finish_deduping(9)

💖 finish_deduping(9) 💖

okay bestie, this is finish_deduping(9) from the Kernel API Manual, and it’s literally the moment where a data_vio is done deduplicating against the block locked by the hash lock ✨

🌸 NAME 🌸

finish_deduping — handle a data_vio that has finished deduplicating against the block locked by the hash lock.

🎀 SYNOPSIS 🎀

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

🦋 ARGUMENTS 🦋

okay so these are the two things you hand over:

• lock — the hash lock.
• data_vio — the lock holder that has finished deduplicating.

✨ DESCRIPTION ✨

If other data_vios are still sharing the lock, this just releases this data_vio’s share of the lock and finishes processing the data_vio 💅

If this is the last data_vio holding the lock, then this makes the data_vio the lock agent, and it uses that data_vio to advance the state of the lock so the lock can eventually be released 👑

🌈 SEE ALSO 🌈

• 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)
• 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 💋 that’s the whole page, bestie — brought to you from ./drivers/md/dm-vdo, dated October 2026, and signed finish_deduping(9) with love 🎀