include/linux/nodemask.h: create next_node_in() helper
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.
[mhocko@suse.com: use next_node_in() helper]
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Michal Hocko <mhocko@suse.com>
Cc: Xishi Qiu <qiuxishi@huawei.com>
Cc: Joonsoo Kim <js1304@gmail.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Laura Abbott <lauraa@codeaurora.org>
Cc: Hui Zhu <zhuhui@xiaomi.com>
Cc: Wang Xiaoqiang <wangxq10@lzu.edu.cn>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/slab.c b/mm/slab.c
index d81565a..c11bf50 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -522,22 +522,15 @@
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);
}