dm_bio_integrity_rewind(9)

💫 dm_bio_integrity_rewind(9) — the Kernel API Manual page you didn't know you needed

okay so bestie, we're in the <pink>Kernel API Manual</pink> today and the star of the show is dm_bio_integrity_rewind — say that five times fast, i dare you 😭 it's literally the little function that could, and honestly? iconic.

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✨ NAME ✨

dm_bio_integrity_rewind — rewind integrity vector 🌀 that's it, that's the whole vibe check

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🌸 SYNOPSIS 🌸

void dm_bio_integrity_rewind (struct bio *bio , unsigned int bytes_done
);

no cap, that's the whole signature — she takes a bio and a bytes_done and returns void, meaning she gives you nothing back and expects you to be fine with it 💅 (she's not being rude, she's just updating state in place, iykyk).

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🎀 ARGUMENTS 🎀

• bio — the bio whose integrity vector we're updating 🦋 this is the main character right here, the one getting her integrity vector gently rewound.
• bytes_done — the number of data bytes to rewind 🔢 yes it's an unsigned int, no you cannot pass your feelings instead.

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🔥 DESCRIPTION 🔥

okay so here's the tea ☕ — this function does the math for you: it figures out how many integrity bytes the number of completed data bytes correspond to, and then it rewinds the integrity vector accordingly 🌀✨

so like, data bytes → integrity bytes → rewind. that's the pipeline. she calculates, she rewinds, she leaves. no drama, no notes, periodt 👑

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🫶 SEE ALSO 🫶

• Kernel file ./drivers/md/dm-io-rewind.c
• dm_bio_rewind(9) — her sibling!! go say hi 🧚

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fr fr, if you're digging around in dm-io-rewind.c this is your girl 🌈

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bye bestie, mwah 💖 — this lil page comes to you from ./drivers/md, dated October 2026, and it's giving Kernel API Manual energy all day long 🎀🦋