binder_node_unlock(9)

💅 binder_node_unlock(9) — from the Kernel API Manual, bestie

Okay so picture this: it's a (9) manpage, it lives in the Kernel API Manual, and its whole entire name is binder_node_unlock. That's the vibe. Let's get into it ✨

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🌸 NAME 🌸

binder_node_unlock — release the spinlock for a given binder_proc. That's it, that's the whole job, and honestly? She does it flawlessly. 🎀

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✨ SYNOPSIS ✨

binder_node_unlock (node );

Yeah, one argument, no cap. Note the lil space before the closing paren — we keep it exactly like that, character for character, because we respect the source 💖

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🫶 ARGUMENTS 🫶

• node — a struct binder_node to acquire. Yep, that's what the page says: to acquire. We're not editing it, we're just reporting the news 📰

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💅 DESCRIPTION 💅

So what does she actually do? She releases the lock that you acquired via binder_node_lock.

That's the whole story, bestie. The matching lock, the matching unlock. It's giving "the way that binder_node_lock and binder_node_unlock are literally a matched set" 🔥 Don't leave the lock held, don't double-unlock, just... unlock. Periodt. 👑

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🦋 SEE ALSO 🦋

The kernel file this lives in is ./drivers/android/binder.c, and here is the entire friend group — every single one of them, no skips, no cuts 🙈

• binder_proc_lock(9)
• binder_proc_unlock(9)
• binder_inner_proc_lock(9)
• binder_inner_proc_unlock(9)
• binder_node_lock(9)
• binder_node_inner_lock(9)
• binder_node_inner_unlock(9)
• binder_worklist_empty(9)
• binder_enqueue_work_ilocked(9)
• binder_enqueue_deferred_thread_work_ilocked(9)
• binder_enqueue_thread_work_ilocked(9)
• binder_enqueue_thread_work(9)
• binder_dequeue_work(9)
• binder_select_thread_ilocked(9)
• binder_wakeup_thread_ilocked(9)
• binder_inc_node_tmpref(9)
• binder_dec_node_tmpref(9)
• binder_get_ref_for_node_olocked(9)
• binder_inc_ref_olocked(9)
• binder_dec_ref_olocked(9)
• binder_get_node_from_ref(9)
• binder_free_ref(9)
• binder_update_ref_for_handle(9)
• binder_dec_ref_for_handle(9)
• binder_inc_ref_for_node(9)
• binder_thread_dec_tmpref(9)
• binder_proc_dec_tmpref(9)
• binder_get_txn_from(9)
• binder_get_txn_from_and_acq_inner(9)
• binder_free_txn_fixups(9)
• binder_cleanup_transaction(9)
• binder_get_object(9)
• binder_validate_ptr(9)
• binder_validate_fixup(9)
• struct binder_task_work_cb(9)
• binder_do_fd_close(9)
• binder_deferred_fd_close(9)
• struct binder_ptr_fixup(9)
• struct binder_sg_copy(9)
• binder_do_deferred_txn_copies(9)
• binder_cleanup_deferred_txn_lists(9)
• binder_defer_copy(9)
• binder_add_fixup(9)
• binder_can_update_transaction(9)
• binder_find_outdated_transaction_ilocked(9)
• binder_proc_transaction(9)
• binder_get_node_refs_for_txn(9)
• binder_netlink_report(9)
• binder_free_buf(9)
• binder_apply_fd_fixups(9)
• print_next_binder_node_ilocked(9)

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Quick reminder before you go: this page documents exactly one thing — releasing a lock you got from binder_node_lock. Everything else lives in the pages above, iykyk 💀

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That's the whole page, bestie! Sourced from ./drivers/android, dated October 2026, and yes the footer still says binder_node_unlock(9) because we would never change her name 💜 🧚‍♀️