vdo_get_duplicate_lock(9)

💅 vdo_get_duplicate_lock(9) — Kernel API Manual

okay bestie, so this is one of those little (9) kernel API pages, like the ones tucked away in the ./drivers/md/dm-vdo corner of the tree. It's literally one function, but she's an important one 🫶

---

✨ NAME ✨

vdo_get_duplicate_lock — get the PBN lock on the duplicate data location for a data_vio, grabbed from the hash_lock that the data_vio holds (if there is one, no cap).

---

🌸 SYNOPSIS 🌸

struct pbn_lock * vdo_get_duplicate_lock (struct data_vio *data_vio );

---

🎀 ARGUMENTS 🎀

• data_vio — the data_vio we're querying, bestie. That's the one.

---

🦋 RETURN 🦋

The PBN lock on the data_vio's duplicate location. That's it, that's the whole vibe ✨

---

🔥 SEE ALSO 🔥

okay this list is long, ngl, but we are not skipping a single one of her friends 💖

• Kernel file ./drivers/md/dm-vdo/dedupe.c Introduction(9)
• return_hash_lock_to_pool(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)
• 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)

---

that's the whole page, bestie, no notes 💀 stay obsessed, and remember: dedupe gang forever 👑

this one comes to you from ./drivers/md/dm-vdo, dated October 2026 — mwah, ilysm, see u in the group chat 🎀💜