release_flush(9)

💅 release_flush(9) — fresh from the Kernel API Manual 💅

okay so bestie, this is the page for release_flush, and it is lowkey iconic cleanup behavior. We are keeping every detail, no cap.

✨ NAME ✨

release_flush — releases a vdo_flush structure once it has completed its work.

🌸 SYNOPSIS 🌸

the signature is literally:

void release_flush (struct vdo_flush *flush );

🎀 ARGUMENTS 🎀

• flush — the completed flush structure that’s ready to be re-used or freed. That’s the whole argument, bestie.

🦋 DESCRIPTION 🦋

Here’s the flow, and it’s giving spare-structure management:

• If there are pending flush requests whose vdo_flush allocation failed, they get launched by immediately re-using the released vdo_flush.
• If there is no spare vdo_flush, the released structure becomes the spare.
• Otherwise, the vdo_flush gets freed.

periodt — that’s literally the whole description.

🌈 SEE ALSO 🌈

Kernel file ./drivers/md/dm-vdo/flush.c — that’s the home base. The SEE ALSO crew 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)
• flush_vdo(9)
• check_for_drain_complete(9)
• vdo_complete_flushes(9)
• vdo_dump_flusher(9)
• initialize_flush(9)
• vdo_launch_flush(9)
• vdo_complete_flush_callback(9)
• select_bio_queue(9)
• vdo_complete_flush(9)
• vdo_drain_flusher(9)
• vdo_resume_flusher(9)

xoxo, your release_flush(9) bestie from ./drivers/md/dm-vdo, October 2026 💖