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0c54d44fef
page_zip_dir_elems(): New function, refactored from page_zip_dir_size(). page_zip_dir_size(): Use page_zip_dir_elems() page_zip_dir_start_offs(): New function: Gets an offset to the compressed page trailer (the dense page directory), including deleted records (the free list) page_zip_dir_start_low(page_zip, n_dense): Constness-preserving wrapper macro for page_zip_dir_start_offs(). page_zip_dir_start(page_zip): Constness-preserving wrapper macro for page_zip_dir_start_offs(). page_zip_decompress_node_ptrs(), page_zip_decompress_clust(): Replace a formula with a fully equivalent page_zip_dir_start_low() call. page_zip_write_rec(), page_zip_parse_write_node_ptr(), page_zip_write_node_ptr(), page_zip_write_trx_id_and_roll_ptr(), page_zip_clear_rec(): Replace a formula with an almost equivalent page_zip_dir_start() call. It is OK to replace page_dir_get_n_heap(page) with page_dir_get_n_heap(page_zip->data), because ut_ad(page_zip_header_cmp(page_zip, page)) or page_zip_validate(page_zip, page) asserts that the page headers are identical. rb:687 approved by Jimmy Yang