[PATCH 0/5] UBI: make UBI devices dynamic

[Artem Bityutskiy <dedekind@infradead.org>]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 935 bytes --]

Hi,

here is a patchset which makes UBI devices dynamic. This means,
that you may attach/detach MTD devices runtime, not just when
UBI module is loaded/unloaded. This is very convinient - you do
may compile UBI into the kernel and attach/detach needed MTD
devices later, when your init scripts (loaded from initrd) decide
which exactly MTD device(s) to attach. This also makes testing
a lot easier.

The idea is similar to what the device mapper has: UBI creates
an UBI control device, which registers itself in UBI sysfs
hierarchy (/sys/class/ubi/ubi_ctrl) with dynamically allocated
major and minor numbers. The control device has 2 ioctls -
attach MTD device and detach MTD device.

This patchset applies on top of my other UBI changes and fixes,
which you may find in the UBI git.

I CC Frank and Andreas, as one of the main UBI users. I CC
Arnd as an ioctl expert.

--
Best regards,
Artem Bityutskiy (Битюцкий Артём)