86 		anon_vma->root = anon_vma;  in anon_vma_alloc()
114 	if (rwsem_is_locked(&anon_vma->root->rwsem)) {  in anon_vma_free()
227 static inline struct anon_vma *lock_anon_vma_root(struct anon_vma *root, struct anon_vma *anon_vma)  in lock_anon_vma_root()  argument
229 	struct anon_vma *new_root = anon_vma->root;  in lock_anon_vma_root()
230 	if (new_root != root) {  in lock_anon_vma_root()
231 		if (WARN_ON_ONCE(root))  in lock_anon_vma_root()
232 			up_write(&root->rwsem);  in lock_anon_vma_root()
233 		root = new_root;  in lock_anon_vma_root()
234 		down_write(&root->rwsem);  in lock_anon_vma_root()
236 	return root;  in lock_anon_vma_root()
239 static inline void unlock_anon_vma_root(struct anon_vma *root)  in unlock_anon_vma_root()  argument
241 	if (root)  in unlock_anon_vma_root()
242 		up_write(&root->rwsem);  in unlock_anon_vma_root()
260 	struct anon_vma *root = NULL;  in anon_vma_clone()  local
267 			unlock_anon_vma_root(root);  in anon_vma_clone()
268 			root = NULL;  in anon_vma_clone()
274 		root = lock_anon_vma_root(root, anon_vma);  in anon_vma_clone()
291 	unlock_anon_vma_root(root);  in anon_vma_clone()
348 	anon_vma->root = pvma->anon_vma->root;  in anon_vma_fork()
355 	get_anon_vma(anon_vma->root);  in anon_vma_fork()
375 	struct anon_vma *root = NULL;  in unlink_anon_vmas()  local
384 		root = lock_anon_vma_root(root, anon_vma);  in unlink_anon_vmas()
401 	unlock_anon_vma_root(root);  in unlink_anon_vmas()
515 	root_anon_vma = READ_ONCE(anon_vma->root);  in page_lock_anon_vma_read()
704 		    vma->anon_vma->root != page__anon_vma->root)  in page_address_in_vma()
1095 		anon_vma = anon_vma->root;  in __page_set_anon_rmap()
1124 	BUG_ON(page_anon_vma(page)->root != vma->anon_vma->root);  in __page_check_anon_rmap()
1536 	struct anon_vma *root = anon_vma->root;  in __put_anon_vma()  local
1539 	if (root != anon_vma && atomic_dec_and_test(&root->refcount))  in __put_anon_vma()
1540 		anon_vma_free(root);  in __put_anon_vma()
1689 		anon_vma = anon_vma->root;  in __hugepage_set_anon_rmap()