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 <[email protected]>
Reviewed-by: KOSAKI Motohiro <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Johannes Weiner 2009-09-21 17:02:59 -07:00 • committed by Linus Torvalds
commit 6c0b13519d
4 changed files with 7 additions and 11 deletions

View file

@ -189,7 +189,7 @@ void activate_page(struct page *page)
add_page_to_lru_list(zone, page, lru);
__count_vm_event(PGACTIVATE);
update_page_reclaim_stat(zone, page, !!file, 1);
update_page_reclaim_stat(zone, page, file, 1);
}
spin_unlock_irq(&zone->lru_lock);
}