linux-kernel - Re: [PATCH] UBIFS: add ksa_pos to replay buds, read when replaying

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Message-ID: <1337539215.1745.11.camel@koala>
Date:	Sun, 20 May 2012 21:40:15 +0300
From:	Artem Bityutskiy <dedekind1@...il.com>
To:	Joel Reardon <joel@...mbassador.com>
Cc:	linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] UBIFS: add ksa_pos to replay buds, read when replaying

On Sun, 2012-05-20 at 14:28 +0200, Joel Reardon wrote:
> This patch read the ksa_pos from data nodes to the replay buds when performing
> a replay after unclean commit. This is critical for the correctness of the key
> state map, because the keys that are assigned to uncommited data nodes will be
> considered "unused" after mounting but will be considered "used" after
> replaying. The ksa_pos values stored in the replay bud are passed to the TNC
> using ubifs_tnc_add.
> 
> This was tested by assigning distinct ksa_pos values and disabling commiting.
> Data was written and then the drive was remounted. The ksa_pos values were
> read from the journal and outputted while replaying. When the file was later
> read, it was confirmed that the ksa_pos values were already loaded into the
> TNC.
> 
> Signed-off-by: Joel Reardon <reardonj@....ethz.ch>

Pushed to the "joel" branch as well.

-- 
Best Regards,
Artem Bityutskiy

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