diff options
Diffstat (limited to 'include/linux/mmzone.h')
| -rw-r--r-- | include/linux/mmzone.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 1fb5a04530aa..acd6f9cb01bd 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -18,6 +18,8 @@ #include <linux/pageblock-flags.h> #include <linux/page-flags-layout.h> #include <linux/atomic.h> +#include <linux/mm_types.h> +#include <linux/page-flags.h> #include <asm/page.h> /* Free memory management - zoned buddy allocator. */ @@ -98,6 +100,50 @@ struct free_area { unsigned long nr_free; }; +/* Used for pages not on another list */ +static inline void add_to_free_area(struct page *page, struct free_area *area, + int migratetype) +{ + list_add(&page->lru, &area->free_list[migratetype]); + area->nr_free++; +} + +/* Used for pages not on another list */ +static inline void add_to_free_area_tail(struct page *page, struct free_area *area, + int migratetype) +{ + list_add_tail(&page->lru, &area->free_list[migratetype]); + area->nr_free++; +} + +/* Used for pages which are on another list */ +static inline void move_to_free_area(struct page *page, struct free_area *area, + int migratetype) +{ + list_move(&page->lru, &area->free_list[migratetype]); +} + +static inline struct page *get_page_from_free_area(struct free_area *area, + int migratetype) +{ + return list_first_entry_or_null(&area->free_list[migratetype], + struct page, lru); +} + +static inline void del_page_from_free_area(struct page *page, + struct free_area *area) +{ + list_del(&page->lru); + __ClearPageBuddy(page); + set_page_private(page, 0); + area->nr_free--; +} + +static inline bool free_area_empty(struct free_area *area, int migratetype) +{ + return list_empty(&area->free_list[migratetype]); +} + struct pglist_data; /* |