[PATCH 3/3] overlay: fix mount parameters check for empty values

[Luis Henriques]

Now that parameters that have the flag 'fs_param_can_be_empty' set and
their value is NULL are handled as 'flag' type, we need to properly check
for empty (NULL) values.

Signed-off-by: Luis Henriques <lhenriques@xxxxxxx>
---
 fs/overlayfs/params.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/overlayfs/params.c b/fs/overlayfs/params.c
index 112b4b12f825..09428af6abc5 100644
--- a/fs/overlayfs/params.c
+++ b/fs/overlayfs/params.c
@@ -441,7 +441,7 @@ static int ovl_parse_param_lowerdir(const char *name, struct fs_context *fc)
 	/* drop all existing lower layers */
 	ovl_reset_lowerdirs(ctx);
 
-	if (!*name)
+	if (!name)
 		return 0;
 
 	if (*name == ':') {