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Date: Sun, 18 Mar 2007 18:49:39 +0200 From: Artem Bityutskiy <dedekind@...radead.org> To: Matt Mackall <mpm@...enic.com> Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Frank Haverkamp <haver@...t.ibm.com>, Christoph Hellwig <hch@...radead.org>, David Woodhouse <dwmw2@...radead.org>, Josh Boyer <jwboyer@...ux.vnet.ibm.com> Subject: Re: [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: http://www.linux-mtd.infradead.org/faq/general.html#L_mtd_vs_hdd -- Best regards, Artem Bityutskiy (Битюцкий Артём) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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