ubi_unregist...ume_notifier(9)

🦋 ubi_unregist...ume_notifier(9) 🦋

okay so bestie, welcome to the Kernel API Manual — yes that's the manual name, we're fancy here 💅 — and today's main character is a tiny little function with a big long name that we're gonna get you obsessed with. no cap, it's giving "one job and it does it."

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✨ NAME ✨

ubi_unregister_volume_notifier — unregister the volume notifier. literally that's it, that's the whole vibe 🎀

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🌸 SYNOPSIS 🌸

int ubi_unregister_volume_notifier (struct notifier_block *nb );

like, look at her. one argument. returns an int. iconic behavior fr fr 👑

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🫶 ARGUMENTS 🫶

• nb — the notifier description object 🧚 that's the thing you're handing over so it can be un-registered, bestie, keep it safe

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💖 DESCRIPTION 💖

okay so here's the tea ☕ — this function unregisters volume notifier nm, and honestly? she's a giver. it returns zero in case of success, and a negative error code in case of failure. so if you get 0 back you can do a little happy dance 💃, and if you get a negative number back... well 😭 at least you know.

ngl the important bit is the return value: zero = success, negative error code = failure. don't skip the vibe check on that return, bestie 🙈

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🌈 SEE ALSO 🌈

the kernel file lives at ./drivers/mtd/ubi/kapi.c 📁 and here's the whole squad, all of them, no skipping, we respect every single one:

• ubi_do_get_device_info(9)
• ubi_get_device_info(9)
• ubi_do_get_volume_info(9)
• ubi_get_volume_info(9)
• ubi_open_volume(9)
• ubi_open_volume_nm(9)
• ubi_get_num_by_path(9)
• ubi_open_volume_path(9)
• ubi_close_volume(9)
• leb_read_sanity_check(9)
• ubi_leb_read(9)
• ubi_leb_read_sg(9)
• ubi_leb_write(9)
• ubi_leb_erase(9)
• ubi_leb_unmap(9)
• ubi_leb_map(9)
• ubi_is_mapped(9)
• ubi_sync(9)
• ubi_register_volume_notifier(9)

(the last one is literally her sister function, matching set, we stan a duo 💜)

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okay that's the whole page, you ate that 🍓 mwah 💋

sign-off szn: this little gem lives in ./drivers/mtd/ubi, and the page is dated October 2026 ⭐ go forth and unregister responsibly, bestie 🦋✨🎀