ubi_resize_volume(9)

💅 ubi_resize_volume(9) 💅

okay so bestie, welcome to the Kernel API Manual entry for ubi_resize_volume — yes it's a section 9 page, yes it's iconic, let's get into it 🎀

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✨ NAME ✨

ubi_resize_volume — re-size volume. that's it. that's the whole vibe. glow-up for your volume, no cap 💖

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🌸 SYNOPSIS 🌸

int ubi_resize_volume (struct ubi_volume_desc *desc , int reserved_pebs
);

like literally that's the whole signature. look at her go ✨

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🦋 ARGUMENTS 🦋

• desc — the volume descriptor, i.e. your lil VIP pass to the volume you're about to glow up 🫶
• reserved_pebs — the new size, measured in physical eraseblocks. yes physical eraseblocks. that's the unit. periodt.

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🔥 DESCRIPTION 🔥

so what does she actually do? ubi_resize_volume re-sizes the volume 💅 and then:

• returns zero on success — slay, ate, no notes
• returns a negative error code if it fails 😭 it's giving "not every resize is a main character"

⚠️ ok important bestie, do NOT skip this: the caller has to have the ubi->device_mutex locked. locked. as in, you gotta hold it before you call this. not optional, not a suggestion, fr fr 🔒

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🌈 SEE ALSO 🌈

go read the kernel file ./drivers/mtd/ubi/vmt.c (yes, literally that path, iykyk 🧚) and then check out her whole friend group:

• ubi_create_volume(9)
• ubi_remove_volume(9)
• ubi_rename_volumes(9)
• ubi_add_volume(9)
• ubi_free_volume(9)
• self_check_volume(9)
• self_check_volumes(9)

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💀 lowkey reminder that this whole page lives in the kernel source tree at ./drivers/mtd/ubi — that's the source/version vibe

okay bye bestie, go resize something responsibly, and remember: lock that mutex first 👑💖

✧･ﾟ: * ubi_resize_volume(9) — Kernel API Manual — October 2026 * :ﾟ･✧ 🎀🦋🌸