vdo_dump_rec...l_statistics(9)

💖 NAME 💖

okay so bestie, this is the vdo_dump_rec...l_statistics(9) page in the Kernel API Manual, and the function it's hyping up is vdo_dump_recovery_journal_statistics — it dumps some current statistics and other debug info from the recovery journal. that's the whole assignment, and it ate 💅

✨ SYNOPSIS ✨

the signature is literally this, no edits, no vibes-based changes:

void vdo_dump_recovery_journal_statistics (const struct recovery_journal
       *journal );

🎀 ARGUMENTS 🎀

• journal — the recovery journal to dump. that's the one and only arg, bestie 🫶

🦋 SEE ALSO 🦋

if you wanna keep reading (and you should, bestie), the page points you at this kernel file reference first:

• Kernel file ./drivers/md/dm-vdo/recovery-journal.c Lock Counters.(9)

then here's the whole iconic friend group, in order, no one left out:

• get_zone_count_ptr(9), get_counter(9), is_journal_zone_locked(9), vdo_release_recovery_journal_block_reference(9), pop_free_list(9), is_block_dirty(9), is_block_empty(9), is_block_full(9)
• assert_on_journal_thread(9), continue_waiter(9), has_block_waiters(9), suspend_lock_counter(9), check_for_drain_complete(9), notify_recovery_journal_of_read_only_mode(9), enter_journal_read_only_mode(9), vdo_get_recovery_journal_current_sequence_number(9)
• get_recovery_journal_head(9), compute_recovery_count_byte(9), check_slab_journal_commit_threshold(9), finish_reaping(9), complete_reaping(9), handle_flush_error(9), initialize_journal_state(9), vdo_get_recovery_journal_length(9), reap_recovery_journal_callback(9)
• initialize_lock_counter(9), set_journal_tail(9), initialize_recovery_block(9), vdo_decode_recovery_journal(9), vdo_free_recovery_journal(9), vdo_initialize_recovery_journal_post_repair(9), vdo_get_journal_block_map_data_blocks_used(9), vdo_get_recovery_journal_thread_id(9), vdo_open_recovery_journal(9)
• vdo_record_recovery_journal(9), get_block_header(9), set_active_sector(9), advance_tail(9), initialize_lock_count(9), prepare_to_assign_entry(9), schedule_block_write(9), release_journal_block_reference(9), assign_entry(9)
• recycle_journal_block(9), continue_committed_waiter(9), notify_commit_waiters(9), recycle_journal_blocks(9), complete_write(9), add_queued_recovery_entries(9), write_block(9), write_blocks(9), vdo_add_recovery_journal_entry(9)
• is_lock_locked(9), reap_recovery_journal(9), vdo_acquire_recovery_journal_block_reference(9), vdo_release_journal_entry_lock(9), vdo_drain_recovery_journal(9), resume_lock_counter(9), vdo_resume_recovery_journal(9), vdo_get_recovery_journal_logical_blocks_used(9), vdo_get_recovery_journal_statistics(9), dump_recovery_block(9)

and that's the tea ☕ — this page's source/version is ./drivers/md/dm-vdo, and it's dated October 2026, under the vdo_dump_rec...l_statistics(9) title. mwah, bye bestie 🫶💖