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SubjectRe: [PATCH 00/22 take 3] UBI: Unsorted Block Images
On Sun, 2007-03-18 at 11:27 -0500, Matt Mackall wrote:
> Forgive my ignorance, but why did you not implement the two features
> above as device mapper layers instead? A device mapper can arbitrarily
> transform I/O addresses and contents and has direct access to the
> mapped device's ioctl interfaces, etc.

Just because UBI is designed for flash devices, not block devices. Note,
UBI is not for MMC/USB stick/SC/etc flashes, which are used as block
devices, but for _bare_ flashes.

Please, glance here to find more information about the different between
flashes and block devices:

Best regards,
Artem Bityutskiy (Битюцкий Артём)

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