mm: memcontrol: remove stale page_cgroup_lock comment

There is no cgroup-specific page lock anymore.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
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 031ca34..78cb3b0 100644 (file)
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2467,10 +2467,6 @@ static void commit_charge(struct page *page, struct mem_cgroup *memcg,
        int isolated;
 
        VM_BUG_ON_PAGE(pc->mem_cgroup, page);
-       /*
-        * we don't need page_cgroup_lock about tail pages, becase they are not
-        * accessed by any other context at this point.
-        */
 
        /*
         * In some cases, SwapCache and FUSE(splice_buf->radixtree), the page