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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 07:17:38 -0700 |
| commit | edcf4748cd56adcdf0856cc99ef108a4ea3ac7fe (patch) | |
| tree | 317d477d08dea82f5eef2e9c17294d0f0639ea81 /mm | |
| parent | 6c0b13519d1c755d874e82c8fb8a6dcef0ee402c (diff) | |
| download | linux-3.10-edcf4748cd56adcdf0856cc99ef108a4ea3ac7fe.tar.gz linux-3.10-edcf4748cd56adcdf0856cc99ef108a4ea3ac7fe.tar.bz2 linux-3.10-edcf4748cd56adcdf0856cc99ef108a4ea3ac7fe.zip | |
mm: return boolean from page_has_private()
Make page_has_private() return a true boolean value and remove the double
negations from the two callsites using it for arithmetic.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Christoph Lameter <cl@linux-foundation.org>
Reviewed-by: Christoph Lameter <cl@linux-foundation.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')
| -rw-r--r-- | mm/migrate.c | 2 | ||||
| -rw-r--r-- | mm/vmscan.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/mm/migrate.c b/mm/migrate.c index e97e513fe89..16052e80aaa 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -272,7 +272,7 @@ static int migrate_page_move_mapping(struct address_space *mapping, pslot = radix_tree_lookup_slot(&mapping->page_tree, page_index(page)); - expected_count = 2 + !!page_has_private(page); + expected_count = 2 + page_has_private(page); if (page_count(page) != expected_count || (struct page *)radix_tree_deref_slot(pslot) != page) { spin_unlock_irq(&mapping->tree_lock); diff --git a/mm/vmscan.c b/mm/vmscan.c index 172119caebc..f5b5f029288 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -286,7 +286,7 @@ static inline int page_mapping_inuse(struct page *page) static inline int is_page_cache_freeable(struct page *page) { - return page_count(page) - !!page_has_private(page) == 2; + return page_count(page) - page_has_private(page) == 2; } static int may_write_to_queue(struct backing_dev_info *bdi) |