bio_next_split(9)

📦 version 7.3.1, in nixpkgs unstable

💫 bio_next_split — kernel API manual, but make it make sense 💫

okay bestie, welcome to bio_next_split(9), straight out of the Kernel API Manual ✨ this one's short and sweet and honestly kind of a slay — it's the "gimme the next chunk of this bio, and yeah split it if you gotta" function 🎀

🌸 NAME 🌸

bio_next_split — get next @sectors from a bio, splitting if necessary 💅

like, it literally does what it says on the tin, no cap.

✨ SYNOPSIS ✨

struct bio * bio_next_split (struct bio *bio , int sectors , gfp_t gfp ,
       struct bio_set *bs );

look at her. iconic signature. four args, one struct bio * out the door 🫶

🦋 ARGUMENTS 🦋

  • bio — the bio you're splitting, bestie. this is the one getting carved up ✂️
  • sectors — how many sectors you wanna split off the front of bio. front only, we're not chaotic 🙈
  • gfp — the gfp mask 🌱 (yes, that one, the allocation-flags one, you know her)
  • bs — the bio set you're allocating from 🧚

⭐ RETURN ⭐

it hands you back a bio representing the next sectors of bio 💖

aaaand the plot twist: if the bio is smaller than sectors, it returns the original bio unchanged. no splitting, no drama, just the same pointer back at you 😌 periodt.

👑 SEE ALSO 👑

kernel file ./include/linux/bio.h — and the whole friend group:

go read those too, they're all lowkey important 💜

ngl this page is short but it ate. remember the front-splitting and the unchanged-original-bio thing, those are the whole vibe check 🔥

and that's the whole page, bestie 🍓

signing off from ./include/linux — October 2026 — this has been your girl, bio_next_split(9), stay hydrated and may all your bios be bigger than your sectors 🌈💅

📦 where this page comes from