On Wed 14-11-12 01:15:19, David Rientjes wrote:
> 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.
Makes sense although I haven't seen a machine with no 0 node yet.
According to 13808910 this is indeed possible.
> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> Signed-off-by: David Rientjes <rientjes@xxxxxxxxxx>
Reviewed-by: Michal Hocko <mhocko@xxxxxxx>
> ---
> drivers/tty/sysrq.c | 3 ++-
> 1 files changed, 2 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c
> --- a/drivers/tty/sysrq.c
> +++ b/drivers/tty/sysrq.c
> @@ -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);
>
> --
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--
Michal Hocko
SUSE Labs
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