150 	struct btrfs_path *path;  in btrfs_insert_hole_extent()  local
153 	path = btrfs_alloc_path();  in btrfs_insert_hole_extent()
154 	if (!path)  in btrfs_insert_hole_extent()
160 	ret = btrfs_insert_empty_item(trans, root, path, &file_key,  in btrfs_insert_hole_extent()
165 	leaf = path->nodes[0];  in btrfs_insert_hole_extent()
166 	item = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_insert_hole_extent()
181 	btrfs_free_path(path);  in btrfs_insert_hole_extent()
188 		  struct btrfs_path *path,  in btrfs_lookup_csum()  argument
204 	ret = btrfs_search_slot(trans, root, &file_key, path, 0, cow);  in btrfs_lookup_csum()
207 	leaf = path->nodes[0];  in btrfs_lookup_csum()
210 		if (path->slots[0] == 0)  in btrfs_lookup_csum()
212 		path->slots[0]--;  in btrfs_lookup_csum()
213 		btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);  in btrfs_lookup_csum()
219 		csums_in_item = btrfs_item_size(leaf, path->slots[0]);  in btrfs_lookup_csum()
229 	item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_csum_item);  in btrfs_lookup_csum()
241 			     struct btrfs_path *path, u64 objectid,  in btrfs_lookup_file_extent()  argument
252 	return btrfs_search_slot(trans, root, &file_key, path, ins_len, cow);  in btrfs_lookup_file_extent()
265 			    struct btrfs_path *path, u64 disk_bytenr,  in search_csum_tree()  argument
282 	if (path->nodes[0]) {  in search_csum_tree()
283 		item = btrfs_item_ptr(path->nodes[0], path->slots[0],  in search_csum_tree()
285 		btrfs_item_key_to_cpu(path->nodes[0], &key, path->slots[0]);  in search_csum_tree()
286 		itemsize = btrfs_item_size(path->nodes[0], path->slots[0]);  in search_csum_tree()
296 	btrfs_release_path(path);  in search_csum_tree()
298 	item = btrfs_lookup_csum(NULL, csum_root, path, disk_bytenr, 0);  in search_csum_tree()
303 	btrfs_item_key_to_cpu(path->nodes[0], &key, path->slots[0]);  in search_csum_tree()
304 	itemsize = btrfs_item_size(path->nodes[0], path->slots[0]);  in search_csum_tree()
313 	read_extent_buffer(path->nodes[0], dst, (unsigned long)item,  in search_csum_tree()
380 	struct btrfs_path *path;  in btrfs_lookup_bio_sums()  local
408 	path = btrfs_alloc_path();  in btrfs_lookup_bio_sums()
409 	if (!path)  in btrfs_lookup_bio_sums()
418 				btrfs_free_path(path);  in btrfs_lookup_bio_sums()
434 		path->reada = READA_FORWARD;  in btrfs_lookup_bio_sums()
443 		path->search_commit_root = 1;  in btrfs_lookup_bio_sums()
444 		path->skip_locking = 1;  in btrfs_lookup_bio_sums()
467 		count = search_csum_tree(fs_info, path, cur_disk_bytenr,  in btrfs_lookup_bio_sums()
509 	btrfs_free_path(path);  in btrfs_lookup_bio_sums()
519 	struct btrfs_path *path;  in btrfs_lookup_csums_range()  local
533 	path = btrfs_alloc_path();  in btrfs_lookup_csums_range()
534 	if (!path)  in btrfs_lookup_csums_range()
537 	path->nowait = nowait;  in btrfs_lookup_csums_range()
539 		path->skip_locking = 1;  in btrfs_lookup_csums_range()
540 		path->reada = READA_FORWARD;  in btrfs_lookup_csums_range()
541 		path->search_commit_root = 1;  in btrfs_lookup_csums_range()
548 	ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);  in btrfs_lookup_csums_range()
551 	if (ret > 0 && path->slots[0] > 0) {  in btrfs_lookup_csums_range()
552 		leaf = path->nodes[0];  in btrfs_lookup_csums_range()
553 		btrfs_item_key_to_cpu(leaf, &key, path->slots[0] - 1);  in btrfs_lookup_csums_range()
558 			    btrfs_item_size(leaf, path->slots[0] - 1))  in btrfs_lookup_csums_range()
559 				path->slots[0]--;  in btrfs_lookup_csums_range()
564 		leaf = path->nodes[0];  in btrfs_lookup_csums_range()
565 		if (path->slots[0] >= btrfs_header_nritems(leaf)) {  in btrfs_lookup_csums_range()
566 			ret = btrfs_next_leaf(root, path);  in btrfs_lookup_csums_range()
571 			leaf = path->nodes[0];  in btrfs_lookup_csums_range()
574 		btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in btrfs_lookup_csums_range()
583 		size = btrfs_item_size(leaf, path->slots[0]);  in btrfs_lookup_csums_range()
586 			path->slots[0]++;  in btrfs_lookup_csums_range()
591 		item = btrfs_item_ptr(path->nodes[0], path->slots[0],  in btrfs_lookup_csums_range()
610 			read_extent_buffer(path->nodes[0],  in btrfs_lookup_csums_range()
618 		path->slots[0]++;  in btrfs_lookup_csums_range()
629 	btrfs_free_path(path);  in btrfs_lookup_csums_range()
760 				       struct btrfs_path *path,  in truncate_one_csum()  argument
770 	leaf = path->nodes[0];  in truncate_one_csum()
771 	csum_end = btrfs_item_size(leaf, path->slots[0]) / csum_size;  in truncate_one_csum()
784 		btrfs_truncate_item(path, new_size, 1);  in truncate_one_csum()
796 		btrfs_truncate_item(path, new_size, 0);  in truncate_one_csum()
799 		btrfs_set_item_key_safe(fs_info, path, key);  in truncate_one_csum()
813 	struct btrfs_path *path;  in btrfs_del_csums()  local
825 	path = btrfs_alloc_path();  in btrfs_del_csums()
826 	if (!path)  in btrfs_del_csums()
834 		ret = btrfs_search_slot(trans, root, &key, path, -1, 1);  in btrfs_del_csums()
837 			if (path->slots[0] == 0)  in btrfs_del_csums()
839 			path->slots[0]--;  in btrfs_del_csums()
844 		leaf = path->nodes[0];  in btrfs_del_csums()
845 		btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in btrfs_del_csums()
855 		csum_end = btrfs_item_size(leaf, path->slots[0]) / csum_size;  in btrfs_del_csums()
872 			if (key.offset > bytenr && path->slots[0] > 0) {  in btrfs_del_csums()
873 				int slot = path->slots[0] - 1;  in btrfs_del_csums()
884 					path->slots[0] = slot;  in btrfs_del_csums()
890 			ret = btrfs_del_items(trans, root, path,  in btrfs_del_csums()
891 					      path->slots[0], del_nr);  in btrfs_del_csums()
924 							    path->slots[0]);  in btrfs_del_csums()
934 			ret = btrfs_split_item(trans, root, path, &key, offset);  in btrfs_del_csums()
943 			truncate_one_csum(fs_info, path, &key, bytenr, len);  in btrfs_del_csums()
947 		btrfs_release_path(path);  in btrfs_del_csums()
949 	btrfs_free_path(path);  in btrfs_del_csums()
954 				 struct btrfs_path *path,  in find_next_csum_offset()  argument
957 	const u32 nritems = btrfs_header_nritems(path->nodes[0]);  in find_next_csum_offset()
959 	int slot = path->slots[0] + 1;  in find_next_csum_offset()
963 		ret = btrfs_next_leaf(root, path);  in find_next_csum_offset()
970 		slot = path->slots[0];  in find_next_csum_offset()
973 	btrfs_item_key_to_cpu(path->nodes[0], &found_key, slot);  in find_next_csum_offset()
991 	struct btrfs_path *path;  in btrfs_csum_file_blocks()  local
1005 	path = btrfs_alloc_path();  in btrfs_csum_file_blocks()
1006 	if (!path)  in btrfs_csum_file_blocks()
1016 	item = btrfs_lookup_csum(trans, root, path, bytenr, 1);  in btrfs_csum_file_blocks()
1019 		leaf = path->nodes[0];  in btrfs_csum_file_blocks()
1020 		item_end = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_csum_file_blocks()
1023 			   btrfs_item_size(leaf, path->slots[0]));  in btrfs_csum_file_blocks()
1033 		leaf = path->nodes[0];  in btrfs_csum_file_blocks()
1034 		item_size = btrfs_item_size(leaf, path->slots[0]);  in btrfs_csum_file_blocks()
1042 		ret = find_next_csum_offset(root, path, &next_offset);  in btrfs_csum_file_blocks()
1060 		btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);  in btrfs_csum_file_blocks()
1066 	btrfs_release_path(path);  in btrfs_csum_file_blocks()
1067 	path->search_for_extension = 1;  in btrfs_csum_file_blocks()
1068 	ret = btrfs_search_slot(trans, root, &file_key, path,  in btrfs_csum_file_blocks()
1070 	path->search_for_extension = 0;  in btrfs_csum_file_blocks()
1075 		if (path->slots[0] == 0)  in btrfs_csum_file_blocks()
1077 		path->slots[0]--;  in btrfs_csum_file_blocks()
1080 	leaf = path->nodes[0];  in btrfs_csum_file_blocks()
1081 	btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);  in btrfs_csum_file_blocks()
1091 	if (csum_offset == btrfs_item_size(leaf, path->slots[0]) /  in btrfs_csum_file_blocks()
1124 			if (path->slots[0] + 1 >=  in btrfs_csum_file_blocks()
1125 			    btrfs_header_nritems(path->nodes[0])) {  in btrfs_csum_file_blocks()
1126 				ret = find_next_csum_offset(root, path, &next_offset);  in btrfs_csum_file_blocks()
1133 			ret = find_next_csum_offset(root, path, &next_offset);  in btrfs_csum_file_blocks()
1146 		diff = diff - btrfs_item_size(leaf, path->slots[0]);  in btrfs_csum_file_blocks()
1151 		btrfs_extend_item(path, diff);  in btrfs_csum_file_blocks()
1157 	btrfs_release_path(path);  in btrfs_csum_file_blocks()
1173 	ret = btrfs_insert_empty_item(trans, root, path, &file_key,  in btrfs_csum_file_blocks()
1179 	leaf = path->nodes[0];  in btrfs_csum_file_blocks()
1181 	item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_csum_item);  in btrfs_csum_file_blocks()
1183 				      btrfs_item_size(leaf, path->slots[0]));  in btrfs_csum_file_blocks()
1198 	btrfs_mark_buffer_dirty(path->nodes[0]);  in btrfs_csum_file_blocks()
1200 		btrfs_release_path(path);  in btrfs_csum_file_blocks()
1205 	btrfs_free_path(path);  in btrfs_csum_file_blocks()
1210 				     const struct btrfs_path *path,  in btrfs_extent_item_to_extent_map()  argument
1217 	struct extent_buffer *leaf = path->nodes[0];  in btrfs_extent_item_to_extent_map()
1218 	const int slot = path->slots[0];  in btrfs_extent_item_to_extent_map()
1227 	extent_end = btrfs_file_extent_end(path);  in btrfs_extent_item_to_extent_map()
1281 u64 btrfs_file_extent_end(const struct btrfs_path *path)  in btrfs_file_extent_end()  argument
1283 	const struct extent_buffer *leaf = path->nodes[0];  in btrfs_file_extent_end()
1284 	const int slot = path->slots[0];  in btrfs_file_extent_end()