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| author | Johannes Weiner <hannes@cmpxchg.org> | 2009-09-21 17:02:59 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-22 07:17:37 -0700 |
| commit | 6c0b13519d1c755d874e82c8fb8a6dcef0ee402c (patch) | |
| tree | 0fe6e6902a488ad6c59ecee971fe64c81edbcce3 /mm/migrate.c | |
| parent | 401a8e1c1670085b8177330ca47d4f7c4ac88761 (diff) | |
| download | lwn-6c0b13519d1c755d874e82c8fb8a6dcef0ee402c.tar.gz lwn-6c0b13519d1c755d874e82c8fb8a6dcef0ee402c.zip | |
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>
Diffstat (limited to 'mm/migrate.c')
| -rw-r--r-- | mm/migrate.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/mm/migrate.c b/mm/migrate.c index b535a2c1656c..e97e513fe898 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -68,7 +68,7 @@ int putback_lru_pages(struct list_head *l) list_for_each_entry_safe(page, page2, l, lru) { list_del(&page->lru); dec_zone_page_state(page, NR_ISOLATED_ANON + - !!page_is_file_cache(page)); + page_is_file_cache(page)); putback_lru_page(page); count++; } @@ -701,7 +701,7 @@ unlock: */ list_del(&page->lru); dec_zone_page_state(page, NR_ISOLATED_ANON + - !!page_is_file_cache(page)); + page_is_file_cache(page)); putback_lru_page(page); } @@ -751,7 +751,7 @@ int migrate_pages(struct list_head *from, local_irq_save(flags); list_for_each_entry(page, from, lru) __inc_zone_page_state(page, NR_ISOLATED_ANON + - !!page_is_file_cache(page)); + page_is_file_cache(page)); local_irq_restore(flags); if (!swapwrite) |