135 	struct btrfs_path *path;  in btrfs_insert_file_extent()  local
138 	path = btrfs_alloc_path();  in btrfs_insert_file_extent()
139 	if (!path)  in btrfs_insert_file_extent()
145 	path->leave_spinning = 1;  in btrfs_insert_file_extent()
146 	ret = btrfs_insert_empty_item(trans, root, path, &file_key,  in btrfs_insert_file_extent()
151 	leaf = path->nodes[0];  in btrfs_insert_file_extent()
152 	item = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_insert_file_extent()
167 	btrfs_free_path(path);  in btrfs_insert_file_extent()
174 		  struct btrfs_path *path,  in btrfs_lookup_csum()  argument
190 	ret = btrfs_search_slot(trans, root, &file_key, path, 0, cow);  in btrfs_lookup_csum()
193 	leaf = path->nodes[0];  in btrfs_lookup_csum()
196 		if (path->slots[0] == 0)  in btrfs_lookup_csum()
198 		path->slots[0]--;  in btrfs_lookup_csum()
199 		btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);  in btrfs_lookup_csum()
205 		csums_in_item = btrfs_item_size_nr(leaf, path->slots[0]);  in btrfs_lookup_csum()
215 	item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_csum_item);  in btrfs_lookup_csum()
227 			     struct btrfs_path *path, u64 objectid,  in btrfs_lookup_file_extent()  argument
238 	ret = btrfs_search_slot(trans, root, &file_key, path, ins_len, cow);  in btrfs_lookup_file_extent()
263 	struct btrfs_path *path;  in btrfs_lookup_bio_sums()  local
275 	path = btrfs_alloc_path();  in btrfs_lookup_bio_sums()
276 	if (!path)  in btrfs_lookup_bio_sums()
287 				btrfs_free_path(path);  in btrfs_lookup_bio_sums()
299 		path->reada = READA_FORWARD;  in btrfs_lookup_bio_sums()
308 		path->search_commit_root = 1;  in btrfs_lookup_bio_sums()
309 		path->skip_locking = 1;  in btrfs_lookup_bio_sums()
332 				btrfs_release_path(path);  in btrfs_lookup_bio_sums()
334 						 path, disk_bytenr, 0);  in btrfs_lookup_bio_sums()
349 				btrfs_release_path(path);  in btrfs_lookup_bio_sums()
352 			btrfs_item_key_to_cpu(path->nodes[0], &found_key,  in btrfs_lookup_bio_sums()
353 					      path->slots[0]);  in btrfs_lookup_bio_sums()
356 			item_size = btrfs_item_size_nr(path->nodes[0],  in btrfs_lookup_bio_sums()
357 						       path->slots[0]);  in btrfs_lookup_bio_sums()
361 			item = btrfs_item_ptr(path->nodes[0], path->slots[0],  in btrfs_lookup_bio_sums()
373 		read_extent_buffer(path->nodes[0], csum,  in btrfs_lookup_bio_sums()
391 	btrfs_free_path(path);  in btrfs_lookup_bio_sums()
400 	struct btrfs_path *path;  in btrfs_lookup_csums_range()  local
414 	path = btrfs_alloc_path();  in btrfs_lookup_csums_range()
415 	if (!path)  in btrfs_lookup_csums_range()
419 		path->skip_locking = 1;  in btrfs_lookup_csums_range()
420 		path->reada = READA_FORWARD;  in btrfs_lookup_csums_range()
421 		path->search_commit_root = 1;  in btrfs_lookup_csums_range()
428 	ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);  in btrfs_lookup_csums_range()
431 	if (ret > 0 && path->slots[0] > 0) {  in btrfs_lookup_csums_range()
432 		leaf = path->nodes[0];  in btrfs_lookup_csums_range()
433 		btrfs_item_key_to_cpu(leaf, &key, path->slots[0] - 1);  in btrfs_lookup_csums_range()
439 			    btrfs_item_size_nr(leaf, path->slots[0] - 1))  in btrfs_lookup_csums_range()
440 				path->slots[0]--;  in btrfs_lookup_csums_range()
445 		leaf = path->nodes[0];  in btrfs_lookup_csums_range()
446 		if (path->slots[0] >= btrfs_header_nritems(leaf)) {  in btrfs_lookup_csums_range()
447 			ret = btrfs_next_leaf(root, path);  in btrfs_lookup_csums_range()
452 			leaf = path->nodes[0];  in btrfs_lookup_csums_range()
455 		btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in btrfs_lookup_csums_range()
464 		size = btrfs_item_size_nr(leaf, path->slots[0]);  in btrfs_lookup_csums_range()
467 			path->slots[0]++;  in btrfs_lookup_csums_range()
472 		item = btrfs_item_ptr(path->nodes[0], path->slots[0],  in btrfs_lookup_csums_range()
492 			read_extent_buffer(path->nodes[0],  in btrfs_lookup_csums_range()
500 		path->slots[0]++;  in btrfs_lookup_csums_range()
511 	btrfs_free_path(path);  in btrfs_lookup_csums_range()
625  * key to describe the csum pointed to by the path, and it expects
635 				       struct btrfs_path *path,  in truncate_one_csum()  argument
645 	leaf = path->nodes[0];  in truncate_one_csum()
646 	csum_end = btrfs_item_size_nr(leaf, path->slots[0]) / csum_size;  in truncate_one_csum()
659 		btrfs_truncate_item(path, new_size, 1);  in truncate_one_csum()
671 		btrfs_truncate_item(path, new_size, 0);  in truncate_one_csum()
674 		btrfs_set_item_key_safe(fs_info, path, key);  in truncate_one_csum()
688 	struct btrfs_path *path;  in btrfs_del_csums()  local
700 	path = btrfs_alloc_path();  in btrfs_del_csums()
701 	if (!path)  in btrfs_del_csums()
709 		path->leave_spinning = 1;  in btrfs_del_csums()
710 		ret = btrfs_search_slot(trans, root, &key, path, -1, 1);  in btrfs_del_csums()
712 			if (path->slots[0] == 0)  in btrfs_del_csums()
714 			path->slots[0]--;  in btrfs_del_csums()
719 		leaf = path->nodes[0];  in btrfs_del_csums()
720 		btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in btrfs_del_csums()
730 		csum_end = btrfs_item_size_nr(leaf, path->slots[0]) / csum_size;  in btrfs_del_csums()
747 			if (key.offset > bytenr && path->slots[0] > 0) {  in btrfs_del_csums()
748 				int slot = path->slots[0] - 1;  in btrfs_del_csums()
759 					path->slots[0] = slot;  in btrfs_del_csums()
765 			ret = btrfs_del_items(trans, root, path,  in btrfs_del_csums()
766 					      path->slots[0], del_nr);  in btrfs_del_csums()
782 			 * But we can't drop the path because the  in btrfs_del_csums()
799 							    path->slots[0]);  in btrfs_del_csums()
809 			ret = btrfs_split_item(trans, root, path, &key, offset);  in btrfs_del_csums()
817 			truncate_one_csum(fs_info, path, &key, bytenr, len);  in btrfs_del_csums()
821 		btrfs_release_path(path);  in btrfs_del_csums()
825 	btrfs_free_path(path);  in btrfs_del_csums()
836 	struct btrfs_path *path;  in btrfs_csum_file_blocks()  local
851 	path = btrfs_alloc_path();  in btrfs_csum_file_blocks()
852 	if (!path)  in btrfs_csum_file_blocks()
862 	item = btrfs_lookup_csum(trans, root, path, bytenr, 1);  in btrfs_csum_file_blocks()
865 		leaf = path->nodes[0];  in btrfs_csum_file_blocks()
866 		item_end = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_csum_file_blocks()
869 			   btrfs_item_size_nr(leaf, path->slots[0]));  in btrfs_csum_file_blocks()
879 		leaf = path->nodes[0];  in btrfs_csum_file_blocks()
880 		item_size = btrfs_item_size_nr(leaf, path->slots[0]);  in btrfs_csum_file_blocks()
887 		int slot = path->slots[0] + 1;  in btrfs_csum_file_blocks()
889 		nritems = btrfs_header_nritems(path->nodes[0]);  in btrfs_csum_file_blocks()
890 		if (!nritems || (path->slots[0] >= nritems - 1)) {  in btrfs_csum_file_blocks()
891 			ret = btrfs_next_leaf(root, path);  in btrfs_csum_file_blocks()
898 			slot = path->slots[0];  in btrfs_csum_file_blocks()
900 		btrfs_item_key_to_cpu(path->nodes[0], &found_key, slot);  in btrfs_csum_file_blocks()
919 	 * release the path and do a search for insertion before the extension.  in btrfs_csum_file_blocks()
922 		btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);  in btrfs_csum_file_blocks()
928 	btrfs_release_path(path);  in btrfs_csum_file_blocks()
929 	ret = btrfs_search_slot(trans, root, &file_key, path,  in btrfs_csum_file_blocks()
935 		if (path->slots[0] == 0)  in btrfs_csum_file_blocks()
937 		path->slots[0]--;  in btrfs_csum_file_blocks()
940 	leaf = path->nodes[0];  in btrfs_csum_file_blocks()
941 	btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);  in btrfs_csum_file_blocks()
952 	if (csum_offset == btrfs_item_size_nr(leaf, path->slots[0]) /  in btrfs_csum_file_blocks()
967 		diff = diff - btrfs_item_size_nr(leaf, path->slots[0]);  in btrfs_csum_file_blocks()
972 		btrfs_extend_item(path, diff);  in btrfs_csum_file_blocks()
978 	btrfs_release_path(path);  in btrfs_csum_file_blocks()
994 	path->leave_spinning = 1;  in btrfs_csum_file_blocks()
995 	ret = btrfs_insert_empty_item(trans, root, path, &file_key,  in btrfs_csum_file_blocks()
997 	path->leave_spinning = 0;  in btrfs_csum_file_blocks()
1002 	leaf = path->nodes[0];  in btrfs_csum_file_blocks()
1004 	item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_csum_item);  in btrfs_csum_file_blocks()
1006 				      btrfs_item_size_nr(leaf, path->slots[0]));  in btrfs_csum_file_blocks()
1022 	btrfs_mark_buffer_dirty(path->nodes[0]);  in btrfs_csum_file_blocks()
1024 		btrfs_release_path(path);  in btrfs_csum_file_blocks()
1029 	btrfs_free_path(path);  in btrfs_csum_file_blocks()
1034 				     const struct btrfs_path *path,  in btrfs_extent_item_to_extent_map()  argument
1041 	struct extent_buffer *leaf = path->nodes[0];  in btrfs_extent_item_to_extent_map()
1042 	const int slot = path->slots[0];  in btrfs_extent_item_to_extent_map()
1051 	extent_end = btrfs_file_extent_end(path);  in btrfs_extent_item_to_extent_map()
1100  * Returns the end offset (non inclusive) of the file extent item the given path
1104 u64 btrfs_file_extent_end(const struct btrfs_path *path)  in btrfs_file_extent_end()  argument
1106 	const struct extent_buffer *leaf = path->nodes[0];  in btrfs_file_extent_end()
1107 	const int slot = path->slots[0];  in btrfs_file_extent_end()