Re: [PATCH 00/22 take 3] UBI: Unsorted Block Images

From: Artem Bityutskiy
Date: Sun Mar 18 2007 - 12:50:32 EST


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:

http://www.linux-mtd.infradead.org/faq/general.html#L_mtd_vs_hdd

--
Best regards,
Artem Bityutskiy (ÐÐÑÑÑÐÐÐ ÐÑÑÑÐ)

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/