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include/linux/nodemask.h: create next_node_in() helper

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Lots of code does

	node = next_node(node, XXX);
	if (node == MAX_NUMNODES)
		node = first_node(XXX);

so create next_node_in() to do this and use it in various places.

[[email protected]: use next_node_in() helper]
Acked-by: Vlastimil Babka <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Signed-off-by: Michal Hocko <[email protected]>
Cc: Xishi Qiu <[email protected]>
Cc: Joonsoo Kim <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Naoya Horiguchi <[email protected]>
Cc: Laura Abbott <[email protected]>
Cc: Hui Zhu <[email protected]>
Cc: Wang Xiaoqiang <[email protected]>
Cc: Johannes Weiner <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Andrew Morton 2016-05-19 17:10:58 -07:00 • committed by Linus Torvalds
commit 0edaf86cf1
11 changed files with 54 additions and 59 deletions
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13
mm/slab.c
View file

@ -522,22 +522,15 @@ static DEFINE_PER_CPU(unsigned long, slab_reap_node);
static void init_reap_node(int cpu)
{
int node;
node = next_node(cpu_to_mem(cpu), node_online_map);
if (node == MAX_NUMNODES)
node = first_node(node_online_map);
per_cpu(slab_reap_node, cpu) = node;
per_cpu(slab_reap_node, cpu) = next_node_in(cpu_to_mem(cpu),
node_online_map);
}
static void next_reap_node(void)
{
int node = __this_cpu_read(slab_reap_node);
node = next_node(node, node_online_map);
if (unlikely(node >= MAX_NUMNODES))
node = first_node(node_online_map);
node = next_node_in(node, node_online_map);
__this_cpu_write(slab_reap_node, node);
}