nand_scan_bbt(9)

📦 version 7.3.1, in nixpkgs unstable

💅 nand_scan_bbt(9) — the Kernel API Manual, bestie edition ✨

okay so this is nand_scan_bbt from the Kernel API Manual, and honestly? she's a whole main character in the NAND lore. let's get into it 🫶

🌸 NAME 🌸

nand_scan_bbt — [NAND Interface] scan, find, read and maybe create bad block table(s)

like yes she scans, yes she finds, yes she reads, and yes she might create the bad block table(s). multi-talented fr fr 👑

⭐ SYNOPSIS ⭐

int nand_scan_bbt (struct nand_chip *this , struct nand_bbt_descr *bd );

copy it exactly bestie, spacing and all, no cap 💅

🎀 ARGUMENTS 🎀

  • this — the NAND device. the actual gadget itself, the star of the show 💖
  • bd — descriptor for the good/bad block search pattern. this is the little blueprint that tells her what a good block looks like vs a bad block, iykyk 🔍

🦋 DESCRIPTION 🦋

so first things first — the function checks, if a bad block table(s) is/are already available. like, is the table already sitting there? cool, we love a prepared queen ✨

if not? she scans the device for manufacturer marked good / bad blocks and writes the bad block table(s) to the selected place. literally going out there, hunting down every manufacturer-marked good block and bad block, and then writing the table(s) to wherever was selected. obsessed with the dedication 😭🔥

⚠️ important lore drop: the bad block table memory is allocated here. it must be freed by calling the nand_free_bbt function. no leaks in this house, we free our memory, periodt 💀

🌈 SEE ALSO 🌈

the whole friend group, honestly — check them out in the kernel file ./drivers/mtd/nand/raw/nand_bbt.c:

all iconic, all linked, go read them 💜

and that's the whole page, bestie — brought to you by the fine folks over at ./drivers/mtd/nand/raw, dated October 2026. mwah, stay scanned 💋🧚‍♀️

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