tree c2087da91edc48f98a01b32c7213300f7786b097
parent 7bdd143c37e591c254d0991ac398a53f3f9ef1af
author Johannes Weiner <hannes@cmpxchg.org> 1418255037 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1418262067 -0800

mm: memcontrol: remove unnecessary PCG_MEMSW memory+swap charge flag

Now that mem_cgroup_swapout() fully uncharges the page, every page that is
still in use when reaching mem_cgroup_uncharge() is known to carry both
the memory and the memory+swap charge.  Simplify the uncharge path and
remove the PCG_MEMSW page flag accordingly.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Hugh Dickins <hughd@google.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Reviewed-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>