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-rw-r--r--mm/vmscan.c25
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++;
/*

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