[PATCH] vfs: make helper function to_mnt_ns static

[Colin King]

From: Colin Ian King <colin.king@xxxxxxxxxxxxx>

The function to_mnt_ns is local to the source and does not need to be
in global scope, so make it static.

Cleans up sparse warning:
symbol 'to_mnt_ns' was not declared. Should it be static?

Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
---
 fs/namespace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/namespace.c b/fs/namespace.c
index 4e630dcb75c9..e7d2119656a4 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1641,7 +1641,7 @@ static bool is_mnt_ns_file(struct dentry *dentry)
 	       dentry->d_fsdata == &mntns_operations;
 }
 
-struct mnt_namespace *to_mnt_ns(struct ns_common *ns)
+static struct mnt_namespace *to_mnt_ns(struct ns_common *ns)
 {
 	return container_of(ns, struct mnt_namespace, ns);
 }
-- 
2.17.1