ext2: remove the second argument of k[un]map_atomic()

Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Cong Wang <amwang@redhat.com>
diff --git a/fs/ext2/dir.c b/fs/ext2/dir.c
index d37df35..0f4f5c9 100644
--- a/fs/ext2/dir.c
+++ b/fs/ext2/dir.c
@@ -645,7 +645,7 @@
 		unlock_page(page);
 		goto fail;
 	}
-	kaddr = kmap_atomic(page, KM_USER0);
+	kaddr = kmap_atomic(page);
 	memset(kaddr, 0, chunk_size);
 	de = (struct ext2_dir_entry_2 *)kaddr;
 	de->name_len = 1;
@@ -660,7 +660,7 @@
 	de->inode = cpu_to_le32(parent->i_ino);
 	memcpy (de->name, "..\0", 4);
 	ext2_set_de_type (de, inode);
-	kunmap_atomic(kaddr, KM_USER0);
+	kunmap_atomic(kaddr);
 	err = ext2_commit_chunk(page, 0, chunk_size);
 fail:
 	page_cache_release(page);