158 static struct extent_state *alloc_extent_state_atomic(struct extent_state *prealloc)  in alloc_extent_state_atomic()  argument
160 	if (!prealloc)  in alloc_extent_state_atomic()
161 		prealloc = alloc_extent_state(GFP_ATOMIC);  in alloc_extent_state_atomic()
163 	return prealloc;  in alloc_extent_state_atomic()
460 		       struct extent_state *prealloc, u64 split)  in split_state()  argument
468 	prealloc->start = orig->start;  in split_state()
469 	prealloc->end = split - 1;  in split_state()
470 	prealloc->state = orig->state;  in split_state()
481 		if (prealloc->end < entry->start) {  in split_state()
483 		} else if (prealloc->end > entry->end) {  in split_state()
486 			free_extent_state(prealloc);  in split_state()
491 	rb_link_node(&prealloc->rb_node, parent, node);  in split_state()
492 	rb_insert_color(&prealloc->rb_node, &tree->state);  in split_state()
555 	struct extent_state *prealloc = NULL;  in __clear_extent_bit()  local
575 	if (!prealloc && gfpflags_allow_blocking(mask)) {  in __clear_extent_bit()
583 		prealloc = alloc_extent_state(mask);  in __clear_extent_bit()
638 		prealloc = alloc_extent_state_atomic(prealloc);  in __clear_extent_bit()
639 		BUG_ON(!prealloc);  in __clear_extent_bit()
640 		err = split_state(tree, state, prealloc, start);  in __clear_extent_bit()
644 		prealloc = NULL;  in __clear_extent_bit()
659 		prealloc = alloc_extent_state_atomic(prealloc);  in __clear_extent_bit()
660 		BUG_ON(!prealloc);  in __clear_extent_bit()
661 		err = split_state(tree, state, prealloc, end + 1);  in __clear_extent_bit()
668 		clear_state_bit(tree, prealloc, bits, wake, changeset);  in __clear_extent_bit()
670 		prealloc = NULL;  in __clear_extent_bit()
692 	if (prealloc)  in __clear_extent_bit()
693 		free_extent_state(prealloc);  in __clear_extent_bit()
953 	struct extent_state *prealloc = NULL;  in __set_extent_bit()  local
969 	if (!prealloc && gfpflags_allow_blocking(mask)) {  in __set_extent_bit()
977 		prealloc = alloc_extent_state(mask);  in __set_extent_bit()
993 		prealloc = alloc_extent_state_atomic(prealloc);  in __set_extent_bit()
994 		BUG_ON(!prealloc);  in __set_extent_bit()
995 		prealloc->start = start;  in __set_extent_bit()
996 		prealloc->end = end;  in __set_extent_bit()
997 		insert_state_fast(tree, prealloc, p, parent, bits, changeset);  in __set_extent_bit()
998 		cache_state(prealloc, cached_state);  in __set_extent_bit()
999 		prealloc = NULL;  in __set_extent_bit()
1064 		prealloc = alloc_extent_state_atomic(prealloc);  in __set_extent_bit()
1065 		BUG_ON(!prealloc);  in __set_extent_bit()
1066 		err = split_state(tree, state, prealloc, start);  in __set_extent_bit()
1070 		prealloc = NULL;  in __set_extent_bit()
1101 		prealloc = alloc_extent_state_atomic(prealloc);  in __set_extent_bit()
1102 		BUG_ON(!prealloc);  in __set_extent_bit()
1108 		prealloc->start = start;  in __set_extent_bit()
1109 		prealloc->end = this_end;  in __set_extent_bit()
1110 		err = insert_state(tree, prealloc, bits, changeset);  in __set_extent_bit()
1114 		cache_state(prealloc, cached_state);  in __set_extent_bit()
1115 		prealloc = NULL;  in __set_extent_bit()
1132 		prealloc = alloc_extent_state_atomic(prealloc);  in __set_extent_bit()
1133 		BUG_ON(!prealloc);  in __set_extent_bit()
1134 		err = split_state(tree, state, prealloc, end + 1);  in __set_extent_bit()
1138 		set_state_bits(tree, prealloc, bits, changeset);  in __set_extent_bit()
1139 		cache_state(prealloc, cached_state);  in __set_extent_bit()
1140 		merge_state(tree, prealloc);  in __set_extent_bit()
1141 		prealloc = NULL;  in __set_extent_bit()
1155 	if (prealloc)  in __set_extent_bit()
1156 		free_extent_state(prealloc);  in __set_extent_bit()
1192 	struct extent_state *prealloc = NULL;  in convert_extent_bit()  local
1205 	if (!prealloc) {  in convert_extent_bit()
1213 		prealloc = alloc_extent_state(GFP_NOFS);  in convert_extent_bit()
1214 		if (!prealloc && !first_iteration)  in convert_extent_bit()
1232 		prealloc = alloc_extent_state_atomic(prealloc);  in convert_extent_bit()
1233 		if (!prealloc) {  in convert_extent_bit()
1237 		prealloc->start = start;  in convert_extent_bit()
1238 		prealloc->end = end;  in convert_extent_bit()
1239 		insert_state_fast(tree, prealloc, p, parent, bits, NULL);  in convert_extent_bit()
1240 		cache_state(prealloc, cached_state);  in convert_extent_bit()
1241 		prealloc = NULL;  in convert_extent_bit()
1283 		prealloc = alloc_extent_state_atomic(prealloc);  in convert_extent_bit()
1284 		if (!prealloc) {  in convert_extent_bit()
1288 		err = split_state(tree, state, prealloc, start);  in convert_extent_bit()
1291 		prealloc = NULL;  in convert_extent_bit()
1321 		prealloc = alloc_extent_state_atomic(prealloc);  in convert_extent_bit()
1322 		if (!prealloc) {  in convert_extent_bit()
1331 		prealloc->start = start;  in convert_extent_bit()
1332 		prealloc->end = this_end;  in convert_extent_bit()
1333 		err = insert_state(tree, prealloc, bits, NULL);  in convert_extent_bit()
1336 		cache_state(prealloc, cached_state);  in convert_extent_bit()
1337 		prealloc = NULL;  in convert_extent_bit()
1348 		prealloc = alloc_extent_state_atomic(prealloc);  in convert_extent_bit()
1349 		if (!prealloc) {  in convert_extent_bit()
1354 		err = split_state(tree, state, prealloc, end + 1);  in convert_extent_bit()
1358 		set_state_bits(tree, prealloc, bits, NULL);  in convert_extent_bit()
1359 		cache_state(prealloc, cached_state);  in convert_extent_bit()
1360 		clear_state_bit(tree, prealloc, clear_bits, 0, NULL);  in convert_extent_bit()
1361 		prealloc = NULL;  in convert_extent_bit()
1375 	if (prealloc)  in convert_extent_bit()
1376 		free_extent_state(prealloc);  in convert_extent_bit()