mtd_ooblayout_count_bytes(9)

📦 version 7.3.1, in nixpkgs unstable

💅 mtd_ooblayout_count_bytes 💅

okay bestie, so this is a Kernel API Manual page for the function mtd_ooblayout_count_bytes — like, that's the whole title, and yes it's a mouthful, but we move 🫶

✨ NAME ✨

mtd_ooblayout_count_bytes — literally just counts the number of bytes in a OOB category. That's it. That's the whole job. Iconic minimalism, honestly 🎀

🌸 SYNOPSIS 🌸

int mtd_ooblayout_count_bytes (struct mtd_info *mtd , int (*iter)(struct
mtd_info *, int section, struct mtd_oob_region *oobregion) );

like, look at that signature. she's giving "callback girlie meets struct" energy 💜

🦋 ARGUMENTS 🦋

  • mtd — the mtd info structure, aka the main character of this whole operation 👑
  • iter — the category iterator, aka the little function that goes around checking things for you 🧚

🌈 DESCRIPTION 🌈

So what does she do? She counts the number of bytes in a given category. That's the vibe check, and it passes ✨

Returns a positive value on success, and a negative error code otherwise. so like, if you get a negative back, that's your sign something went sideways — handle it, bestie 😭

💖 SEE ALSO 💖

Kernel file ./drivers/mtd/mtdcore.c — plus literally the whole friend group of MTD homies, no cap:

like, go read them. iykyk 💅

fr fr tho — the source lives in ./drivers/mtd, this drop is from October 2026, and it's all mtd_ooblayout_count_bytes(9) business. go off, kernel girlie 🌟💖🎀
📦 where this page comes from