mm: return boolean from page_is_file_cache()
authorJohannes Weiner <hannes@cmpxchg.org>
Tue, 22 Sep 2009 00:02:59 +0000 (17:02 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 22 Sep 2009 14:17:37 +0000 (07:17 -0700)
commit6c0b13519d1c755d874e82c8fb8a6dcef0ee402c
tree0fe6e6902a488ad6c59ecee971fe64c81edbcce3
parent401a8e1c1670085b8177330ca47d4f7c4ac88761
mm: return boolean from page_is_file_cache()

page_is_file_cache() has been used for both boolean checks and LRU
arithmetic, which was always a bit weird.

Now that page_lru_base_type() exists for LRU arithmetic, make
page_is_file_cache() a real predicate function and adjust the
boolean-using callsites to drop those pesky double negations.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
include/linux/mm_inline.h
mm/migrate.c
mm/swap.c
mm/vmscan.c