ubi_update_reserved(9)

💅 ubi_update_reserved(9) — the Kernel API Manual, but make it cute ✨

okay so bestie, this is the ubi_update_reserved(9) page from the Kernel API Manual. It's giving tiny function, extremely specific job, lock discipline required energy. Let's go 🫶

🌟 NAME 🌟

ubi_update_reserved — update bad eraseblock handling accounting data. 🧾✨

🛠️ SYNOPSIS 🛠️

void ubi_update_reserved (struct ubi_device *ubi );

🌸 ARGUMENTS 🌸

• ubi — UBI device description object. literally the device info struct this function works with 💖

🔥 DESCRIPTION 🔥

okay so here's the vibe: this function calculates the gap between the current number of PEBs reserved for bad eraseblock handling and the required level of PEBs that must be reserved. If necessary, it reserves more PEBs to fill that gap, according to availability. No cap, it's doing reserved-PEB math and topping things up when it can. 🧮✨

⚠️ lock-check time, bestie: this should be called with ubi->volumes_lock held. Keep that in mind before you call it. 🔒💅

👀 SEE ALSO 👀

• Kernel file ./drivers/mtd/ubi/misc.c
• ubi_calc_data_len(9)
• ubi_check_volume(9)
• ubi_calculate_reserved(9)
• ubi_check_pattern(9)

🫶 and that's the page, bestie — source/version: ./drivers/mtd/ubi; date: October 2026. periodt. 💖