diff options
| -rw-r--r-- | mm/vmscan.c | 25 |
1 files changed, 2 insertions, 23 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index ba4e87d..d9a0e0d 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -262,27 +262,6 @@ unsigned long shrink_slab(unsigned long scanned, gfp_t gfp_mask, return ret; } -/* Called without lock on whether page is mapped, so answer is unstable */ -static inline int page_mapping_inuse(struct page *page) -{ - struct address_space *mapping; - - /* Page is in somebody's page tables. */ - if (page_mapped(page)) - return 1; - - /* Be more reluctant to reclaim swapcache than pagecache */ - if (PageSwapCache(page)) - return 1; - - mapping = page_mapping(page); - if (!mapping) - return 0; - - /* File is mmap'd by somebody? */ - return mapping_mapped(mapping); -} - static inline int is_page_cache_freeable(struct page *page) { /* @@ -606,7 +585,7 @@ static enum page_references page_check_references(struct page *page, if (vm_flags & VM_LOCKED) return PAGEREF_RECLAIM; - if (page_mapping_inuse(page)) + if (page_mapped(page)) return PAGEREF_ACTIVATE; /* Reclaim if clean, defer dirty pages to writeback */ @@ -1381,7 +1360,7 @@ static void shrink_active_list(unsigned long nr_pages, struct zone *zone, } /* page_referenced clears PageReferenced */ - if (page_mapping_inuse(page) && + if (page_mapped(page) && page_referenced(page, 0, sc->mem_cgroup, &vm_flags)) { nr_rotated++; /* |