1 files changed, 9 insertions, 2 deletions

diff --git a/mm/shmem.c b/mm/shmem.c
index 356dd995..4fb41c8 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1017,7 +1017,14 @@ int shmem_unuse(swp_entry_t entry, struct page *page)
 			goto out;
 	}
 	mutex_unlock(&shmem_swaplist_mutex);
-out:	return found;	/* 0 or 1 or -ENOMEM */
+	/*
+	 * Can some race bring us here?  We've been holding page lock,
+	 * so I think not; but would rather try again later than BUG()
+	 */
+	unlock_page(page);
+	page_cache_release(page);
+out:
+	return (found < 0) ? found : 0;
 }
 
 /*
@@ -1080,7 +1087,7 @@ static int shmem_writepage(struct page *page, struct writeback_control *wbc)
 		else
 			inode = NULL;
 		spin_unlock(&info->lock);
-		swap_duplicate(swap);
+		swap_shmem_alloc(swap);
 		BUG_ON(page_mapped(page));
 		page_cache_release(page);	/* pagecache ref */
 		swap_writepage(page, wbc);