bio_split_to_limits(9)

📦 version 7.3.1, in nixpkgs unstable

💖 bio_split_to_limits(9) 💖

Okay bestie, welcome to the Kernel API Manual page for bio_split_to_limits(9) — literally the glow-up moment for splitting a bio so it fits the queue limits ✨

🌸 NAME 🌸

bio_split_to_limits — split a bio to fit the queue limits 🎀

🦋 SYNOPSIS 🦋

struct bio * bio_split_to_limits (struct bio *bio );

💅 ARGUMENTS 💅

  • bio — the bio that's getting split, periodt 💖

✨ DESCRIPTION ✨

So here's the vibe check 👑: this function checks if bio needs splitting based on the queue limits of bio->bi_bdev. If it does, it splits off a bio that fits those limits from the beginning of bio and returns it. Then bio is shortened to the remainder and re-submitted 🔥

The split bio is allocated from q->bio_split, which is provided by the block layer 🫶

🌈 SEE ALSO 🌈

Kernel file ./block/blk-merge.c — and these iconic little references:

Cute little sign-off time 🎀: this page's source/version tag is ./block, the date is October 2026, and yes, we're still talking about bio_split_to_limits(9) 💜🦋

📦 where this page comes from