transfer_allocation_lock(9)

✨ transfer_allocation_lock(9) ✨

okay bestie, welcome to the Kernel API Manual corner of the group chat 💅 this one is short and iconic: it's all about moving a downgraded allocation PBN lock over to the data_vio's hash lock and converting it into a duplicate PBN lock. no cap, every detail matters, so here's the whole thing 🫶

🌸 NAME 🌸

transfer_allocation_lock — transfers a data_vio's downgraded allocation PBN lock to the data_vio's hash lock, converting it to a duplicate PBN lock. that's the whole assignment, fr fr ✨

🎀 SYNOPSIS 🎀

here's the signature, character-for-character, don't @ me 😌

void transfer_allocation_lock (struct data_vio *data_vio );

🦋 ARGUMENTS 🦋

• data_vio — the data_vio holding the allocation lock to transfer. lowkey the main character of this function 👑

💜 SEE ALSO 💜

the whole squad, every single reference, no skipping 🫡

• 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)
• 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)
• 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)

💖 source/version: ./drivers/md/dm-vdo · date: October 2026 · later, bestie! 🎀