476 		       struct extent_state *prealloc, u64 split)  in split_state()  argument
482 	prealloc->start = orig->start;  in split_state()
483 	prealloc->end = split - 1;  in split_state()
484 	prealloc->state = orig->state;  in split_state()
487 	node = tree_insert(&tree->state, &orig->rb_node, prealloc->end,  in split_state()
488 			   &prealloc->rb_node, NULL, NULL);  in split_state()
490 		free_extent_state(prealloc);  in split_state()
549 alloc_extent_state_atomic(struct extent_state *prealloc)  in alloc_extent_state_atomic()  argument
551 	if (!prealloc)  in alloc_extent_state_atomic()
552 		prealloc = alloc_extent_state(GFP_ATOMIC);  in alloc_extent_state_atomic()
554 	return prealloc;  in alloc_extent_state_atomic()
584 	struct extent_state *prealloc = NULL;  in __clear_extent_bit()  local
602 	if (!prealloc && gfpflags_allow_blocking(mask)) {  in __clear_extent_bit()
610 		prealloc = alloc_extent_state(mask);  in __clear_extent_bit()
669 		prealloc = alloc_extent_state_atomic(prealloc);  in __clear_extent_bit()
670 		BUG_ON(!prealloc);  in __clear_extent_bit()
671 		err = split_state(tree, state, prealloc, start);  in __clear_extent_bit()
675 		prealloc = NULL;  in __clear_extent_bit()
692 		prealloc = alloc_extent_state_atomic(prealloc);  in __clear_extent_bit()
693 		BUG_ON(!prealloc);  in __clear_extent_bit()
694 		err = split_state(tree, state, prealloc, end + 1);  in __clear_extent_bit()
701 		clear_state_bit(tree, prealloc, &bits, wake, changeset);  in __clear_extent_bit()
703 		prealloc = NULL;  in __clear_extent_bit()
725 	if (prealloc)  in __clear_extent_bit()
726 		free_extent_state(prealloc);  in __clear_extent_bit()
850 	struct extent_state *prealloc = NULL;  in __set_extent_bit()  local
862 	if (!prealloc && gfpflags_allow_blocking(mask)) {  in __set_extent_bit()
870 		prealloc = alloc_extent_state(mask);  in __set_extent_bit()
888 		prealloc = alloc_extent_state_atomic(prealloc);  in __set_extent_bit()
889 		BUG_ON(!prealloc);  in __set_extent_bit()
890 		err = insert_state(tree, prealloc, start, end,  in __set_extent_bit()
895 		cache_state(prealloc, cached_state);  in __set_extent_bit()
896 		prealloc = NULL;  in __set_extent_bit()
953 		prealloc = alloc_extent_state_atomic(prealloc);  in __set_extent_bit()
954 		BUG_ON(!prealloc);  in __set_extent_bit()
955 		err = split_state(tree, state, prealloc, start);  in __set_extent_bit()
959 		prealloc = NULL;  in __set_extent_bit()
990 		prealloc = alloc_extent_state_atomic(prealloc);  in __set_extent_bit()
991 		BUG_ON(!prealloc);  in __set_extent_bit()
997 		err = insert_state(tree, prealloc, start, this_end,  in __set_extent_bit()
1002 		cache_state(prealloc, cached_state);  in __set_extent_bit()
1003 		prealloc = NULL;  in __set_extent_bit()
1020 		prealloc = alloc_extent_state_atomic(prealloc);  in __set_extent_bit()
1021 		BUG_ON(!prealloc);  in __set_extent_bit()
1022 		err = split_state(tree, state, prealloc, end + 1);  in __set_extent_bit()
1026 		set_state_bits(tree, prealloc, &bits, changeset);  in __set_extent_bit()
1027 		cache_state(prealloc, cached_state);  in __set_extent_bit()
1028 		merge_state(tree, prealloc);  in __set_extent_bit()
1029 		prealloc = NULL;  in __set_extent_bit()
1043 	if (prealloc)  in __set_extent_bit()
1044 		free_extent_state(prealloc);  in __set_extent_bit()
1082 	struct extent_state *prealloc = NULL;  in convert_extent_bit()  local
1094 	if (!prealloc) {  in convert_extent_bit()
1102 		prealloc = alloc_extent_state(GFP_NOFS);  in convert_extent_bit()
1103 		if (!prealloc && !first_iteration)  in convert_extent_bit()
1123 		prealloc = alloc_extent_state_atomic(prealloc);  in convert_extent_bit()
1124 		if (!prealloc) {  in convert_extent_bit()
1128 		err = insert_state(tree, prealloc, start, end,  in convert_extent_bit()
1132 		cache_state(prealloc, cached_state);  in convert_extent_bit()
1133 		prealloc = NULL;  in convert_extent_bit()
1177 		prealloc = alloc_extent_state_atomic(prealloc);  in convert_extent_bit()
1178 		if (!prealloc) {  in convert_extent_bit()
1182 		err = split_state(tree, state, prealloc, start);  in convert_extent_bit()
1185 		prealloc = NULL;  in convert_extent_bit()
1216 		prealloc = alloc_extent_state_atomic(prealloc);  in convert_extent_bit()
1217 		if (!prealloc) {  in convert_extent_bit()
1226 		err = insert_state(tree, prealloc, start, this_end,  in convert_extent_bit()
1230 		cache_state(prealloc, cached_state);  in convert_extent_bit()
1231 		prealloc = NULL;  in convert_extent_bit()
1242 		prealloc = alloc_extent_state_atomic(prealloc);  in convert_extent_bit()
1243 		if (!prealloc) {  in convert_extent_bit()
1248 		err = split_state(tree, state, prealloc, end + 1);  in convert_extent_bit()
1252 		set_state_bits(tree, prealloc, &bits, NULL);  in convert_extent_bit()
1253 		cache_state(prealloc, cached_state);  in convert_extent_bit()
1254 		clear_state_bit(tree, prealloc, &clear_bits, 0, NULL);  in convert_extent_bit()
1255 		prealloc = NULL;  in convert_extent_bit()
1269 	if (prealloc)  in convert_extent_bit()
1270 		free_extent_state(prealloc);  in convert_extent_bit()