tree 2fc9b86f2fc86e7a720b4088aa0a46d4ae1cf909
parent 30bdbb78009e67767983085e302bec6d97afc679
author Vladimir Davydov <vdavydov@virtuozzo.com> 1454461069 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1454516923 -0800

mm/vmpressure.c: fix subtree pressure detection

When vmpressure is called for the entire subtree under pressure we
mistakenly use vmpressure->scanned instead of vmpressure->tree_scanned
when checking if vmpressure work is to be scheduled.  This results in
suppressing all vmpressure events in the legacy cgroup hierarchy.  Fix it.

Fixes: 8e8ae645249b ("mm: memcontrol: hook up vmpressure to socket pressure")
Signed-off-by: Vladimir Davydov <vdavydov@virtuozzo.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>