JFS: fix memory leak in __invalidate_metapages

Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>

fs/jfs/jfs_metapage.c

@@ -557,6 +557,7 @@ void __invalidate_metapages(struct inode *ip, s64 addr, int len)
 			if (page) {
 				block_invalidatepage(page, 0);
 				unlock_page(page);
+				page_cache_release(page);
 			}
 		}
 	}