diff options
| -rw-r--r-- | include/linux/page-flags.h | 13 | ||||
| -rw-r--r-- | mm/migrate.c | 2 | ||||
| -rw-r--r-- | mm/vmscan.c | 2 |
3 files changed, 10 insertions, 7 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index d07c0bb2203..13de789f0a5 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -402,8 +402,8 @@ static inline void __ClearPageTail(struct page *page) */ #define PAGE_FLAGS_CHECK_AT_PREP ((1 << NR_PAGEFLAGS) - 1) -#endif /* !__GENERATING_BOUNDS_H */ - +#define PAGE_FLAGS_PRIVATE \ + (1 << PG_private | 1 << PG_private_2) /** * page_has_private - Determine if page has private stuff * @page: The page to be checked @@ -411,8 +411,11 @@ static inline void __ClearPageTail(struct page *page) * Determine if a page has private stuff, indicating that release routines * should be invoked upon it. */ -#define page_has_private(page) \ - ((page)->flags & ((1 << PG_private) | \ - (1 << PG_private_2))) +static inline int page_has_private(struct page *page) +{ + return !!(page->flags & PAGE_FLAGS_PRIVATE); +} + +#endif /* !__GENERATING_BOUNDS_H */ #endif /* PAGE_FLAGS_H */ 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) |