mm: memcg: push !mm handling out to page cache charge function
authorJohannes Weiner <hannes@cmpxchg.org>
Mon, 7 Apr 2014 22:37:41 +0000 (15:37 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Mon, 7 Apr 2014 23:35:56 +0000 (16:35 -0700)
commit284f39afeaa4ab1409b8f43b29cdea3007960ee3
tree37aeaa6682139d81c14095740d7e6204e6f60b2a
parent1bec6b333e241a9db47d3939fb08a4e174ece02f
mm: memcg: push !mm handling out to page cache charge function

Only page cache charges can happen without an mm context, so push this
special case out of the inner core and into the cache charge function.

An ancient comment explains that the mm can also be NULL in case the
task is currently being migrated, but that is not actually true with the
current case, so just remove it.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/memcontrol.c