bio_init_clone(9)

📦 version 7.3.1, in nixpkgs unstable

💅 bio_init_clone(9) — like, the Kernel API Manual page, bestie

okay so we're in the Kernel API Manual today and the function we're stanning is bio_init_clone. yes, it's a real one, and yes, it's giving "I clone bios and I share biovecs" main character energy. let me walk you through it 🫶

✨ NAME ✨

bio_init_clone — clones a bio, and the clone shares the original bio's biovec. that's the whole vibe, periodt.

🌸 SYNOPSIS 🌸

int bio_init_clone (struct block_device *bdev , struct bio *bio , struct
bio *bio_src , gfp_t gfp );

🎀 ARGUMENTS 🎀

  • bdev — the block_device you're cloning onto. where it's going 💖
  • bio — the bio you're cloning into. the destination, the new home, the fresh fit ✨
  • bio_src — the bio you're cloning from. the original, the blueprint, the source material 👑
  • gfp — the allocation priority. how hard you're allowed to try to get memory 🧚

🦋 DESCRIPTION 🦋

So what it actually does: it initializes a new bio in memory that you, the caller, provide — and that new bio is a clone of bio_src. no cap, you're handing it the space.

And the reuse rules? The same bio_vecs reuse and bio lifetime rules as bio_alloc_clone apply. that's it, that's the tea ☕ — different function, same rules, iykyk.

🔥 SEE ALSO 🔥

the whole friend group shows up here, and honestly? iconic. all of these are from the kernel file ./block/bio.c:

like, the entire roster. go read them, I'll wait 💅

and that's the page!! this lil beauty lives in the source ./block, and it's dated October 2026, and it's filed under bio_init_clone(9) — so if you forget where you found it, it's literally right there in the footer. mwah 💖 bye bestie, go clone some bios responsibly 🎀

📦 where this page comes from