filter_vdos_locked(9)

✨ NAME ✨

okay bestie, welcome to the filter_vdos_locked(9) page from the Kernel API Manual 🫶 This one is called filter_vdos_locked, and its whole deal is: find a vdo in the registry if it exists there. That’s the mission, no cap. ✨

🛠️ SYNOPSIS 🛠️

       struct vdo * filter_vdos_locked (vdo_filter_fn filter , const void
       *context );

🎀 ARGUMENTS 🎀

• filter — the filter function to apply to devices. that’s the function doing the filtering, bestie 👀
• context — a bit of context to provide the filter. a lil’ bundle of context handed to the filter 🎀

🔒 CONTEXT 🔒

Must be called holding the lock. 🚨 no cap, do not skip the lock. This is lock-held territory, periodt. 💅

💖 RETURN 💖

Returns the vdo object found, if any. that’s the return vibe: the found object, if there is one. 🫶

👀 SEE ALSO 👀

• Kernel file ./drivers/md/dm-vdo/vdo.c Introduction(9)
• vdo_initialize_device_registry_once(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_get_callback_thread_id(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)

mwah 💋 that’s the page, bestie. sign-off info: filter_vdos_locked(9) · source/version ./drivers/md/dm-vdo · October 2026 🌈🎀