diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mm_inline.h | 22 | ||||
| -rw-r--r-- | include/linux/swap.h | 3 |
2 files changed, 25 insertions, 0 deletions
diff --git a/include/linux/mm_inline.h b/include/linux/mm_inline.h index 47762ca695a5..49cc68af01f8 100644 --- a/include/linux/mm_inline.h +++ b/include/linux/mm_inline.h @@ -38,3 +38,25 @@ del_page_from_lru(struct zone *zone, struct page *page) zone->nr_inactive--; } } + +/* + * Isolate one page from the LRU lists. + * + * - zone->lru_lock must be held + */ +static inline int __isolate_lru_page(struct page *page) +{ + if (unlikely(!TestClearPageLRU(page))) + return 0; + + if (get_page_testone(page)) { + /* + * It is being freed elsewhere + */ + __put_page(page); + SetPageLRU(page); + return -ENOENT; + } + + return 1; +} diff --git a/include/linux/swap.h b/include/linux/swap.h index 556617bcf7ac..a49112536c02 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -175,6 +175,9 @@ extern int try_to_free_pages(struct zone **, gfp_t); extern int shrink_all_memory(int); extern int vm_swappiness; +extern int isolate_lru_page(struct page *p); +extern int putback_lru_pages(struct list_head *l); + #ifdef CONFIG_MMU /* linux/mm/shmem.c */ extern int shmem_unuse(swp_entry_t entry, struct page *page); |