dump_hash_zone(9)

💖 dump_hash_zone(9) — Kernel API Manual 💖

okay so bestie, welcome to the Kernel API Manual page for dump_hash_zone(9) — it's giving debugging-tool main character energy. Short page, but every crumb matters, so let's go. ✨

🌸 NAME 🌸

dump_hash_zone — dump information about a hash zone to the log for debugging. That's the whole vibe: it takes a hash zone and writes its info out to the log so you can debug. 🎀

✨ SYNOPSIS ✨

void dump_hash_zone (const struct hash_zone *zone );

🦋 ARGUMENTS 🦋

• zone — the zone to dump. literally the one you're handing over to get dumped. 💅

🔥 SEE ALSO 🔥

okay the SEE ALSO section is huge and lowkey iconic; it's linking you to the whole friend group. no cap, here's every single one in order:

• 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)
• vdo_dump_hash_zones(9)
• acquire_context(9)

xoxo, your kernel bestie 💖 — source/version: ./drivers/md/dm-vdo, date: October 2026, page: dump_hash_zone(9). periodt. 🫶