rebuild_from_leaves(9)

💅 rebuild_from_leaves — the Kernel API Manual edition 🎀

okay bestie, so this one lives in the rebuild_from_leaves(9) section of the Kernel API Manual, and she's a whole vibe. let's get into it ✨

🌸 NAME 🌸

rebuild_from_leaves — literally rebuilds the reference counts from the leaf block map pages 🍓 no cap, that's the whole thing.

🦋 SYNOPSIS 🦋

void rebuild_from_leaves (struct vdo_completion *completion );

🎀 ARGUMENTS 🎀

• completion — the repair completion. that's it, that's the argument 🫶

✨ DESCRIPTION ✨

so here's the tea, bestie ☕: rebuild_from_leaves rebuilds the reference counts from the leaf block map pages — but only now, because the reference counts have already been rebuilt from the interior tree pages (which have been loaded, in the process, like they did their part 👑). it's giving second-act main character energy fr fr.

this callback is registered in rebuild_reference_counts. periodt. 💅

ngl this is a callback so please don't just call it out of nowhere and expect the world to make sense — it's registered in rebuild_reference_counts, iykyk.

💀 SEE ALSO 💀

lowkey a whole friend group, here's everyone in the group chat 🔥 and yes we're mentioning all of them, no skipping:

• 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)
• 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)
• compute_usages(9)
• vdo_repair(9)

and the kernel file herself, the source, the icon: ./drivers/md/dm-vdo/repair.c 🧚💜

okay that's the whole page bestie, you ate that 💖 this lil baddie is brought to you by the source at ./drivers/md/dm-vdo, dated October 2026, and yes she's still rebuild_from_leaves(9) in case you forgot 😭🫶 go forth and rebuild those reference counts, icon ⭐