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authorKamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>2012-07-31 23:42:44 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2012-08-01 01:42:42 (GMT)
commitd845aa2c75bcff87dacf098378b5706b12d1588f (patch)
tree2b8f35b6dc8e1b264fe78541246434d07922f606 /mm/memcontrol.c
parent59b8e85c26e77d236ebdd61866ffc5e69c5f531d (diff)
downloadlinux-d845aa2c75bcff87dacf098378b5706b12d1588f.tar.xz
memcg: clean up force_empty_list() return value check
After bf544fdc241da8 "memcg: move charges to root cgroup if use_hierarchy=0 in mem_cgroup_move_hugetlb_parent()" mem_cgroup_move_parent() returns only -EBUSY or -EINVAL. So we can remove the -ENOMEM and -EINTR checks. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: Michal Hocko <mhocko@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memcontrol.c')
-rw-r--r--mm/memcontrol.c5
1 files changed, 0 insertions, 5 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 8062d45..a1f00f0 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -3653,8 +3653,6 @@ static int mem_cgroup_force_empty_list(struct mem_cgroup *memcg,
pc = lookup_page_cgroup(page);
ret = mem_cgroup_move_parent(page, pc, memcg, GFP_KERNEL);
- if (ret == -ENOMEM || ret == -EINTR)
- break;
if (ret == -EBUSY || ret == -EINVAL) {
/* found lock contention or "pc" is obsolete. */
@@ -3711,9 +3709,6 @@ move_account:
}
mem_cgroup_end_move(memcg);
memcg_oom_recover(memcg);
- /* it seems parent cgroup doesn't have enough mem */
- if (ret == -ENOMEM)
- goto try_to_free;
cond_resched();
/* "ret" should also be checked to ensure all lists are empty. */
} while (res_counter_read_u64(&memcg->res, RES_USAGE) > 0 || ret);