496 		       struct extent_state *prealloc, u64 split)  in split_state()  argument
502 	prealloc->start = orig->start;  in split_state()
503 	prealloc->end = split - 1;  in split_state()
504 	prealloc->state = orig->state;  in split_state()
507 	node = tree_insert(&tree->state, &orig->rb_node, prealloc->end,  in split_state()
508 			   &prealloc->rb_node, NULL, NULL);  in split_state()
510 		free_extent_state(prealloc);  in split_state()
567 alloc_extent_state_atomic(struct extent_state *prealloc)  in alloc_extent_state_atomic()  argument
569 	if (!prealloc)  in alloc_extent_state_atomic()
570 		prealloc = alloc_extent_state(GFP_ATOMIC);  in alloc_extent_state_atomic()
572 	return prealloc;  in alloc_extent_state_atomic()
601 	struct extent_state *prealloc = NULL;  in __clear_extent_bit()  local
619 	if (!prealloc && gfpflags_allow_blocking(mask)) {  in __clear_extent_bit()
627 		prealloc = alloc_extent_state(mask);  in __clear_extent_bit()
686 		prealloc = alloc_extent_state_atomic(prealloc);  in __clear_extent_bit()
687 		BUG_ON(!prealloc);  in __clear_extent_bit()
688 		err = split_state(tree, state, prealloc, start);  in __clear_extent_bit()
692 		prealloc = NULL;  in __clear_extent_bit()
709 		prealloc = alloc_extent_state_atomic(prealloc);  in __clear_extent_bit()
710 		BUG_ON(!prealloc);  in __clear_extent_bit()
711 		err = split_state(tree, state, prealloc, end + 1);  in __clear_extent_bit()
718 		clear_state_bit(tree, prealloc, &bits, wake, changeset);  in __clear_extent_bit()
720 		prealloc = NULL;  in __clear_extent_bit()
735 	if (prealloc)  in __clear_extent_bit()
736 		free_extent_state(prealloc);  in __clear_extent_bit()
865 	struct extent_state *prealloc = NULL;  in __set_extent_bit()  local
877 	if (!prealloc && gfpflags_allow_blocking(mask)) {  in __set_extent_bit()
878 		prealloc = alloc_extent_state(mask);  in __set_extent_bit()
879 		BUG_ON(!prealloc);  in __set_extent_bit()
897 		prealloc = alloc_extent_state_atomic(prealloc);  in __set_extent_bit()
898 		BUG_ON(!prealloc);  in __set_extent_bit()
899 		err = insert_state(tree, prealloc, start, end,  in __set_extent_bit()
904 		cache_state(prealloc, cached_state);  in __set_extent_bit()
905 		prealloc = NULL;  in __set_extent_bit()
962 		prealloc = alloc_extent_state_atomic(prealloc);  in __set_extent_bit()
963 		BUG_ON(!prealloc);  in __set_extent_bit()
964 		err = split_state(tree, state, prealloc, start);  in __set_extent_bit()
968 		prealloc = NULL;  in __set_extent_bit()
999 		prealloc = alloc_extent_state_atomic(prealloc);  in __set_extent_bit()
1000 		BUG_ON(!prealloc);  in __set_extent_bit()
1006 		err = insert_state(tree, prealloc, start, this_end,  in __set_extent_bit()
1011 		cache_state(prealloc, cached_state);  in __set_extent_bit()
1012 		prealloc = NULL;  in __set_extent_bit()
1029 		prealloc = alloc_extent_state_atomic(prealloc);  in __set_extent_bit()
1030 		BUG_ON(!prealloc);  in __set_extent_bit()
1031 		err = split_state(tree, state, prealloc, end + 1);  in __set_extent_bit()
1035 		set_state_bits(tree, prealloc, &bits, changeset);  in __set_extent_bit()
1036 		cache_state(prealloc, cached_state);  in __set_extent_bit()
1037 		merge_state(tree, prealloc);  in __set_extent_bit()
1038 		prealloc = NULL;  in __set_extent_bit()
1046 	if (prealloc)  in __set_extent_bit()
1047 		free_extent_state(prealloc);  in __set_extent_bit()
1091 	struct extent_state *prealloc = NULL;  in convert_extent_bit()  local
1103 	if (!prealloc && gfpflags_allow_blocking(mask)) {  in convert_extent_bit()
1111 		prealloc = alloc_extent_state(mask);  in convert_extent_bit()
1112 		if (!prealloc && !first_iteration)  in convert_extent_bit()
1132 		prealloc = alloc_extent_state_atomic(prealloc);  in convert_extent_bit()
1133 		if (!prealloc) {  in convert_extent_bit()
1137 		err = insert_state(tree, prealloc, start, end,  in convert_extent_bit()
1141 		cache_state(prealloc, cached_state);  in convert_extent_bit()
1142 		prealloc = NULL;  in convert_extent_bit()
1186 		prealloc = alloc_extent_state_atomic(prealloc);  in convert_extent_bit()
1187 		if (!prealloc) {  in convert_extent_bit()
1191 		err = split_state(tree, state, prealloc, start);  in convert_extent_bit()
1194 		prealloc = NULL;  in convert_extent_bit()
1225 		prealloc = alloc_extent_state_atomic(prealloc);  in convert_extent_bit()
1226 		if (!prealloc) {  in convert_extent_bit()
1235 		err = insert_state(tree, prealloc, start, this_end,  in convert_extent_bit()
1239 		cache_state(prealloc, cached_state);  in convert_extent_bit()
1240 		prealloc = NULL;  in convert_extent_bit()
1251 		prealloc = alloc_extent_state_atomic(prealloc);  in convert_extent_bit()
1252 		if (!prealloc) {  in convert_extent_bit()
1257 		err = split_state(tree, state, prealloc, end + 1);  in convert_extent_bit()
1261 		set_state_bits(tree, prealloc, &bits, NULL);  in convert_extent_bit()
1262 		cache_state(prealloc, cached_state);  in convert_extent_bit()
1263 		clear_state_bit(tree, prealloc, &clear_bits, 0, NULL);  in convert_extent_bit()
1264 		prealloc = NULL;  in convert_extent_bit()
1272 	if (prealloc)  in convert_extent_bit()
1273 		free_extent_state(prealloc);  in convert_extent_bit()