get_bio_list(9)

💅 get_bio_list(9) — like, the Kernel API Manual girlies know

Okay bestie, so this is a page from the Kernel API Manual — get_bio_list(9), no cap. Let's get into it ✨

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🎀 NAME 🎀

get_bio_list — extracts the list of bios to submit from a vio. That's the whole vibe. 💅

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🌸 SYNOPSIS 🌸

struct bio * get_bio_list (struct vio *vio );

Literal icon behavior. Striking pose, returning a struct bio *, takes exactly one argument. Periodt. 🔥

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🦋 ARGUMENTS 🦋

• vio — the vio that's submitting I/O. That's it, that's the whole argument. The main character of this function call. 👑

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💖 DESCRIPTION 💖

So the list you get back? It's never empty — like, literally always contains at least one entry, and that entry is the bio for the vio you called it on. But also, plot twist: other bios may have been merged in with it too 🫶. Gotta love a merge, honestly — it's giving "found family." 😭

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⭐ RETURN ⭐

Returns the head of the bio list to submit. Head of the list. Go off, king. 👑

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🌈 SEE ALSO 🌈

Kernel file ./drivers/md/dm-vdo/io-submitter.c — and the whole friend group:

• count_all_bios(9)
• assert_in_bio_zone(9)
• send_bio_to_device(9)
• vdo_submit_vio(9)
• submit_data_vio(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)

Squad goals fr fr 🧚💜

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Okay that's the whole page, bestie — no notes, ate and left no crumbs 🍓. This little beauty lives out of ./drivers/md/dm-vdo, dated October 2026, so remember to cite her properly, mwah 💋✨