return_hash_lock_to_pool(9)

okay so bestie, buckle up 💖 this lil page lives in the Kernel API Manual, section 9, and it's literally all about return_hash_lock_to_pool. no cap, it's the "you're done with the lock, put it back where you found it" moment, and honestly? housekeeping has never been more main character. 🧚

🌸 NAME 🌸

return_hash_lock_to_pool — (Re)initialize a hash lock and return it to its pool. 💅

that's it. that's the whole vibe. it re-inits the lock and sends it home to its pool. periodt. ✨

🦋 SYNOPSIS 🦋

void return_hash_lock_to_pool (struct hash_zone *zone , struct hash_lock *lock );

🎀 ARGUMENTS 🎀

• zone — the zone the lock was borrowed from 🫶 like, the original lender. the lock goes back here.
• lock — the actual lock that is no longer in use 😌 it's served its purpose, it's retired, it's going home.

👑 SEE ALSO 👑

okay so there is a whole friend group here and you're gonna meet all of them, no skipping 🔥 also heads up, there's a kernel file in the mix: ./drivers/md/dm-vdo/dedupe.c — that's where the lore lives, along with Introduction(9). here's everyone, in the order the manpage says, bestie:

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

like, the whole squad showed up 😭💜

and that's the page!! 💖✨ sourced straight from ./drivers/md/dm-vdo, dated October 2026, and yeah it's still wearing the return_hash_lock_to_pool(9) name tag 🎀 go return some locks, bestie, you got this 🫶🌸