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Subject: Re: [PATCH v3 0/6] NAND BBM + BBT updates
From: Artem Bityutskiy <dedekind1@gmail.com>
To: Angus CLARK <angus.clark@st.com>
Date: Tue, 17 Jan 2012 15:33:47 +0200
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Cc: Dan Carpenter <error27@gmail.com>, Kulikov Vasiliy <segooon@gmail.com>,
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On Tue, 2012-01-17 at 10:22 +0000, Angus CLARK wrote:
> On 01/11/2012 10:28 PM, Artem Bityutskiy wrote:
> > In my view, OOB BB markers is the primary, reliable, and simple
> > mechanism. And BBT is just an additional optimization to speed up syste=
m
> > startup.
>=20
> This seems to be contrary to the advice given by the various NAND manufac=
turers
> (with a quite unusual show of consensus!)  Once a block has been deemed t=
o have
> gone bad, one cannot rely on *any* operations being successful, and that
> includes writing a bad block marker to the OOB area.  The recommended app=
roach
> has for some time been to use a Flash-resident bad block table, with an i=
nitial
> scan for the manufacturer-programmed bad-block markers.

OK, thanks for correction and information.

--=20
Best Regards,
Artem Bityutskiy

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