283 	struct btrfs_key key;  in btrfs_lookup_csums_range()  local
306 	key.objectid = BTRFS_EXTENT_CSUM_OBJECTID;  in btrfs_lookup_csums_range()
307 	key.offset = start;  in btrfs_lookup_csums_range()
308 	key.type = BTRFS_EXTENT_CSUM_KEY;  in btrfs_lookup_csums_range()
310 	ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);  in btrfs_lookup_csums_range()
315 		btrfs_item_key_to_cpu(leaf, &key, path->slots[0] - 1);  in btrfs_lookup_csums_range()
316 		if (key.objectid == BTRFS_EXTENT_CSUM_OBJECTID &&  in btrfs_lookup_csums_range()
317 		    key.type == BTRFS_EXTENT_CSUM_KEY) {  in btrfs_lookup_csums_range()
318 			offset = (start - key.offset) >>  in btrfs_lookup_csums_range()
337 		btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in btrfs_lookup_csums_range()
338 		if (key.objectid != BTRFS_EXTENT_CSUM_OBJECTID ||  in btrfs_lookup_csums_range()
339 		    key.type != BTRFS_EXTENT_CSUM_KEY)  in btrfs_lookup_csums_range()
342 		btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in btrfs_lookup_csums_range()
343 		if (key.offset > end)  in btrfs_lookup_csums_range()
346 		if (key.offset > start)  in btrfs_lookup_csums_range()
347 			start = key.offset;  in btrfs_lookup_csums_range()
350 		csum_end = key.offset + (size / csum_size) * root->sectorsize;  in btrfs_lookup_csums_range()
373 			offset = (start - key.offset) >>  in btrfs_lookup_csums_range()
502 				       struct btrfs_key *key,  in truncate_one_csum()  argument
514 	csum_end += key->offset;  in truncate_one_csum()
516 	if (key->offset < bytenr && csum_end <= end_byte) {  in truncate_one_csum()
523 		u32 new_size = (bytenr - key->offset) >> blocksize_bits;  in truncate_one_csum()
526 	} else if (key->offset >= bytenr && csum_end > end_byte &&  in truncate_one_csum()
527 		   end_byte > key->offset) {  in truncate_one_csum()
539 		key->offset = end_byte;  in truncate_one_csum()
540 		btrfs_set_item_key_safe(trans, root, path, key);  in truncate_one_csum()
554 	struct btrfs_key key;  in btrfs_del_csums()  local
569 		key.objectid = BTRFS_EXTENT_CSUM_OBJECTID;  in btrfs_del_csums()
570 		key.offset = end_byte - 1;  in btrfs_del_csums()
571 		key.type = BTRFS_EXTENT_CSUM_KEY;  in btrfs_del_csums()
574 		ret = btrfs_search_slot(trans, root, &key, path, -1, 1);  in btrfs_del_csums()
584 		btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in btrfs_del_csums()
586 		if (key.objectid != BTRFS_EXTENT_CSUM_OBJECTID ||  in btrfs_del_csums()
587 		    key.type != BTRFS_EXTENT_CSUM_KEY) {  in btrfs_del_csums()
591 		if (key.offset >= end_byte)  in btrfs_del_csums()
596 		csum_end += key.offset;  in btrfs_del_csums()
603 		if (key.offset >= bytenr && csum_end <= end_byte) {  in btrfs_del_csums()
607 			if (key.offset == bytenr)  in btrfs_del_csums()
609 		} else if (key.offset < bytenr && csum_end > end_byte) {  in btrfs_del_csums()
631 			offset = (bytenr - key.offset) >> blocksize_bits;  in btrfs_del_csums()
641 			key.offset = bytenr;  in btrfs_del_csums()
647 			ret = btrfs_split_item(trans, root, path, &key, offset);  in btrfs_del_csums()
653 			key.offset = end_byte - 1;  in btrfs_del_csums()
655 			truncate_one_csum(trans, root, path, &key, bytenr, len);  in btrfs_del_csums()
656 			if (key.offset < bytenr)  in btrfs_del_csums()