1 files changed, 4 insertions, 0 deletions

diff --git a/mm/filemap.c b/mm/filemap.c
index dd51c68e2b86..bcc7372aebbc 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -119,6 +119,8 @@ void __remove_from_page_cache(struct page *page)
         page->mapping = NULL;
         mapping->nrpages--;
         __dec_zone_page_state(page, NR_FILE_PAGES);
+        if (PageSwapBacked(page))
+                __dec_zone_page_state(page, NR_SHMEM);
         BUG_ON(page_mapped(page));
 
         /*
@@ -431,6 +433,8 @@ int add_to_page_cache_locked(struct page *page, struct address_space *mapping,
                 if (likely(!error)) {
                         mapping->nrpages++;
                         __inc_zone_page_state(page, NR_FILE_PAGES);
+                        if (PageSwapBacked(page))
+                                __inc_zone_page_state(page, NR_SHMEM);
                         spin_unlock_irq(&mapping->tree_lock);
                 } else {
                         page->mapping = NULL;