wait_on_hash_lock(9)

✨ NAME ✨

okay so bestie, welcome to wait_on_hash_lock(9) from the Kernel API Manual — yes, that manual. This function is literally here to add a data_vio to the lock's queue of waiters, and that's the whole vibe: wait_on_hash_lock — Add a data_vio to the lock's queue of waiters. 🫶

🦋 SYNOPSIS 🦋

the signature is giving “short and iconic,” no return value to catch, periodt:

void wait_on_hash_lock (struct hash_lock *lock , struct data_vio
       *data_vio );

🎀 ARGUMENTS 🎀

• lock — the hash lock on which to wait. yes, that exact lock, bestie. 🔒
• data_vio — the data_vio to add to the queue. it's joining the waiter lineup. 🧚

🌈 SEE ALSO 🌈

lowkey a whole friend group of cross-references, and every single one is invited — no skips:

• 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)
• 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)

cute sign-off, bestie: this page's source/version is ./drivers/md/dm-vdo, dated October 2026, for wait_on_hash_lock(9) — byeeee 💖✨