ubi_add_to_av(9)

📦 version 7.3.1, in nixpkgs unstable

💅 ubi_add_to_av(9) — like, the Kernel API Manual entry, bestie 🎀

okay so picture this: it's a ubi_add_to_av kind of day, the manual is the Kernel API Manual, and you're about to learn how a used physical eraseblock gets filed into the attaching info. sit down, grab a strawberry drink 🍓, and let's go, because this one is lowkey iconic.

✨ NAME ✨

ubi_add_to_av — add a used physical eraseblock to the attaching information. that's the whole vibe. 🫶

🌸 SYNOPSIS 🌸

int ubi_add_to_av (struct ubi_device *ubi , struct ubi_attach_info *ai ,
       int pnum , int ec , const struct ubi_vid_hdr *vid_hdr , int bitflips );

yes bestie, it returns an int. six arguments. she's serving function signature and honestly? ate. 💅

🦋 ARGUMENTS 🦋

  • ubi — the UBI device description object. the main character of this whole situation, fr.
  • ai — the attaching information. all the deets live here. 💖
  • pnum — the physical eraseblock number. it's giving "which one tho". 🔥
  • ec — the erase counter. numbers, bestie. we love a number. ⭐
  • vid_hdr — the volume identifier header. the const struct ubi_vid_hdr *, no cap — const, so hands off. 🙈
  • bitflips — this one's a "if": if bit-flips were detected when this physical eraseblock was read. so like, did we catch some flips? 👀

🌈 DESCRIPTION 🌈

okay so here's the tea. this function adds information about a used physical eraseblock to the

(and yeah, the source text just cuts off right there mid-sentence 😭 not me, not my fault, that's literally how the page reads. we move.)

...because it has to handle cases when this is not the first physical eraseblock belonging to the same logical eraseblock 🧠✨. and when that happens? the newer one has to be picked (slay, queen 👑) while the older one has to be dropped (sorry babe, it's giving ✨over✨). no cap.

and the return values, because we always check those:

  • returns zero in case of success 😌💖
  • returns a negative error code in case of failure 💀

like literally always check the return value, i'm begging you. 🙏

🔥 SEE ALSO 🔥

main character cross-references, all from the kernel file ./drivers/mtd/ubi/attach.c — every single one of these links, keep them close:

like. the whole friend group showed up. 🫶💜

plug this page's file path ./drivers/mtd/ubi into your brain, and remember she was dated October 2026 — the Kernel API Manual, future-coded and fabulous. 👑🌈

k bye bestie, go read ubi_attach(9) next, mwah 💋🎀✨

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