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	for linux-mtd@lists.infradead.org; Fri, 22 Jun 2007 06:10:47 -0400
Subject: Re: UBI - Nand bad block management details required
From: Artem Bityutskiy <dedekind@infradead.org>
To: Sudeep K N <sudeepholla.maillist@gmail.com>
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Date: Fri, 22 Jun 2007 13:10:30 +0300
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On Fri, 2007-06-22 at 15:36 +0530, Sudeep K N wrote:
> Does the UBI depend on the bad block table(BBT) built by MTD?

Yes, it asks MTD if blocks are bad or not.

> In otherwords, can the complete chip scan during chip probe be avoided
> by enabling/setting NAND_SKIP_BBTSCAN in chip->options?

No, UBI relies on MTD in this. MTD supports on-flash BBT tables, so if
you do not want MTD level to do full chip scan you should use on-flash
BBT.

> Does UBI built BBT independent of the MTD built BBT?

No, it relies on MTD.

--=20
Best regards,
Artem Bityutskiy (=D0=91=D0=B8=D1=82=D1=8E=D1=86=D0=BA=D0=B8=D0=B9 =D0=90=
=D1=80=D1=82=D1=91=D0=BC)