44 	return strlcpy(buf, kn->parent ? kn->name : "/", buflen);  in kernfs_name_locked()
65 		kn = kn->parent;  in kernfs_path_locked()
66 	} while (kn && kn->parent);  in kernfs_path_locked()
109 		kn = kn->parent;  in kernfs_path_len()
110 	} while (kn && kn->parent);  in kernfs_path_len()
190 	struct kernfs_node *parent;  in kernfs_get_parent()  local
194 	parent = kn->parent;  in kernfs_get_parent()
195 	kernfs_get(parent);  in kernfs_get_parent()
198 	return parent;  in kernfs_get_parent()
259 	struct rb_node **node = &kn->parent->dir.children.rb_node;  in kernfs_link_sibling()
260 	struct rb_node *parent = NULL;  in kernfs_link_sibling()  local
267 		parent = *node;  in kernfs_link_sibling()
278 	rb_link_node(&kn->rb, parent, node);  in kernfs_link_sibling()
279 	rb_insert_color(&kn->rb, &kn->parent->dir.children);  in kernfs_link_sibling()
283 		kn->parent->dir.subdirs++;  in kernfs_link_sibling()
305 		kn->parent->dir.subdirs--;  in kernfs_unlink_sibling()
307 	rb_erase(&kn->rb, &kn->parent->dir.children);  in kernfs_unlink_sibling()
418 	struct kernfs_node *parent;  in kernfs_put()  local
429 	parent = kn->parent;  in kernfs_put()
433 		  parent ? parent->name : "", kn->name, atomic_read(&kn->active));  in kernfs_put()
450 	kn = parent;  in kernfs_put()
481 	if (dentry->d_parent->d_fsdata != kn->parent)  in kernfs_dop_revalidate()
489 	if (kn->parent && kernfs_ns_enabled(kn->parent) &&  in kernfs_dop_revalidate()
573 struct kernfs_node *kernfs_new_node(struct kernfs_node *parent,  in kernfs_new_node()  argument
579 	kn = __kernfs_new_node(kernfs_root(parent), name, mode, flags);  in kernfs_new_node()
581 		kernfs_get(parent);  in kernfs_new_node()
582 		kn->parent = parent;  in kernfs_new_node()
601 	struct kernfs_node *parent = kn->parent;  in kernfs_add_one()  local
609 	has_ns = kernfs_ns_enabled(parent);  in kernfs_add_one()
611 		 has_ns ? "required" : "invalid", parent->name, kn->name))  in kernfs_add_one()
614 	if (kernfs_type(parent) != KERNFS_DIR)  in kernfs_add_one()
618 	if (parent->flags & KERNFS_EMPTY_DIR)  in kernfs_add_one()
621 	if ((parent->flags & KERNFS_ACTIVATED) && !kernfs_active(parent))  in kernfs_add_one()
631 	ps_iattr = parent->iattr;  in kernfs_add_one()
664 static struct kernfs_node *kernfs_find_ns(struct kernfs_node *parent,  in kernfs_find_ns()  argument
668 	struct rb_node *node = parent->dir.children.rb_node;  in kernfs_find_ns()
669 	bool has_ns = kernfs_ns_enabled(parent);  in kernfs_find_ns()
676 		     has_ns ? "required" : "invalid", parent->name, name);  in kernfs_find_ns()
707 struct kernfs_node *kernfs_find_and_get_ns(struct kernfs_node *parent,  in kernfs_find_and_get_ns()  argument
713 	kn = kernfs_find_ns(parent, name, ns);  in kernfs_find_and_get_ns()
787 struct kernfs_node *kernfs_create_dir_ns(struct kernfs_node *parent,  in kernfs_create_dir_ns()  argument
795 	kn = kernfs_new_node(parent, name, mode | S_IFDIR, KERNFS_DIR);  in kernfs_create_dir_ns()
799 	kn->dir.root = parent->dir.root;  in kernfs_create_dir_ns()
819 struct kernfs_node *kernfs_create_empty_dir(struct kernfs_node *parent,  in kernfs_create_empty_dir()  argument
826 	kn = kernfs_new_node(parent, name, S_IRUGO|S_IXUGO|S_IFDIR, KERNFS_DIR);  in kernfs_create_empty_dir()
831 	kn->dir.root = parent->dir.root;  in kernfs_create_empty_dir()
849 	struct kernfs_node *parent = dentry->d_parent->d_fsdata;  in kernfs_iop_lookup()  local
856 	if (kernfs_ns_enabled(parent))  in kernfs_iop_lookup()
859 	kn = kernfs_find_ns(parent, dentry->d_name.name, ns);  in kernfs_iop_lookup()
886 	struct kernfs_node *parent = dir->i_private;  in kernfs_iop_mkdir()  local
887 	struct kernfs_syscall_ops *scops = kernfs_root(parent)->syscall_ops;  in kernfs_iop_mkdir()
893 	if (!kernfs_get_active(parent))  in kernfs_iop_mkdir()
896 	ret = scops->mkdir(parent, dentry->d_name.name, mode);  in kernfs_iop_mkdir()
898 	kernfs_put_active(parent);  in kernfs_iop_mkdir()
1013 	return pos->parent;  in kernfs_next_descendant_post()
1040 		WARN_ON_ONCE(pos->parent && RB_EMPTY_NODE(&pos->rb));  in kernfs_activate()
1061 	if (!kn || (kn->parent && RB_EMPTY_NODE(&kn->rb)))  in __kernfs_remove()
1099 		if (!pos->parent || kernfs_unlink_sibling(pos)) {  in __kernfs_remove()
1101 				pos->parent ? pos->parent->iattr : NULL;  in __kernfs_remove()
1269 int kernfs_remove_by_name_ns(struct kernfs_node *parent, const char *name,  in kernfs_remove_by_name_ns()  argument
1274 	if (!parent) {  in kernfs_remove_by_name_ns()
1282 	kn = kernfs_find_ns(parent, name, ns);  in kernfs_remove_by_name_ns()
1309 	if (!kn->parent)  in kernfs_rename_ns()
1320 	if ((kn->parent == new_parent) && (kn->ns == new_ns) &&  in kernfs_rename_ns()
1347 	old_parent = kn->parent;  in kernfs_rename_ns()
1348 	kn->parent = new_parent;  in kernfs_rename_ns()
1383 	struct kernfs_node *parent, loff_t hash, struct kernfs_node *pos)  in kernfs_dir_pos()  argument
1387 			pos->parent == parent && hash == pos->hash;  in kernfs_dir_pos()
1393 		struct rb_node *node = parent->dir.children.rb_node;  in kernfs_dir_pos()
1417 	struct kernfs_node *parent, ino_t ino, struct kernfs_node *pos)  in kernfs_dir_next_pos()  argument
1419 	pos = kernfs_dir_pos(ns, parent, ino, pos);  in kernfs_dir_next_pos()
1435 	struct kernfs_node *parent = dentry->d_fsdata;  in kernfs_fop_readdir()  local
1443 	if (kernfs_ns_enabled(parent))  in kernfs_fop_readdir()
1446 	for (pos = kernfs_dir_pos(ns, parent, ctx->pos, pos);  in kernfs_fop_readdir()
1448 	     pos = kernfs_dir_next_pos(ns, parent, ctx->pos, pos)) {  in kernfs_fop_readdir()