compute_usages(9)

💖 compute_usages 💖

okay so bestie, this page is from the Kernel API Manual, and it’s giving “tiny but important helper” energy. It computes the lbns in use and block map data blocks counts from the tail of the journal. periodt 💅

✨ NAME ✨

compute_usages — compute the lbns in use and block map data blocks counts from the tail of the journal. 🎀

🛠 SYNOPSIS 🛠

int compute_usages (struct repair_completion *repair );

🌸 ARGUMENTS 🌸

• repair — the repair completion. that’s the whole argument, no cap 🫶

👑 SEE ALSO 👑

Kernel file: ./drivers/md/dm-vdo/repair.c — and the whole SEE ALSO squad is:

• as_repair_completion(9)
• abort_repair(9)
• abort_on_error(9)
• drain_slab_depot(9)
• flush_block_map_updates(9)
• handle_page_load_error(9)
• unmap_entry(9)
• remove_out_of_bounds_entries(9)
• process_slot(9)
• rebuild_reference_counts_from_page(9)
• page_loaded(9)
• fetch_page(9)
• rebuild_from_leaves(9)
• process_entry(9)
• advance_points(9)
• before_recovery_point(9)
• get_entry(9)
• validate_recovery_journal_entry(9)
• add_slab_journal_entries(9)
• vdo_replay_into_slab_journals(9)
• find_entry_starting_next_page(9)
• get_recovery_journal_block_header(9)
• is_valid_recovery_journal_block(9)
• is_exact_recovery_journal_block(9)
• find_recovery_journal_head_and_tail(9)
• unpack_entry(9)
• append_sector_entries(9)
• extract_new_mappings(9)
• vdo_repair(9)

source/version tea ☕: this page lives under ./drivers/md/dm-vdo, dated October 2026, and it’s the compute_usages(9) page. bye bestie, go slay that kernel reading 💖✨