memcg: fold __mem_cgroup_move_account into caller

It is one logical function, no need to have it split up.

Also, get rid of some checks from the inner function that ensured the
sanity of the outer function.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 0 insertions, 5 deletions

diff --git a/include/linux/page_cgroup.h b/include/linux/page_cgroup.h
index 363bbc8b0f49..6b63679ce8a1 100644
--- a/include/linux/page_cgroup.h
+++ b/include/linux/page_cgroup.h
@@ -99,11 +99,6 @@ static inline void unlock_page_cgroup(struct page_cgroup *pc)
         bit_spin_unlock(PCG_LOCK, &pc->flags);
 }
 
-static inline int page_is_cgroup_locked(struct page_cgroup *pc)
-{
-        return bit_spin_is_locked(PCG_LOCK, &pc->flags);
-}
-
 static inline void move_lock_page_cgroup(struct page_cgroup *pc,
         unsigned long *flags)
 {