1110 		if (&mnt->mnt == current->fs->root.mnt ||  in do_umount()
1152 	if (&mnt->mnt == current->fs->root.mnt && !(flags & MNT_DETACH)) {  in do_umount()
2289 		struct user_namespace *user_ns, struct fs_struct *fs)  in dup_mnt_ns()  argument
2327 		if (fs) {  in dup_mnt_ns()
2328 			if (&p->mnt == fs->root.mnt) {  in dup_mnt_ns()
2329 				fs->root.mnt = mntget(&q->mnt);  in dup_mnt_ns()
2332 			if (&p->mnt == fs->pwd.mnt) {  in dup_mnt_ns()
2333 				fs->pwd.mnt = mntget(&q->mnt);  in dup_mnt_ns()
2528 	get_fs_root(current->fs, &root);  in SYSCALL_DEFINE2()
2615 	set_fs_pwd(current->fs, &root);  in init_mount_tree()
2616 	set_fs_root(current->fs, &root);  in init_mount_tree()
2722 	struct fs_struct *fs = current->fs;  in mntns_install()  local
2730 	if (fs->users != 1)  in mntns_install()
2745 	set_fs_pwd(fs, &root);  in mntns_install()
2746 	set_fs_root(fs, &root);  in mntns_install()