unlock_duplicate_pbn(9)

💅 unlock_duplicate_pbn(9) 💅

okay so bestie, welcome to the Kernel API Manual — this one is literally about unlock_duplicate_pbn(9), and it's giving "release the read lock" main character energy. 💖

🎀 NAME 🎀

unlock_duplicate_pbn — release a read lock on the PBN of the block that may or may not have contained duplicate data. no cap, that's the whole mission. ✨

🌸 SYNOPSIS 🌸

void unlock_duplicate_pbn (struct vdo_completion *completion );

🦋 ARGUMENTS 🦋

• completion — the completion of the data_vio acting as the lock's agent. she's the designated lock agent, periodt. 💅

✨ DESCRIPTION ✨

okay so this continuation is launched by start_unlocking, and it calls back to finish_unlocking on the hash zone thread. that's the relay race, bestie — start_unlocking hands it off, and finish_unlocking gets the callback on the hash zone thread. 🫶

🔥 SEE ALSO 🔥

bestie, the whole friend group is here — every reference and the kernel file, exactly as listed:

• 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)
• 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 💋 that's the page, bestie. shoutout to the source/version ./drivers/md/dm-vdo and the October 2026 date for unlock_duplicate_pbn(9) — iconic, fr fr. 🎀