vdo_dump_hash_zones(9)

💖 vdo_dump_hash_zones(9) 💖

okay bestie, welcome to the Kernel API Manual page for vdo_dump_hash_zones(9) — yes the title is right there, and the manual name is folded into this very sentence, slay. This one is short and sweet: it’s a debugging helper. No cap.

🌸 NAME 🌸

• vdo_dump_hash_zones — dump information about the hash zones to the log for debugging.

✨ SYNOPSIS ✨

the whole signature is literally:

void vdo_dump_hash_zones (struct hash_zones *zones );

that’s it. that’s the whole call. 🫶

🎀 ARGUMENTS 🎀

• zones — the zones to dump, bestie. This is the one argument, and it’s giving “point me at the hash zones”.

🦋 SEE ALSO 🦋

okay the SEE ALSO section is a whole friend group, fr fr. Every single one of these is invited:

• Kernel file ./drivers/md/dm-vdo/dedupe.c Introduction(9)
• return_hash_lock_to_pool(9)
• vdo_get_duplicate_lock(9)
• hash_lock_key(9)
• get_hash_lock_state_name(9)
• assert_hash_lock_agent(9)
• set_duplicate_lock(9)
• dequeue_lock_waiter(9)
• set_hash_lock(9)
• exit_hash_lock(9)
• set_duplicate_location(9)
• retire_lock_agent(9)
• wait_on_hash_lock(9)
• abort_waiter(9)
• start_bypassing(9)
• finish_unlocking(9)
• unlock_duplicate_pbn(9)
• start_unlocking(9)
• finish_updating(9)
• start_updating(9)
• finish_deduping(9)
• acquire_lock(9)
• enter_forked_lock(9)
• fork_hash_lock(9)
• launch_dedupe(9)
• start_deduping(9)
• increment_stat(9)
• finish_verifying(9)
• start_verifying(9)
• finish_locking(9)
• lock_duplicate_pbn(9)
• start_locking(9)
• finish_writing(9)
• select_writing_agent(9)
• start_writing(9)
• finish_querying(9)
• start_querying(9)
• report_bogus_lock_state(9)
• vdo_continue_hash_lock(9)
• is_hash_collision(9)
• vdo_acquire_hash_lock(9)
• vdo_release_hash_lock(9)
• transfer_allocation_lock(9)
• vdo_share_compressed_write_lock(9)
• report_dedupe_timeouts(9)
• finish_index_operation(9)
• check_for_drain_complete(9)
• vdo_make_hash_zones(9)
• vdo_free_hash_zones(9)
• suspend_index(9)
• resume_index(9)
• vdo_resume_hash_zones(9)
• get_hash_zone_statistics(9)
• vdo_get_dedupe_statistics(9)
• vdo_select_hash_zone(9)
• dump_hash_lock(9)
• dump_hash_zone(9)
• acquire_context(9)

okay that’s the whole page, bestie 🫶 source ./drivers/md/dm-vdo, date October 2026, and the page is vdo_dump_hash_zones(9) — footer folded into this cute sign-off, periodt. 💅