694 	struct extent_buffer *leaf;  in btrfs_drop_extents()  local
745 			leaf = path->nodes[0];  in btrfs_drop_extents()
746 			btrfs_item_key_to_cpu(leaf, &key, path->slots[0] - 1);  in btrfs_drop_extents()
754 		leaf = path->nodes[0];  in btrfs_drop_extents()
755 		if (path->slots[0] >= btrfs_header_nritems(leaf)) {  in btrfs_drop_extents()
765 			leaf = path->nodes[0];  in btrfs_drop_extents()
769 		btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in btrfs_drop_extents()
782 		fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_drop_extents()
784 		extent_type = btrfs_file_extent_type(leaf, fi);  in btrfs_drop_extents()
788 			disk_bytenr = btrfs_file_extent_disk_bytenr(leaf, fi);  in btrfs_drop_extents()
789 			num_bytes = btrfs_file_extent_disk_num_bytes(leaf, fi);  in btrfs_drop_extents()
790 			extent_offset = btrfs_file_extent_offset(leaf, fi);  in btrfs_drop_extents()
792 				btrfs_file_extent_num_bytes(leaf, fi);  in btrfs_drop_extents()
795 				btrfs_file_extent_ram_bytes(leaf, fi);  in btrfs_drop_extents()
850 			leaf = path->nodes[0];  in btrfs_drop_extents()
851 			fi = btrfs_item_ptr(leaf, path->slots[0] - 1,  in btrfs_drop_extents()
853 			btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_drop_extents()
856 			fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_drop_extents()
860 			btrfs_set_file_extent_offset(leaf, fi, extent_offset);  in btrfs_drop_extents()
861 			btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_drop_extents()
863 			btrfs_mark_buffer_dirty(leaf);  in btrfs_drop_extents()
899 			btrfs_set_file_extent_offset(leaf, fi, extent_offset);  in btrfs_drop_extents()
900 			btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_drop_extents()
902 			btrfs_mark_buffer_dirty(leaf);  in btrfs_drop_extents()
920 			btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_drop_extents()
922 			btrfs_mark_buffer_dirty(leaf);  in btrfs_drop_extents()
967 			if (path->slots[0] + 1 < btrfs_header_nritems(leaf)) {  in btrfs_drop_extents()
1002 	leaf = path->nodes[0];  in btrfs_drop_extents()
1010 	    btrfs_leaf_free_space(leaf) >=  in btrfs_drop_extents()
1016 		if (!del_nr && path->slots[0] < btrfs_header_nritems(leaf)) {  in btrfs_drop_extents()
1019 			btrfs_item_key_to_cpu(leaf, &slot_key, path->slots[0]);  in btrfs_drop_extents()
1038 static int extent_mergeable(struct extent_buffer *leaf, int slot,  in extent_mergeable()  argument
1046 	if (slot < 0 || slot >= btrfs_header_nritems(leaf))  in extent_mergeable()
1049 	btrfs_item_key_to_cpu(leaf, &key, slot);  in extent_mergeable()
1053 	fi = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item);  in extent_mergeable()
1054 	if (btrfs_file_extent_type(leaf, fi) != BTRFS_FILE_EXTENT_REG ||  in extent_mergeable()
1055 	    btrfs_file_extent_disk_bytenr(leaf, fi) != bytenr ||  in extent_mergeable()
1056 	    btrfs_file_extent_offset(leaf, fi) != key.offset - orig_offset ||  in extent_mergeable()
1057 	    btrfs_file_extent_compression(leaf, fi) ||  in extent_mergeable()
1058 	    btrfs_file_extent_encryption(leaf, fi) ||  in extent_mergeable()
1059 	    btrfs_file_extent_other_encoding(leaf, fi))  in extent_mergeable()
1062 	extent_end = key.offset + btrfs_file_extent_num_bytes(leaf, fi);  in extent_mergeable()
1083 	struct extent_buffer *leaf;  in btrfs_mark_extent_written()  local
1118 	leaf = path->nodes[0];  in btrfs_mark_extent_written()
1119 	btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in btrfs_mark_extent_written()
1126 	fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1128 	if (btrfs_file_extent_type(leaf, fi) != BTRFS_FILE_EXTENT_PREALLOC) {  in btrfs_mark_extent_written()
1133 	extent_end = key.offset + btrfs_file_extent_num_bytes(leaf, fi);  in btrfs_mark_extent_written()
1140 	bytenr = btrfs_file_extent_disk_bytenr(leaf, fi);  in btrfs_mark_extent_written()
1141 	num_bytes = btrfs_file_extent_disk_num_bytes(leaf, fi);  in btrfs_mark_extent_written()
1142 	orig_offset = key.offset - btrfs_file_extent_offset(leaf, fi);  in btrfs_mark_extent_written()
1148 		if (extent_mergeable(leaf, path->slots[0] - 1,  in btrfs_mark_extent_written()
1153 			fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1155 			btrfs_set_file_extent_generation(leaf, fi,  in btrfs_mark_extent_written()
1157 			btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1159 			btrfs_set_file_extent_offset(leaf, fi,  in btrfs_mark_extent_written()
1161 			fi = btrfs_item_ptr(leaf, path->slots[0] - 1,  in btrfs_mark_extent_written()
1163 			btrfs_set_file_extent_generation(leaf, fi,  in btrfs_mark_extent_written()
1165 			btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1167 			btrfs_mark_buffer_dirty(leaf);  in btrfs_mark_extent_written()
1175 		if (extent_mergeable(leaf, path->slots[0] + 1,  in btrfs_mark_extent_written()
1178 			fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1180 			btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1182 			btrfs_set_file_extent_generation(leaf, fi,  in btrfs_mark_extent_written()
1188 			fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1190 			btrfs_set_file_extent_generation(leaf, fi,  in btrfs_mark_extent_written()
1192 			btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1194 			btrfs_set_file_extent_offset(leaf, fi,  in btrfs_mark_extent_written()
1196 			btrfs_mark_buffer_dirty(leaf);  in btrfs_mark_extent_written()
1216 		leaf = path->nodes[0];  in btrfs_mark_extent_written()
1217 		fi = btrfs_item_ptr(leaf, path->slots[0] - 1,  in btrfs_mark_extent_written()
1219 		btrfs_set_file_extent_generation(leaf, fi, trans->transid);  in btrfs_mark_extent_written()
1220 		btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1223 		fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1226 		btrfs_set_file_extent_generation(leaf, fi, trans->transid);  in btrfs_mark_extent_written()
1227 		btrfs_set_file_extent_offset(leaf, fi, split - orig_offset);  in btrfs_mark_extent_written()
1228 		btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1230 		btrfs_mark_buffer_dirty(leaf);  in btrfs_mark_extent_written()
1261 	if (extent_mergeable(leaf, path->slots[0] + 1,  in btrfs_mark_extent_written()
1279 	if (extent_mergeable(leaf, path->slots[0] - 1,  in btrfs_mark_extent_written()
1296 		fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1298 		btrfs_set_file_extent_type(leaf, fi,  in btrfs_mark_extent_written()
1300 		btrfs_set_file_extent_generation(leaf, fi, trans->transid);  in btrfs_mark_extent_written()
1301 		btrfs_mark_buffer_dirty(leaf);  in btrfs_mark_extent_written()
1303 		fi = btrfs_item_ptr(leaf, del_slot - 1,  in btrfs_mark_extent_written()
1305 		btrfs_set_file_extent_type(leaf, fi,  in btrfs_mark_extent_written()
1307 		btrfs_set_file_extent_generation(leaf, fi, trans->transid);  in btrfs_mark_extent_written()
1308 		btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1310 		btrfs_mark_buffer_dirty(leaf);  in btrfs_mark_extent_written()
2333 static int hole_mergeable(struct btrfs_inode *inode, struct extent_buffer *leaf,  in hole_mergeable()  argument
2339 	if (slot < 0 || slot >= btrfs_header_nritems(leaf))  in hole_mergeable()
2342 	btrfs_item_key_to_cpu(leaf, &key, slot);  in hole_mergeable()
2347 	fi = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item);  in hole_mergeable()
2349 	if (btrfs_file_extent_type(leaf, fi) != BTRFS_FILE_EXTENT_REG)  in hole_mergeable()
2352 	if (btrfs_file_extent_disk_bytenr(leaf, fi))  in hole_mergeable()
2357 	if (key.offset + btrfs_file_extent_num_bytes(leaf, fi) == start)  in hole_mergeable()
2368 	struct extent_buffer *leaf;  in fill_holes()  local
2393 	leaf = path->nodes[0];  in fill_holes()
2394 	if (hole_mergeable(inode, leaf, path->slots[0] - 1, offset, end)) {  in fill_holes()
2398 		fi = btrfs_item_ptr(leaf, path->slots[0],  in fill_holes()
2400 		num_bytes = btrfs_file_extent_num_bytes(leaf, fi) +  in fill_holes()
2402 		btrfs_set_file_extent_num_bytes(leaf, fi, num_bytes);  in fill_holes()
2403 		btrfs_set_file_extent_ram_bytes(leaf, fi, num_bytes);  in fill_holes()
2404 		btrfs_set_file_extent_offset(leaf, fi, 0);  in fill_holes()
2405 		btrfs_mark_buffer_dirty(leaf);  in fill_holes()
2409 	if (hole_mergeable(inode, leaf, path->slots[0], offset, end)) {  in fill_holes()
2414 		fi = btrfs_item_ptr(leaf, path->slots[0],  in fill_holes()
2416 		num_bytes = btrfs_file_extent_num_bytes(leaf, fi) + end -  in fill_holes()
2418 		btrfs_set_file_extent_num_bytes(leaf, fi, num_bytes);  in fill_holes()
2419 		btrfs_set_file_extent_ram_bytes(leaf, fi, num_bytes);  in fill_holes()
2420 		btrfs_set_file_extent_offset(leaf, fi, 0);  in fill_holes()
2421 		btrfs_mark_buffer_dirty(leaf);  in fill_holes()
2557 	struct extent_buffer *leaf;  in btrfs_insert_replace_extent()  local
2579 	leaf = path->nodes[0];  in btrfs_insert_replace_extent()
2581 	write_extent_buffer(leaf, extent_info->extent_buf,  in btrfs_insert_replace_extent()
2582 			    btrfs_item_ptr_offset(leaf, slot),  in btrfs_insert_replace_extent()
2584 	extent = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item);  in btrfs_insert_replace_extent()
2585 	ASSERT(btrfs_file_extent_type(leaf, extent) != BTRFS_FILE_EXTENT_INLINE);  in btrfs_insert_replace_extent()
2586 	btrfs_set_file_extent_offset(leaf, extent, extent_info->data_offset);  in btrfs_insert_replace_extent()
2587 	btrfs_set_file_extent_num_bytes(leaf, extent, replace_len);  in btrfs_insert_replace_extent()
2589 		btrfs_set_file_extent_generation(leaf, extent, trans->transid);  in btrfs_insert_replace_extent()
2590 	btrfs_mark_buffer_dirty(leaf);  in btrfs_insert_replace_extent()