diff options
Diffstat (limited to 'include/linux/page-flags.h')
| -rw-r--r-- | include/linux/page-flags.h | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index f58c9e68d3d8..6959827c9f62 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -69,12 +69,14 @@ #define PG_private 12 /* Has something at ->private */ #define PG_writeback 13 /* Page is under writeback */ #define PG_nosave 14 /* Used for system suspend/resume */ -#define PG_chainlock 15 /* lock bit for ->pte_chain */ +#define PG_maplock 15 /* Lock bit for rmap to ptes */ #define PG_direct 16 /* ->pte_chain points directly at pte */ #define PG_mappedtodisk 17 /* Has blocks allocated on-disk */ #define PG_reclaim 18 /* To be reclaimed asap */ #define PG_compound 19 /* Part of a compound page */ +#define PG_anon 20 /* Anonymous page: anon_vma in mapping*/ +#define PG_swapcache 21 /* Swap page: swp_entry_t in private */ /* @@ -298,24 +300,33 @@ extern void get_full_page_state(struct page_state *ret); #define SetPageCompound(page) set_bit(PG_compound, &(page)->flags) #define ClearPageCompound(page) clear_bit(PG_compound, &(page)->flags) -/* - * The PageSwapCache predicate doesn't use a PG_flag at this time, - * but it may again do so one day. - */ +#define PageAnon(page) test_bit(PG_anon, &(page)->flags) +#define SetPageAnon(page) set_bit(PG_anon, &(page)->flags) +#define ClearPageAnon(page) clear_bit(PG_anon, &(page)->flags) + #ifdef CONFIG_SWAP -extern struct address_space swapper_space; -#define PageSwapCache(page) ((page)->mapping == &swapper_space) +#define PageSwapCache(page) test_bit(PG_swapcache, &(page)->flags) +#define SetPageSwapCache(page) set_bit(PG_swapcache, &(page)->flags) +#define ClearPageSwapCache(page) clear_bit(PG_swapcache, &(page)->flags) #else -#define PageSwapCache(page) 0 +#define PageSwapCache(page) 0 #endif struct page; /* forward declaration */ int test_clear_page_dirty(struct page *page); +int __clear_page_dirty(struct page *page); +int test_clear_page_writeback(struct page *page); +int test_set_page_writeback(struct page *page); static inline void clear_page_dirty(struct page *page) { test_clear_page_dirty(page); } +static inline void set_page_writeback(struct page *page) +{ + test_set_page_writeback(page); +} + #endif /* PAGE_FLAGS_H */ |