submit_data_vio(9)

💅 submit_data_vio(9) — a Kernel API Manual moment ✨

okay so bestie, welcome to the Kernel API Manual, section 9 — yes, the big-girl section, we love that for us 🎀 this one's all about submit_data_vio, and honestly? she's giving "quietly essential middle manager of the I/O world" and we're obsessed 💖

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✨ NAME ✨

submit_data_vio — literally submits a data_vio's bio down to the storage below, along with any bios that have been merged with it 🫶 like she's not going alone, she's bringing her merged besties with her, periodt.

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🌸 SYNOPSIS 🌸

void submit_data_vio (struct vdo_completion *completion );

that's it, that's the whole vibe check ✨

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🦋 ARGUMENTS 🦋

• completion — the vio you're submitting 👑 literally the main character here, no cap.

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💜 CONTEXT 💜

okay so this is the important part, bestie, pay attention 🙈 this call may block, which means it is not for just any random thread that feels like calling it — it should only be called from a bio thread ⭐ like, that's her designated lane, respect it 💅

fr fr, don't be out here calling this from a thread that isn't a bio thread. it blocks. it said what it said 😭

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💀 SEE ALSO 💀

the whole friend group, iykyk 💖 all from the kernel file ./drivers/md/dm-vdo/io-submitter.c:

• count_all_bios(9)
• assert_in_bio_zone(9)
• send_bio_to_device(9)
• vdo_submit_vio(9)
• get_bio_list(9)
• get_mergeable_locked(9)
• try_bio_map_merge(9)
• vdo_submit_data_vio(9)
• __submit_metadata_vio(9)
• vdo_submit_metadata_vio_wait(9)
• vdo_make_io_submitter(9)
• vdo_cleanup_io_submitter(9)
• vdo_free_io_submitter(9)

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and that's the page, bestie 🧚 this lil gem lives at ./drivers/md/dm-vdo and it's dated October 2026 🌈 consider this your cute lil sign-off, mwah 💋✨