| #ifndef _MMAP_HACK_H |
| #define _MMAP_HACK_H |
| |
| /* |
| * FIXME: copied from mm/internal.h. We should move some functions to |
| * mm/, then share codes. |
| */ |
| static inline void mlock_migrate_page(struct page *newpage, struct page *page) |
| { |
| if (TestClearPageMlocked(page)) { |
| unsigned long flags; |
| int nr_pages = hpage_nr_pages(page); |
| |
| local_irq_save(flags); |
| __mod_zone_page_state(page_zone(page), NR_MLOCK, -nr_pages); |
| SetPageMlocked(newpage); |
| __mod_zone_page_state(page_zone(newpage), NR_MLOCK, nr_pages); |
| local_irq_restore(flags); |
| #if 0 |
| /* |
| * FIXME: maybe, we should remove page from LRU, then |
| * putback to LRU. With it, Unevictable will be removed. |
| * |
| * if (!isolate_lru_page(page)) |
| * putback_lru_page(page); |
| */ |
| BUG_ON(PageUnevictable(page)); |
| #endif |
| } |
| } |
| |
| #ifdef CONFIG_TUX3_MMAP |
| int page_cow_file(struct page *oldpage, struct page *newpage); |
| #else |
| static inline int page_cow_file(struct page *oldpage, struct page *newpage) |
| { |
| return 0; |
| } |
| #endif |
| |
| #endif /* !_MMAP_HACK_H */ |
