tree 0fe6e6902a488ad6c59ecee971fe64c81edbcce3
parent 401a8e1c1670085b8177330ca47d4f7c4ac88761
author Johannes Weiner <hannes@cmpxchg.org> 1253577779 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1253629057 -0700

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>