mm/memcg: mem_cgroup_relize_xxx_limit can guarantee memcg->res.limit <= memcg->memsw...

Signed-off-by: Wanpeng Li <liwp.linux@gmail.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index b11fb2f..ac87e79 100644 (file)
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -3416,7 +3416,7 @@ static int mem_cgroup_resize_limit(struct mem_cgroup *memcg,
                /*
                 * Rather than hide all in some function, I do this in
                 * open coded manner. You see what this really does.
-                * We have to guarantee memcg->res.limit < memcg->memsw.limit.
+                * We have to guarantee memcg->res.limit <= memcg->memsw.limit.
                 */
                mutex_lock(&set_limit_mutex);
                memswlimit = res_counter_read_u64(&memcg->memsw, RES_LIMIT);
@@ -3477,7 +3477,7 @@ static int mem_cgroup_resize_memsw_limit(struct mem_cgroup *memcg,
                /*
                 * Rather than hide all in some function, I do this in
                 * open coded manner. You see what this really does.
-                * We have to guarantee memcg->res.limit < memcg->memsw.limit.
+                * We have to guarantee memcg->res.limit <= memcg->memsw.limit.
                 */
                mutex_lock(&set_limit_mutex);
                memlimit = res_counter_read_u64(&memcg->res, RES_LIMIT);