mm: refactor inactive_file_is_low() to use get_lru_size()
authorJohannes Weiner <hannes@cmpxchg.org>
Sat, 23 Feb 2013 00:35:19 +0000 (16:35 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Sun, 24 Feb 2013 01:50:20 +0000 (17:50 -0800)
commite3790144c9091631a18564aa64db8a971da02c41
tree5bdfc979f120d647ed617893ab9e300c2b4913c5
parent860f2759d94bf9db637d85d75d074de88af54688
mm: refactor inactive_file_is_low() to use get_lru_size()

An inactive file list is considered low when its active counterpart is
bigger, regardless of whether it is a global zone LRU list or a memcg
zone LRU list.  The only difference is in how the LRU size is assessed.

get_lru_size() does the right thing for both global and memcg reclaim
situations.

Get rid of inactive_file_is_low_global() and
mem_cgroup_inactive_file_is_low() by using get_lru_size() and compare
the numbers in common code.

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