1 files changed, 2 insertions, 23 deletions

diff --git a/mm/vmscan.c b/mm/vmscan.c
index ba4e87df3fc6..d9a0e0d3aac7 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++;
                         /*