diff --git a/fs/udf/super.c b/fs/udf/super.c
index 4a5c7c6..f99ff5d 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -959,9 +959,9 @@
 		(sizeof(struct buffer_head *) * nr_groups);
 
 	if (size <= PAGE_SIZE)
-		bitmap = kmalloc(size, GFP_KERNEL);
+		bitmap = kzalloc(size, GFP_KERNEL);
 	else
-		bitmap = vmalloc(size); /* TODO: get rid of vmalloc */
+		bitmap = vzalloc(size); /* TODO: get rid of vzalloc */
 
 	if (bitmap == NULL) {
 		udf_error(sb, __func__,
@@ -970,7 +970,6 @@
 		return NULL;
 	}
 
-	memset(bitmap, 0x00, size);
 	bitmap->s_block_bitmap = (struct buffer_head **)(bitmap + 1);
 	bitmap->s_nr_groups = nr_groups;
 	return bitmap;