vdo_save_super_block(9)

💾 NAME 💾

okay so this is the vdo_save_super_block(9) page from the Kernel API Manual, and the whole assignment is literally this: save the component states to the super block asynchronously ✨. That's the vibe, that's the task, no cap 💅.

🌸 SYNOPSIS 🌸

void vdo_save_super_block (struct vdo *vdo , struct vdo_completion
       *parent );

🎀 ARGUMENTS 🎀

• vdo — the vdo whose state is being saved. Like, this is the main character of the save operation 👑.
• parent — the completion to notify when the save is complete. Basically when it's done, parent gets the lil ping 📣.

🦋 SEE ALSO 🦋

the whole friend group is linked here — every single reference, kept exactly as the manual says 💖:

• 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_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 💋 — source/version footer deets: ./drivers/md/dm-vdo, date: October 2026, page: vdo_save_super_block(9). 🫶