ubi_io_mark_bad(9)

💖 ubi_io_mark_bad(9) 💖

okay so bestie, welcome to the Kernel API Manual page for ubi_io_mark_bad(9) — yes that's the whole header, we're folding it in like a cute little intro, you're welcome ✨

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🌸 NAME 🌸

ubi_io_mark_bad — literally the function that marks a physical eraseblock as bad 💅 like it's tagging a PEB as "do not perceive her" 🚫

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🦋 SYNOPSIS 🦋

int ubi_io_mark_bad (const struct ubi_device *ubi , int pnum );

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🎀 ARGUMENTS 🎀

• ubi — the UBI device description object 🫶 like, the whole vibe of the device, packaged up
• pnum — the physical eraseblock number you're marking. yes, that PEB. her. 👑

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⭐ DESCRIPTION ⭐

so here's the tea, no cap 🍓: this function returns zero in case of success, and a negative error code in case of failure. that's it. that's the whole behavior. slay, honestly — simple, iconic, main character energy 👑

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🧚 SEE ALSO 🧚

like, go read these next, iykyk 💜 — kernel file ./drivers/mtd/ubi/io.c, plus:

• ubi_io_read(9)
• ubi_io_write(9)
• do_sync_erase(9)
• torture_peb(9)
• nor_erase_prepare(9)
• ubi_io_sync_erase(9)
• ubi_io_is_bad(9)
• validate_ec_hdr(9)
• ubi_io_read_ec_hdr(9)
• ubi_io_write_ec_hdr(9)
• validate_vid_hdr(9)
• ubi_io_read_vid_hdr(9)
• ubi_io_write_vid_hdr(9)
• self_check_not_bad(9)
• self_check_ec_hdr(9)
• self_check_peb_ec_hdr(9)
• self_check_vid_hdr(9)
• self_check_peb_vid_hdr(9)
• self_check_write(9)
• ubi_self_check_all_ff(9)

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🌈 that's the whole page bestie, go forth and mark those bad blocks. mwah 💋

and that's a wrap from ./drivers/mtd/ubi, dated October 2026 — catch you in the group chat, ubi_io_mark_bad(9) out 🎀💖✨