From: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Date: Tue, 31 Jul 2012 23:42:42 +0000 (-0700)
Subject: memcg: remove check for signal_pending() during rmdir()
X-Git-Tag: upstream/snapshot3+hdmi~6896^2~87
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=59b8e85c26e77d236ebdd61866ffc5e69c5f531d;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

memcg: remove check for signal_pending() during rmdir()

After bf544fdc241da8 "memcg: move charges to root cgroup if
use_hierarchy=0 in mem_cgroup_move_hugetlb_parent()", no memory reclaim
will occur when removing a memory cgroup.  If -EINTR is returned here,
cgroup will show a warning.

We don't need to handle any user interruption signal.  Remove this.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: 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 1940ba8..8062d45 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -3691,9 +3691,6 @@ move_account:
 		ret = -EBUSY;
 		if (cgroup_task_count(cgrp) || !list_empty(&cgrp->children))
 			goto out;
-		ret = -EINTR;
-		if (signal_pending(current))
-			goto out;
 		/* This is for making all *used* pages to be on LRU. */
 		lru_add_drain_all();
 		drain_all_stock_sync(memcg);