constify mnt_has_parent()

Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/mount.h b/fs/mount.h
index b8beafdd6d240d4bc865df0b788df2e7c66e5427..c4d417cd7953c8b761d645c8e12f2d4c056b2045 100644 (file)
--- a/fs/mount.h
+++ b/fs/mount.h
@@ -102,7 +102,7 @@ static inline struct mount *real_mount(struct vfsmount *mnt)
        return container_of(mnt, struct mount, mnt);
 }
 
-static inline int mnt_has_parent(struct mount *mnt)
+static inline int mnt_has_parent(const struct mount *mnt)
 {
        return mnt != mnt->mnt_parent;
 }