tree f890e8ebe10bbfbf2252de20d1fb9d60c1b425b8
parent d046b770c9fc36ccb19c27afdb8322220108cbc7
author Vladimir Davydov <vdavydov@parallels.com> 1442959160 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1442959793 -0700

vmscan: fix sane_reclaim helper for legacy memcg

The sane_reclaim() helper is supposed to return false for memcg reclaim
if the legacy hierarchy is used, because the latter lacks dirty
throttling mechanism, and so it did before it was accidentally broken by
commit 33398cf2f360c ("memcg: export struct mem_cgroup").  Fix it.

Fixes: 33398cf2f360c ("memcg: export struct mem_cgroup")
Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>