net/ipv6/ip6_fib.c

756 	struct fib6_node *pn = NULL;
812 		pn = fn;
848 	RCU_INIT_POINTER(ln->parent, pn);
851 		rcu_assign_pointer(pn->right, ln);
853 		rcu_assign_pointer(pn->left, ln);
867 	pn = rcu_dereference_protected(fn->parent,
905 		RCU_INIT_POINTER(in->parent, pn);
912 			rcu_assign_pointer(pn->right, in);
914 			rcu_assign_pointer(pn->left, in);
943 		RCU_INIT_POINTER(ln->parent, pn);
953 			rcu_assign_pointer(pn->right, ln);
955 			rcu_assign_pointer(pn->left, ln);
1391 	struct fib6_node *pn = NULL;
1417 	pn = fn;
1510 		if (pn != fn) {
1512 				rcu_dereference_protected(pn->leaf,
1516 				RCU_INIT_POINTER(pn->leaf, NULL);
1519 			if (!pn_leaf && !(pn->fn_flags & RTN_RTINFO)) {
1521 							   pn);
1526 				rcu_assign_pointer(pn->leaf, pn_leaf);
1812 		struct fib6_node *pn = rcu_dereference_protected(fn->parent,
1814 		struct fib6_node *pn_r = rcu_dereference_protected(pn->right,
1816 		struct fib6_node *pn_l = rcu_dereference_protected(pn->left,
1820 		struct fib6_info *pn_leaf = rcu_dereference_protected(pn->leaf,
1857 			return pn;
1861 		if (FIB6_SUBTREE(pn) == fn) {
1863 			RCU_INIT_POINTER(pn->subtree, NULL);
1869 				rcu_assign_pointer(pn->right, child);
1871 				rcu_assign_pointer(pn->left, child);
1877 				rcu_assign_pointer(child->parent, pn);
1889 					w->node = pn;
1910 		if (pn->fn_flags & RTN_RTINFO || FIB6_SUBTREE(pn))
1911 			return pn;
1913 		RCU_INIT_POINTER(pn->leaf, NULL);
1915 		fn = pn;
2079 	struct fib6_node *fn, *pn, *left, *right;
2140 			pn = rcu_dereference_protected(fn->parent, 1);
2141 			left = rcu_dereference_protected(pn->left, 1);
2142 			right = rcu_dereference_protected(pn->right, 1);
2143 			w->node = pn;
2145 			if (FIB6_SUBTREE(pn) == fn) {