RECOVERY_JOURNAL_1_ENTRIES_PER_BLOCK
return DIV_ROUND_UP(age * RECOVERY_JOURNAL_1_ENTRIES_PER_BLOCK,
(RECOVERY_JOURNAL_1_ENTRIES_PER_BLOCK % RECOVERY_JOURNAL_1_ENTRIES_PER_SECTOR),
(header->entry_count <= RECOVERY_JOURNAL_1_ENTRIES_PER_BLOCK));
entries_per_block = RECOVERY_JOURNAL_1_ENTRIES_PER_BLOCK;