vdo_get_callback_thread_id(9)

💖 NAME 💖

okay so bestie, this page is vdo_get_callback_thread_id(9) from the Kernel API Manual, and it’s giving “tiny helper, very specific job.” ✨

vdo_get_callback_thread_id — get the id of the callback thread that a completion is currently running on. That’s the whole assignment, no cap. 💅

📜 SYNOPSIS 📜

the signature is minimal and iconic:

thread_id_t vdo_get_callback_thread_id (void );

🎀 ARGUMENTS 🎀

• void — no arguments. literally none, bestie. not a single one. 🫶

🌈 RETURN 🌈

It returns the current thread ID, or -1 if there’s no such thread. So if you get -1, that’s the “no such thread” answer — don’t panic. 💀

🦋 SEE ALSO 🦋

the whole friend group, iykyk:

• Kernel file ./drivers/md/dm-vdo/vdo.c Introduction(9)
• vdo_initialize_device_registry_once(9)
• filter_vdos_locked(9)
• vdo_find_matching(9)
• initialize_thread_config(9)
• get_thread_name(9)
• vdo_make_thread(9)
• register_vdo(9)
• vdo_format(9)
• initialize_vdo(9)
• vdo_make(9)
• free_listeners(9)
• unregister_vdo(9)
• vdo_destroy(9)
• finish_reading_super_block(9)
• handle_super_block_read_error(9)
• vdo_load_super_block(9)
• vdo_get_backing_device(9)
• vdo_get_device_name(9)
• vdo_synchronous_flush(9)
• vdo_get_state(9)
• vdo_set_state(9)
• vdo_get_admin_state(9)
• record_vdo(9)
• continue_parent(9)
• handle_geometry_block_save_error(9)
• vdo_save_geometry_block(9)
• handle_super_block_save_error(9)
• vdo_save_super_block(9)
• vdo_save_components(9)
• vdo_register_read_only_listener(9)
• notify_vdo_of_read_only_mode(9)
• vdo_enable_read_only_entry(9)
• vdo_wait_until_not_entering_read_only_mode(9)
• as_notifier(9)
• finish_entering_read_only_mode(9)
• make_thread_read_only(9)
• vdo_allow_read_only_mode_entry(9)
• vdo_enter_read_only_mode(9)
• vdo_is_read_only(9)
• vdo_in_read_only_mode(9)
• vdo_in_recovery_mode(9)
• vdo_enter_recovery_mode(9)
• complete_synchronous_action(9)
• perform_synchronous_action(9)
• set_compression_callback(9)
• vdo_set_compressing(9)
• vdo_get_compressing(9)
• vdo_get_physical_blocks_allocated(9)
• vdo_get_physical_blocks_overhead(9)
• get_vdo_statistics(9)
• vdo_fetch_statistics_callback(9)
• vdo_fetch_statistics(9)
• vdo_dump_status(9)
• vdo_assert_on_admin_thread(9)
• vdo_assert_on_logical_zone_thread(9)
• vdo_assert_on_physical_zone_thread(9)
• vdo_get_physical_zone(9)

kisses, bestie 💋 this page is brought to you by the source ./drivers/md/dm-vdo, dated October 2026, and it’s still vdo_get_callback_thread_id(9) — periodt. 🫶