756 	struct extent_buffer *leaf;  in __btrfs_drop_extents()  local
793 			leaf = path->nodes[0];  in __btrfs_drop_extents()
794 			btrfs_item_key_to_cpu(leaf, &key, path->slots[0] - 1);  in __btrfs_drop_extents()
802 		leaf = path->nodes[0];  in __btrfs_drop_extents()
803 		if (path->slots[0] >= btrfs_header_nritems(leaf)) {  in __btrfs_drop_extents()
813 			leaf = path->nodes[0];  in __btrfs_drop_extents()
817 		btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in __btrfs_drop_extents()
830 		fi = btrfs_item_ptr(leaf, path->slots[0],  in __btrfs_drop_extents()
832 		extent_type = btrfs_file_extent_type(leaf, fi);  in __btrfs_drop_extents()
836 			disk_bytenr = btrfs_file_extent_disk_bytenr(leaf, fi);  in __btrfs_drop_extents()
837 			num_bytes = btrfs_file_extent_disk_num_bytes(leaf, fi);  in __btrfs_drop_extents()
838 			extent_offset = btrfs_file_extent_offset(leaf, fi);  in __btrfs_drop_extents()
840 				btrfs_file_extent_num_bytes(leaf, fi);  in __btrfs_drop_extents()
843 				btrfs_file_extent_ram_bytes(leaf, fi);  in __btrfs_drop_extents()
898 			leaf = path->nodes[0];  in __btrfs_drop_extents()
899 			fi = btrfs_item_ptr(leaf, path->slots[0] - 1,  in __btrfs_drop_extents()
901 			btrfs_set_file_extent_num_bytes(leaf, fi,  in __btrfs_drop_extents()
904 			fi = btrfs_item_ptr(leaf, path->slots[0],  in __btrfs_drop_extents()
908 			btrfs_set_file_extent_offset(leaf, fi, extent_offset);  in __btrfs_drop_extents()
909 			btrfs_set_file_extent_num_bytes(leaf, fi,  in __btrfs_drop_extents()
911 			btrfs_mark_buffer_dirty(leaf);  in __btrfs_drop_extents()
947 			btrfs_set_file_extent_offset(leaf, fi, extent_offset);  in __btrfs_drop_extents()
948 			btrfs_set_file_extent_num_bytes(leaf, fi,  in __btrfs_drop_extents()
950 			btrfs_mark_buffer_dirty(leaf);  in __btrfs_drop_extents()
968 			btrfs_set_file_extent_num_bytes(leaf, fi,  in __btrfs_drop_extents()
970 			btrfs_mark_buffer_dirty(leaf);  in __btrfs_drop_extents()
1017 			if (path->slots[0] + 1 < btrfs_header_nritems(leaf)) {  in __btrfs_drop_extents()
1052 	leaf = path->nodes[0];  in __btrfs_drop_extents()
1061 	    btrfs_leaf_free_space(leaf) >=  in __btrfs_drop_extents()
1067 		if (!del_nr && path->slots[0] < btrfs_header_nritems(leaf)) {  in __btrfs_drop_extents()
1070 			btrfs_item_key_to_cpu(leaf, &slot_key, path->slots[0]);  in __btrfs_drop_extents()
1105 static int extent_mergeable(struct extent_buffer *leaf, int slot,  in extent_mergeable()  argument
1113 	if (slot < 0 || slot >= btrfs_header_nritems(leaf))  in extent_mergeable()
1116 	btrfs_item_key_to_cpu(leaf, &key, slot);  in extent_mergeable()
1120 	fi = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item);  in extent_mergeable()
1121 	if (btrfs_file_extent_type(leaf, fi) != BTRFS_FILE_EXTENT_REG ||  in extent_mergeable()
1122 	    btrfs_file_extent_disk_bytenr(leaf, fi) != bytenr ||  in extent_mergeable()
1123 	    btrfs_file_extent_offset(leaf, fi) != key.offset - orig_offset ||  in extent_mergeable()
1124 	    btrfs_file_extent_compression(leaf, fi) ||  in extent_mergeable()
1125 	    btrfs_file_extent_encryption(leaf, fi) ||  in extent_mergeable()
1126 	    btrfs_file_extent_other_encoding(leaf, fi))  in extent_mergeable()
1129 	extent_end = key.offset + btrfs_file_extent_num_bytes(leaf, fi);  in extent_mergeable()
1150 	struct extent_buffer *leaf;  in btrfs_mark_extent_written()  local
1185 	leaf = path->nodes[0];  in btrfs_mark_extent_written()
1186 	btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in btrfs_mark_extent_written()
1193 	fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1195 	if (btrfs_file_extent_type(leaf, fi) != BTRFS_FILE_EXTENT_PREALLOC) {  in btrfs_mark_extent_written()
1200 	extent_end = key.offset + btrfs_file_extent_num_bytes(leaf, fi);  in btrfs_mark_extent_written()
1207 	bytenr = btrfs_file_extent_disk_bytenr(leaf, fi);  in btrfs_mark_extent_written()
1208 	num_bytes = btrfs_file_extent_disk_num_bytes(leaf, fi);  in btrfs_mark_extent_written()
1209 	orig_offset = key.offset - btrfs_file_extent_offset(leaf, fi);  in btrfs_mark_extent_written()
1215 		if (extent_mergeable(leaf, path->slots[0] - 1,  in btrfs_mark_extent_written()
1220 			fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1222 			btrfs_set_file_extent_generation(leaf, fi,  in btrfs_mark_extent_written()
1224 			btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1226 			btrfs_set_file_extent_offset(leaf, fi,  in btrfs_mark_extent_written()
1228 			fi = btrfs_item_ptr(leaf, path->slots[0] - 1,  in btrfs_mark_extent_written()
1230 			btrfs_set_file_extent_generation(leaf, fi,  in btrfs_mark_extent_written()
1232 			btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1234 			btrfs_mark_buffer_dirty(leaf);  in btrfs_mark_extent_written()
1242 		if (extent_mergeable(leaf, path->slots[0] + 1,  in btrfs_mark_extent_written()
1245 			fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1247 			btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1249 			btrfs_set_file_extent_generation(leaf, fi,  in btrfs_mark_extent_written()
1255 			fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1257 			btrfs_set_file_extent_generation(leaf, fi,  in btrfs_mark_extent_written()
1259 			btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1261 			btrfs_set_file_extent_offset(leaf, fi,  in btrfs_mark_extent_written()
1263 			btrfs_mark_buffer_dirty(leaf);  in btrfs_mark_extent_written()
1283 		leaf = path->nodes[0];  in btrfs_mark_extent_written()
1284 		fi = btrfs_item_ptr(leaf, path->slots[0] - 1,  in btrfs_mark_extent_written()
1286 		btrfs_set_file_extent_generation(leaf, fi, trans->transid);  in btrfs_mark_extent_written()
1287 		btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1290 		fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1293 		btrfs_set_file_extent_generation(leaf, fi, trans->transid);  in btrfs_mark_extent_written()
1294 		btrfs_set_file_extent_offset(leaf, fi, split - orig_offset);  in btrfs_mark_extent_written()
1295 		btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1297 		btrfs_mark_buffer_dirty(leaf);  in btrfs_mark_extent_written()
1328 	if (extent_mergeable(leaf, path->slots[0] + 1,  in btrfs_mark_extent_written()
1346 	if (extent_mergeable(leaf, path->slots[0] - 1,  in btrfs_mark_extent_written()
1363 		fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1365 		btrfs_set_file_extent_type(leaf, fi,  in btrfs_mark_extent_written()
1367 		btrfs_set_file_extent_generation(leaf, fi, trans->transid);  in btrfs_mark_extent_written()
1368 		btrfs_mark_buffer_dirty(leaf);  in btrfs_mark_extent_written()
1370 		fi = btrfs_item_ptr(leaf, del_slot - 1,  in btrfs_mark_extent_written()
1372 		btrfs_set_file_extent_type(leaf, fi,  in btrfs_mark_extent_written()
1374 		btrfs_set_file_extent_generation(leaf, fi, trans->transid);  in btrfs_mark_extent_written()
1375 		btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1377 		btrfs_mark_buffer_dirty(leaf);  in btrfs_mark_extent_written()
2248 static int hole_mergeable(struct btrfs_inode *inode, struct extent_buffer *leaf,  in hole_mergeable()  argument
2254 	if (slot < 0 || slot >= btrfs_header_nritems(leaf))  in hole_mergeable()
2257 	btrfs_item_key_to_cpu(leaf, &key, slot);  in hole_mergeable()
2262 	fi = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item);  in hole_mergeable()
2264 	if (btrfs_file_extent_type(leaf, fi) != BTRFS_FILE_EXTENT_REG)  in hole_mergeable()
2267 	if (btrfs_file_extent_disk_bytenr(leaf, fi))  in hole_mergeable()
2272 	if (key.offset + btrfs_file_extent_num_bytes(leaf, fi) == start)  in hole_mergeable()
2283 	struct extent_buffer *leaf;  in fill_holes()  local
2308 	leaf = path->nodes[0];  in fill_holes()
2309 	if (hole_mergeable(inode, leaf, path->slots[0] - 1, offset, end)) {  in fill_holes()
2313 		fi = btrfs_item_ptr(leaf, path->slots[0],  in fill_holes()
2315 		num_bytes = btrfs_file_extent_num_bytes(leaf, fi) +  in fill_holes()
2317 		btrfs_set_file_extent_num_bytes(leaf, fi, num_bytes);  in fill_holes()
2318 		btrfs_set_file_extent_ram_bytes(leaf, fi, num_bytes);  in fill_holes()
2319 		btrfs_set_file_extent_offset(leaf, fi, 0);  in fill_holes()
2320 		btrfs_mark_buffer_dirty(leaf);  in fill_holes()
2324 	if (hole_mergeable(inode, leaf, path->slots[0], offset, end)) {  in fill_holes()
2329 		fi = btrfs_item_ptr(leaf, path->slots[0],  in fill_holes()
2331 		num_bytes = btrfs_file_extent_num_bytes(leaf, fi) + end -  in fill_holes()
2333 		btrfs_set_file_extent_num_bytes(leaf, fi, num_bytes);  in fill_holes()
2334 		btrfs_set_file_extent_ram_bytes(leaf, fi, num_bytes);  in fill_holes()
2335 		btrfs_set_file_extent_offset(leaf, fi, 0);  in fill_holes()
2336 		btrfs_mark_buffer_dirty(leaf);  in fill_holes()
2460 	struct extent_buffer *leaf;  in btrfs_insert_clone_extent()  local
2481 	leaf = path->nodes[0];  in btrfs_insert_clone_extent()
2483 	write_extent_buffer(leaf, clone_info->extent_buf,  in btrfs_insert_clone_extent()
2484 			    btrfs_item_ptr_offset(leaf, slot),  in btrfs_insert_clone_extent()
2486 	extent = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item);  in btrfs_insert_clone_extent()
2487 	btrfs_set_file_extent_offset(leaf, extent, clone_info->data_offset);  in btrfs_insert_clone_extent()
2488 	btrfs_set_file_extent_num_bytes(leaf, extent, clone_len);  in btrfs_insert_clone_extent()
2489 	btrfs_mark_buffer_dirty(leaf);  in btrfs_insert_clone_extent()