node 0 will
not be online, so use the first online node's zonelist rather than
hardcoding node 0 to pass a zonelist with all zones to the oom killer.

Signed-off-by: David Rientjes <rientjes@google.com>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
David Rientjes 2012-11-14 01:15:19 -08:00 committed by Greg Kroah-Hartman
parent 18e0749aa8
commit 5318609519
1 changed files with 2 additions and 1 deletions
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drivers/tty/sysrq.c
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@ -346,7 +346,8 @@ static struct sysrq_key_op sysrq_term_op = {
static void moom_callback(struct work_struct *ignored)
{
out_of_memory(node_zonelist(0, GFP_KERNEL), GFP_KERNEL, 0, NULL, true);
out_of_memory(node_zonelist(first_online_node, GFP_KERNEL), GFP_KERNEL,
0, NULL, true);
}
static DECLARE_WORK(moom_work, moom_callback);