early_erase_peb(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 early_erase_peb(9) 🌸

okay bestie, so this one's from the Kernel API Manual (it's early_erase_peb, manual section 9, iykyk) and it's literally about wiping a physical eraseblock clean before anybody else has set up shop. tiny function, big responsibility. let's get into it 💅

✨ NAME ✨

early_erase_peb — erase a physical eraseblock.

like, that's it. that's the whole job. erase the block. slay 🎀

✨ SYNOPSIS ✨

int early_erase_peb (struct ubi_device *ubi , const struct
       ubi_attach_info *ai , int pnum , int ec );

she returns an int, she takes four things, she's iconic, periodt 💖

✨ ARGUMENTS ✨

  • ubi — the UBI device description object 🫶 like, the whole device's lil profile card.
  • ai — attaching information. the lore, the backstory, the attach-time tea ☕
  • pnum — physical eraseblock number to erase; (yes it has a semicolon in the original, we respect the semicolon 🫡)
  • ec — erase counter value to write, and it takes UBI_UNKNOWN if it is unknown. no cap, that's the sentinel 💀

✨ DESCRIPTION ✨

okay so here's the vibe: this function erases physical eraseblock pnum, and then writes the erase counter header to it. erase, then header. two-step. ate. 🔥

⚠️ real talk though — this function should only be used on UBI device initialization stages, when the EBA sub-system had not been yet initialized. like, EBA isn't awake yet, don't try this later, bestie, it's literally not the moment 🙈

This function returns zero in case of success and a negative error code in case of failure. zero = we thriving ✨, negative = something's giving "uh oh" 😭

✨ SEE ALSO ✨

Kernel file ./drivers/mtd/ubi/attach.c — and the whole friend group 🦋:

💖 and that's the whole page, bestie 💖

this lil baddie lives in ./drivers/mtd/ubi and she was dated October 2026 — go drink some water, back up your flash, and remember: initialization-stage functions stay in initialization stages 💜🧚‍♀️

📦 where this page comes from