linux-kernel - Re: [patch] Adding Secure Deletion to UBIFS

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Message-ID: <1329152067.22240.214.camel@sauron.fi.intel.com>
Date:	Mon, 13 Feb 2012 18:54:27 +0200
From:	Artem Bityutskiy <dedekind1@...il.com>
To:	Joel Reardon <joel@...mbassador.com>
Cc:	linux-mtd@...ts.infradead.org, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [patch] Adding Secure Deletion to UBIFS

Hi, I will try to get into more details soon, but to keep you busy - the
first thing to start is to introduce new on-flash format version -
because you need more space in 'struct ubifs_branch'

On Thu, 2012-02-09 at 16:24 +0100, Joel Reardon wrote:
> @@ -742,6 +751,7 @@ struct ubifs_branch {
>   	__le32 lnum;
>   	__le32 offs;
>   	__le32 len;
> +	__le64 crypto_lookup;
>   	__u8 key[];
>   } __packed;

Could you make a separate patch which adds new on-flash format and make
sure that new ubifs binaries can mount the old formats and work with
them. And that old ubifs binaries gracefully reject the new format.

-- 
Best Regards,
Artem Bityutskiy

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