make vfs_ustat() static

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/statfs.c

@@ -216,7 +216,7 @@ SYSCALL_DEFINE3(fstatfs64, unsigned int, fd, size_t, sz, struct statfs64 __user
 	return error;
 }
 
-int vfs_ustat(dev_t dev, struct kstatfs *sbuf)
+static int vfs_ustat(dev_t dev, struct kstatfs *sbuf)
 {
 	struct super_block *s = user_get_super(dev);
 	int err;

include/linux/fs.h

@@ -2169,7 +2169,6 @@ extern int iterate_mounts(int (*)(struct vfsmount *, void *), void *,
 extern int vfs_statfs(const struct path *, struct kstatfs *);
 extern int user_statfs(const char __user *, struct kstatfs *);
 extern int fd_statfs(int, struct kstatfs *);
-extern int vfs_ustat(dev_t, struct kstatfs *);
 extern int freeze_super(struct super_block *super);
 extern int thaw_super(struct super_block *super);
 extern bool our_mnt(struct vfsmount *mnt);