flush_vdo(9)

💖 NAME 💖

okay so bestie, this is flush_vdo(9) from the Kernel API Manual ✨ and ngl its whole thing is: it starts processing a flush request. that's the vibe. 💅

🦋 SYNOPSIS 🦋

void flush_vdo (struct vdo_completion *completion );

🎀 ARGUMENTS 🎀

• completion — a flush request, and it comes in as a vdo_completion 💖

🌸 DESCRIPTION 🌸

so this callback is registered in launch_flush — that's the detail, and it's giving “small but important” fr fr. 🫶

🔥 SEE ALSO 🔥

the kernel file is literally ./drivers/md/dm-vdo/flush.c, and the whole related-page friend group is:

• assert_on_flusher_thread(9)
• as_flusher(9)
• completion_as_vdo_flush(9)
• vdo_waiter_as_flush(9)
• vdo_make_flusher(9)
• vdo_free_flusher(9)
• vdo_get_flusher_thread_id(9)
• finish_notification(9)
• flush_packer_callback(9)
• increment_generation(9)
• notify_flush(9)
• check_for_drain_complete(9)
• vdo_complete_flushes(9)
• vdo_dump_flusher(9)
• initialize_flush(9)
• vdo_launch_flush(9)
• release_flush(9)
• vdo_complete_flush_callback(9)
• select_bio_queue(9)
• vdo_complete_flush(9)
• vdo_drain_flusher(9)
• vdo_resume_flusher(9)

okay bye bestie 💋 — source/version: ./drivers/md/dm-vdo; date: October 2026; page: flush_vdo(9). periodt. 🌈