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()
545 alloc_extent_state_atomic(struct extent_state *prealloc)  in alloc_extent_state_atomic()  argument
547 	if (!prealloc)  in alloc_extent_state_atomic()
548 		prealloc = alloc_extent_state(GFP_ATOMIC);  in alloc_extent_state_atomic()
550 	return prealloc;  in alloc_extent_state_atomic()
579 	struct extent_state *prealloc = NULL;  in clear_extent_bit()  local
597 	if (!prealloc && (mask & __GFP_WAIT)) {  in clear_extent_bit()
605 		prealloc = alloc_extent_state(mask);  in clear_extent_bit()
664 		prealloc = alloc_extent_state_atomic(prealloc);  in clear_extent_bit()
665 		BUG_ON(!prealloc);  in clear_extent_bit()
666 		err = split_state(tree, state, prealloc, start);  in clear_extent_bit()
670 		prealloc = NULL;  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, end + 1);  in clear_extent_bit()
695 		clear_state_bit(tree, prealloc, &bits, wake);  in clear_extent_bit()
697 		prealloc = NULL;  in clear_extent_bit()
712 	if (prealloc)  in clear_extent_bit()
713 		free_extent_state(prealloc);  in clear_extent_bit()
841 	struct extent_state *prealloc = NULL;  in __set_extent_bit()  local
853 	if (!prealloc && (mask & __GFP_WAIT)) {  in __set_extent_bit()
854 		prealloc = alloc_extent_state(mask);  in __set_extent_bit()
855 		BUG_ON(!prealloc);  in __set_extent_bit()
873 		prealloc = alloc_extent_state_atomic(prealloc);  in __set_extent_bit()
874 		BUG_ON(!prealloc);  in __set_extent_bit()
875 		err = insert_state(tree, prealloc, start, end,  in __set_extent_bit()
880 		cache_state(prealloc, cached_state);  in __set_extent_bit()
881 		prealloc = NULL;  in __set_extent_bit()
938 		prealloc = alloc_extent_state_atomic(prealloc);  in __set_extent_bit()
939 		BUG_ON(!prealloc);  in __set_extent_bit()
940 		err = split_state(tree, state, prealloc, start);  in __set_extent_bit()
944 		prealloc = NULL;  in __set_extent_bit()
975 		prealloc = alloc_extent_state_atomic(prealloc);  in __set_extent_bit()
976 		BUG_ON(!prealloc);  in __set_extent_bit()
982 		err = insert_state(tree, prealloc, start, this_end,  in __set_extent_bit()
987 		cache_state(prealloc, cached_state);  in __set_extent_bit()
988 		prealloc = NULL;  in __set_extent_bit()
1005 		prealloc = alloc_extent_state_atomic(prealloc);  in __set_extent_bit()
1006 		BUG_ON(!prealloc);  in __set_extent_bit()
1007 		err = split_state(tree, state, prealloc, end + 1);  in __set_extent_bit()
1011 		set_state_bits(tree, prealloc, &bits);  in __set_extent_bit()
1012 		cache_state(prealloc, cached_state);  in __set_extent_bit()
1013 		merge_state(tree, prealloc);  in __set_extent_bit()
1014 		prealloc = NULL;  in __set_extent_bit()
1022 	if (prealloc)  in __set_extent_bit()
1023 		free_extent_state(prealloc);  in __set_extent_bit()
1067 	struct extent_state *prealloc = NULL;  in convert_extent_bit()  local
1079 	if (!prealloc && (mask & __GFP_WAIT)) {  in convert_extent_bit()
1087 		prealloc = alloc_extent_state(mask);  in convert_extent_bit()
1088 		if (!prealloc && !first_iteration)  in convert_extent_bit()
1108 		prealloc = alloc_extent_state_atomic(prealloc);  in convert_extent_bit()
1109 		if (!prealloc) {  in convert_extent_bit()
1113 		err = insert_state(tree, prealloc, start, end,  in convert_extent_bit()
1117 		cache_state(prealloc, cached_state);  in convert_extent_bit()
1118 		prealloc = NULL;  in convert_extent_bit()
1162 		prealloc = alloc_extent_state_atomic(prealloc);  in convert_extent_bit()
1163 		if (!prealloc) {  in convert_extent_bit()
1167 		err = split_state(tree, state, prealloc, start);  in convert_extent_bit()
1170 		prealloc = NULL;  in convert_extent_bit()
1200 		prealloc = alloc_extent_state_atomic(prealloc);  in convert_extent_bit()
1201 		if (!prealloc) {  in convert_extent_bit()
1210 		err = insert_state(tree, prealloc, start, this_end,  in convert_extent_bit()
1214 		cache_state(prealloc, cached_state);  in convert_extent_bit()
1215 		prealloc = NULL;  in convert_extent_bit()
1226 		prealloc = alloc_extent_state_atomic(prealloc);  in convert_extent_bit()
1227 		if (!prealloc) {  in convert_extent_bit()
1232 		err = split_state(tree, state, prealloc, end + 1);  in convert_extent_bit()
1236 		set_state_bits(tree, prealloc, &bits);  in convert_extent_bit()
1237 		cache_state(prealloc, cached_state);  in convert_extent_bit()
1238 		clear_state_bit(tree, prealloc, &clear_bits, 0);  in convert_extent_bit()
1239 		prealloc = NULL;  in convert_extent_bit()
1247 	if (prealloc)  in convert_extent_bit()
1248 		free_extent_state(prealloc);  in convert_extent_bit()