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-rw-r--r--include/linux/swap.h1
-rw-r--r--mm/util.c5
2 files changed, 2 insertions, 4 deletions
diff --git a/include/linux/swap.h b/include/linux/swap.h
index 24db914..c03c139 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -447,6 +447,7 @@ mem_cgroup_uncharge_swapcache(struct page *page, swp_entry_t ent, bool swapout)
#else /* CONFIG_SWAP */
+#define swap_address_space(entry) (NULL)
#define get_nr_swap_pages() 0L
#define total_swap_pages 0L
#define total_swapcache_pages() 0UL
diff --git a/mm/util.c b/mm/util.c
index 7441c41..eaf63fc2 100644
--- a/mm/util.c
+++ b/mm/util.c
@@ -388,15 +388,12 @@ struct address_space *page_mapping(struct page *page)
struct address_space *mapping = page->mapping;
VM_BUG_ON(PageSlab(page));
-#ifdef CONFIG_SWAP
if (unlikely(PageSwapCache(page))) {
swp_entry_t entry;
entry.val = page_private(page);
mapping = swap_address_space(entry);
- } else
-#endif
- if ((unsigned long)mapping & PAGE_MAPPING_ANON)
+ } else if ((unsigned long)mapping & PAGE_MAPPING_ANON)
mapping = NULL;
return mapping;
}
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