81 		anon_vma->root = anon_vma;  in anon_vma_alloc()
109 	if (rwsem_is_locked(&anon_vma->root->rwsem)) {  in anon_vma_free()
222 static inline struct anon_vma *lock_anon_vma_root(struct anon_vma *root, struct anon_vma *anon_vma)  in lock_anon_vma_root()  argument
224 	struct anon_vma *new_root = anon_vma->root;  in lock_anon_vma_root()
225 	if (new_root != root) {  in lock_anon_vma_root()
226 		if (WARN_ON_ONCE(root))  in lock_anon_vma_root()
227 			up_write(&root->rwsem);  in lock_anon_vma_root()
228 		root = new_root;  in lock_anon_vma_root()
229 		down_write(&root->rwsem);  in lock_anon_vma_root()
231 	return root;  in lock_anon_vma_root()
234 static inline void unlock_anon_vma_root(struct anon_vma *root)  in unlock_anon_vma_root()  argument
236 	if (root)  in unlock_anon_vma_root()
237 		up_write(&root->rwsem);  in unlock_anon_vma_root()
255 	struct anon_vma *root = NULL;  in anon_vma_clone()  local
262 			unlock_anon_vma_root(root);  in anon_vma_clone()
263 			root = NULL;  in anon_vma_clone()
269 		root = lock_anon_vma_root(root, anon_vma);  in anon_vma_clone()
286 	unlock_anon_vma_root(root);  in anon_vma_clone()
343 	anon_vma->root = pvma->anon_vma->root;  in anon_vma_fork()
350 	get_anon_vma(anon_vma->root);  in anon_vma_fork()
370 	struct anon_vma *root = NULL;  in unlink_anon_vmas()  local
379 		root = lock_anon_vma_root(root, anon_vma);  in unlink_anon_vmas()
396 	unlock_anon_vma_root(root);  in unlink_anon_vmas()
510 	root_anon_vma = ACCESS_ONCE(anon_vma->root);  in page_lock_anon_vma_read()
598 		    vma->anon_vma->root != page__anon_vma->root)  in page_address_in_vma()
979 		anon_vma = anon_vma->root;  in __page_set_anon_rmap()
1008 	BUG_ON(page_anon_vma(page)->root != vma->anon_vma->root);  in __page_check_anon_rmap()
1639 	struct anon_vma *root = anon_vma->root;  in __put_anon_vma()  local
1642 	if (root != anon_vma && atomic_dec_and_test(&root->refcount))  in __put_anon_vma()
1643 		anon_vma_free(root);  in __put_anon_vma()
1793 		anon_vma = anon_vma->root;  in __hugepage_set_anon_rmap()