exit_hash_lock(9)

💖 exit_hash_lock(9) 💖

okay so welcome to the Kernel API Manual, bestie — today’s main character is exit_hash_lock(9), and she is here to explain the exit moment for data_vios that are done being hash-lock agents. no cap, this one is short and iconic. 💅

🦋 NAME 🦋

exit_hash_lock — the bottleneck for data_vios that have written or deduplicated and that are no longer needed to be an agent for the hash lock. 🫶

✨ SYNOPSIS ✨

the signature is literally:

void exit_hash_lock (struct data_vio *data_vio );

🎀 ARGUMENTS 🎀

• data_vio — the data_vio to complete and send to be cleaned up. 💖

🌈 SEE ALSO 🌈

okay bestie, this is the full group chat of cross-references — every single one, no skips, periodt:

• 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)
• 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)

mwah 💋 — this page is from the ./drivers/md/dm-vdo source tree, October 2026. stay slay, bestie 🎀