From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-bk0-f49.google.com ([209.85.214.49]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1SgiYn-0008Ha-Ox for linux-mtd@lists.infradead.org; Mon, 18 Jun 2012 20:28:30 +0000 Received: by bkwj4 with SMTP id j4so5085924bkw.36 for ; Mon, 18 Jun 2012 13:28:28 -0700 (PDT) Message-ID: <1340051296.1971.5.camel@koala> Subject: Re: [PATCH] mtd: nand: Use the mirror BBT descriptor when reading its version From: Artem Bityutskiy To: Robert Jarzmik Date: Mon, 18 Jun 2012 23:28:16 +0300 In-Reply-To: <87ehpc1oyb.fsf@free.fr> References: <20120610135812.01dce4e7@pixies.home.jungo.com> <1339497736.2401.24.camel@sauron.fi.intel.com> <1340017963.2420.29.camel@sauron.fi.intel.com> <87ehpc1oyb.fsf@free.fr> Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="=-YCXHW71VKs60BPr3Dmj+" Mime-Version: 1.0 Cc: Mike Dunn , Sebastian Andrzej Siewior , linux-mtd@lists.infradead.org, Shmulik Ladkani , Brian Norris , David Woodhouse List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , --=-YCXHW71VKs60BPr3Dmj+ Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Mon, 2012-06-18 at 19:59 +0200, Robert Jarzmik wrote: > To store worn out blocks, each filesystem implementation has to do someth= ing > smart. UBI has it way, SAFTL (docg3 fs) has its way, etc ... UBI does not do anything about storing the bad block table. UBI relies on the MTD layer - it may mark a block as bad and MTD should take care of storing this information either in the OOB or in the BBT on in both places. > But in the end, the bad block table is immutable, and represents factory = bad > blocks, not up-to-date list of bad blocks. How do you store the information about the later developed bad blocks? > As to whether you should kill it or not, it's up to the maintainer of dis= konchip > I suppose. There is no DoC maintainer, you can consider yourself to be the maintainer, because you and Mike are the only people who care about this AFAICS. --=20 Best Regards, Artem Bityutskiy --=-YCXHW71VKs60BPr3Dmj+ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAABAgAGBQJP349gAAoJECmIfjd9wqK0rm4QALYrfSPP4WX4EtKwgrWUcDbO 0oij6xTfP+npGv9sjssxA8uuDKmZ4fGLJ8i7IBDv+ldtvp5V9isnTeD0iKK1P2Iy dWeyJvNAsYSsqYJj/FnwAjX7dfb1/vCvjAYz4J7ObGBw7IodlNPxKu/+R3ix7qAg EznYIMIQ9YIyhD90TXgIvwiov1PrM+vw5rwDFAU7NgyurDTibH6snGYsKBfTR/Cm 3RxPlutQMH/tgbgYsnuAEWAgGs/SujDM0E9+exJVsO9SWPXQ44T0T93x3qb7pGxV dZorZwYxZ2BRHvBYKVtC5dACxxH4gVdQWKbLbKrp1X/Bqe89YBNZRWQQxXIK2aEg oRcHa8u/hK4SQmGam4WzDxMoOphsY/L/EczcogRxrPlWpvzlcuYQoobXtnjh+Yf0 tahL+GSz9o6FFjM83rHNvGMvC3aOAE3DRdaAjOIpbjC++D1oleTzRDcpCSoXyQ/I DTLMfK6xdpdtrr0M9XmWaQ1kDQYaEFzektsBFxDBKx1UYv6g0iTVztMYLP3xH962 N8G2gnM7cy2olBFDMNMBdxN+NysHotCHbPhvf7HLd9NnTO26wKEtY08eSp3PHidR 3O0HwsubzSgew0PzQIDcNcB/qeIj47ok3JOf95VLnfzf1XT16+Jt9VaFp9YAN2CX FALtMbivuCcmoHdvWUO/ =bVWp -----END PGP SIGNATURE----- --=-YCXHW71VKs60BPr3Dmj+--