684 	struct extent_buffer *leaf;  in __btrfs_drop_extents()  local
722 			leaf = path->nodes[0];  in __btrfs_drop_extents()
723 			btrfs_item_key_to_cpu(leaf, &key, path->slots[0] - 1);  in __btrfs_drop_extents()
731 		leaf = path->nodes[0];  in __btrfs_drop_extents()
732 		if (path->slots[0] >= btrfs_header_nritems(leaf)) {  in __btrfs_drop_extents()
742 			leaf = path->nodes[0];  in __btrfs_drop_extents()
746 		btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in __btrfs_drop_extents()
759 		fi = btrfs_item_ptr(leaf, path->slots[0],  in __btrfs_drop_extents()
761 		extent_type = btrfs_file_extent_type(leaf, fi);  in __btrfs_drop_extents()
765 			disk_bytenr = btrfs_file_extent_disk_bytenr(leaf, fi);  in __btrfs_drop_extents()
766 			num_bytes = btrfs_file_extent_disk_num_bytes(leaf, fi);  in __btrfs_drop_extents()
767 			extent_offset = btrfs_file_extent_offset(leaf, fi);  in __btrfs_drop_extents()
769 				btrfs_file_extent_num_bytes(leaf, fi);  in __btrfs_drop_extents()
772 				btrfs_file_extent_ram_bytes(leaf, fi);  in __btrfs_drop_extents()
827 			leaf = path->nodes[0];  in __btrfs_drop_extents()
828 			fi = btrfs_item_ptr(leaf, path->slots[0] - 1,  in __btrfs_drop_extents()
830 			btrfs_set_file_extent_num_bytes(leaf, fi,  in __btrfs_drop_extents()
833 			fi = btrfs_item_ptr(leaf, path->slots[0],  in __btrfs_drop_extents()
837 			btrfs_set_file_extent_offset(leaf, fi, extent_offset);  in __btrfs_drop_extents()
838 			btrfs_set_file_extent_num_bytes(leaf, fi,  in __btrfs_drop_extents()
840 			btrfs_mark_buffer_dirty(leaf);  in __btrfs_drop_extents()
876 			btrfs_set_file_extent_offset(leaf, fi, extent_offset);  in __btrfs_drop_extents()
877 			btrfs_set_file_extent_num_bytes(leaf, fi,  in __btrfs_drop_extents()
879 			btrfs_mark_buffer_dirty(leaf);  in __btrfs_drop_extents()
897 			btrfs_set_file_extent_num_bytes(leaf, fi,  in __btrfs_drop_extents()
899 			btrfs_mark_buffer_dirty(leaf);  in __btrfs_drop_extents()
946 			if (path->slots[0] + 1 < btrfs_header_nritems(leaf)) {  in __btrfs_drop_extents()
981 	leaf = path->nodes[0];  in __btrfs_drop_extents()
990 	    btrfs_leaf_free_space(leaf) >=  in __btrfs_drop_extents()
996 		if (!del_nr && path->slots[0] < btrfs_header_nritems(leaf)) {  in __btrfs_drop_extents()
999 			btrfs_item_key_to_cpu(leaf, &slot_key, path->slots[0]);  in __btrfs_drop_extents()
1030 static int extent_mergeable(struct extent_buffer *leaf, int slot,  in extent_mergeable()  argument
1038 	if (slot < 0 || slot >= btrfs_header_nritems(leaf))  in extent_mergeable()
1041 	btrfs_item_key_to_cpu(leaf, &key, slot);  in extent_mergeable()
1045 	fi = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item);  in extent_mergeable()
1046 	if (btrfs_file_extent_type(leaf, fi) != BTRFS_FILE_EXTENT_REG ||  in extent_mergeable()
1047 	    btrfs_file_extent_disk_bytenr(leaf, fi) != bytenr ||  in extent_mergeable()
1048 	    btrfs_file_extent_offset(leaf, fi) != key.offset - orig_offset ||  in extent_mergeable()
1049 	    btrfs_file_extent_compression(leaf, fi) ||  in extent_mergeable()
1050 	    btrfs_file_extent_encryption(leaf, fi) ||  in extent_mergeable()
1051 	    btrfs_file_extent_other_encoding(leaf, fi))  in extent_mergeable()
1054 	extent_end = key.offset + btrfs_file_extent_num_bytes(leaf, fi);  in extent_mergeable()
1075 	struct extent_buffer *leaf;  in btrfs_mark_extent_written()  local
1110 	leaf = path->nodes[0];  in btrfs_mark_extent_written()
1111 	btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in btrfs_mark_extent_written()
1118 	fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1120 	if (btrfs_file_extent_type(leaf, fi) != BTRFS_FILE_EXTENT_PREALLOC) {  in btrfs_mark_extent_written()
1125 	extent_end = key.offset + btrfs_file_extent_num_bytes(leaf, fi);  in btrfs_mark_extent_written()
1132 	bytenr = btrfs_file_extent_disk_bytenr(leaf, fi);  in btrfs_mark_extent_written()
1133 	num_bytes = btrfs_file_extent_disk_num_bytes(leaf, fi);  in btrfs_mark_extent_written()
1134 	orig_offset = key.offset - btrfs_file_extent_offset(leaf, fi);  in btrfs_mark_extent_written()
1140 		if (extent_mergeable(leaf, path->slots[0] - 1,  in btrfs_mark_extent_written()
1145 			fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1147 			btrfs_set_file_extent_generation(leaf, fi,  in btrfs_mark_extent_written()
1149 			btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1151 			btrfs_set_file_extent_offset(leaf, fi,  in btrfs_mark_extent_written()
1153 			fi = btrfs_item_ptr(leaf, path->slots[0] - 1,  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_mark_buffer_dirty(leaf);  in btrfs_mark_extent_written()
1167 		if (extent_mergeable(leaf, path->slots[0] + 1,  in btrfs_mark_extent_written()
1170 			fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1172 			btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1174 			btrfs_set_file_extent_generation(leaf, fi,  in btrfs_mark_extent_written()
1180 			fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1182 			btrfs_set_file_extent_generation(leaf, fi,  in btrfs_mark_extent_written()
1184 			btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1186 			btrfs_set_file_extent_offset(leaf, fi,  in btrfs_mark_extent_written()
1188 			btrfs_mark_buffer_dirty(leaf);  in btrfs_mark_extent_written()
1208 		leaf = path->nodes[0];  in btrfs_mark_extent_written()
1209 		fi = btrfs_item_ptr(leaf, path->slots[0] - 1,  in btrfs_mark_extent_written()
1211 		btrfs_set_file_extent_generation(leaf, fi, trans->transid);  in btrfs_mark_extent_written()
1212 		btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1215 		fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1218 		btrfs_set_file_extent_generation(leaf, fi, trans->transid);  in btrfs_mark_extent_written()
1219 		btrfs_set_file_extent_offset(leaf, fi, split - orig_offset);  in btrfs_mark_extent_written()
1220 		btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1222 		btrfs_mark_buffer_dirty(leaf);  in btrfs_mark_extent_written()
1253 	if (extent_mergeable(leaf, path->slots[0] + 1,  in btrfs_mark_extent_written()
1271 	if (extent_mergeable(leaf, path->slots[0] - 1,  in btrfs_mark_extent_written()
1288 		fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1290 		btrfs_set_file_extent_type(leaf, fi,  in btrfs_mark_extent_written()
1292 		btrfs_set_file_extent_generation(leaf, fi, trans->transid);  in btrfs_mark_extent_written()
1293 		btrfs_mark_buffer_dirty(leaf);  in btrfs_mark_extent_written()
1295 		fi = btrfs_item_ptr(leaf, del_slot - 1,  in btrfs_mark_extent_written()
1297 		btrfs_set_file_extent_type(leaf, fi,  in btrfs_mark_extent_written()
1299 		btrfs_set_file_extent_generation(leaf, fi, trans->transid);  in btrfs_mark_extent_written()
1300 		btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1302 		btrfs_mark_buffer_dirty(leaf);  in btrfs_mark_extent_written()
2308 static int hole_mergeable(struct btrfs_inode *inode, struct extent_buffer *leaf,  in hole_mergeable()  argument
2314 	if (slot < 0 || slot >= btrfs_header_nritems(leaf))  in hole_mergeable()
2317 	btrfs_item_key_to_cpu(leaf, &key, slot);  in hole_mergeable()
2322 	fi = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item);  in hole_mergeable()
2324 	if (btrfs_file_extent_type(leaf, fi) != BTRFS_FILE_EXTENT_REG)  in hole_mergeable()
2327 	if (btrfs_file_extent_disk_bytenr(leaf, fi))  in hole_mergeable()
2332 	if (key.offset + btrfs_file_extent_num_bytes(leaf, fi) == start)  in hole_mergeable()
2343 	struct extent_buffer *leaf;  in fill_holes()  local
2368 	leaf = path->nodes[0];  in fill_holes()
2369 	if (hole_mergeable(inode, leaf, path->slots[0] - 1, offset, end)) {  in fill_holes()
2373 		fi = btrfs_item_ptr(leaf, path->slots[0],  in fill_holes()
2375 		num_bytes = btrfs_file_extent_num_bytes(leaf, fi) +  in fill_holes()
2377 		btrfs_set_file_extent_num_bytes(leaf, fi, num_bytes);  in fill_holes()
2378 		btrfs_set_file_extent_ram_bytes(leaf, fi, num_bytes);  in fill_holes()
2379 		btrfs_set_file_extent_offset(leaf, fi, 0);  in fill_holes()
2380 		btrfs_mark_buffer_dirty(leaf);  in fill_holes()
2384 	if (hole_mergeable(inode, leaf, path->slots[0], offset, end)) {  in fill_holes()
2389 		fi = btrfs_item_ptr(leaf, path->slots[0],  in fill_holes()
2391 		num_bytes = btrfs_file_extent_num_bytes(leaf, fi) + end -  in fill_holes()
2393 		btrfs_set_file_extent_num_bytes(leaf, fi, num_bytes);  in fill_holes()
2394 		btrfs_set_file_extent_ram_bytes(leaf, fi, num_bytes);  in fill_holes()
2395 		btrfs_set_file_extent_offset(leaf, fi, 0);  in fill_holes()
2396 		btrfs_mark_buffer_dirty(leaf);  in fill_holes()
2520 	struct extent_buffer *leaf;  in btrfs_insert_replace_extent()  local
2540 	leaf = path->nodes[0];  in btrfs_insert_replace_extent()
2542 	write_extent_buffer(leaf, extent_info->extent_buf,  in btrfs_insert_replace_extent()
2543 			    btrfs_item_ptr_offset(leaf, slot),  in btrfs_insert_replace_extent()
2545 	extent = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item);  in btrfs_insert_replace_extent()
2546 	ASSERT(btrfs_file_extent_type(leaf, extent) != BTRFS_FILE_EXTENT_INLINE);  in btrfs_insert_replace_extent()
2547 	btrfs_set_file_extent_offset(leaf, extent, extent_info->data_offset);  in btrfs_insert_replace_extent()
2548 	btrfs_set_file_extent_num_bytes(leaf, extent, replace_len);  in btrfs_insert_replace_extent()
2550 		btrfs_set_file_extent_generation(leaf, extent, trans->transid);  in btrfs_insert_replace_extent()
2551 	btrfs_mark_buffer_dirty(leaf);  in btrfs_insert_replace_extent()