linux-kernel - Re: [PATCH 2/2] ext2: Avoid rec_len overflow with 64KB block size

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Message-ID: <20071004224044.GH5628@schatzie.adilger.int>
Date:	Thu, 4 Oct 2007 16:40:44 -0600
From:	Andreas Dilger <adilger@...sterfs.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	cmm@...ibm.com, linux-ext4@...r.kernel.org,
	linux-kernel@...r.kernel.org, sho@...s.nec.co.jp, jack@...e.cz,
	clameter@....com
Subject: Re: [PATCH 2/2] ext2: Avoid rec_len overflow with 64KB block size

On Oct 04, 2007  13:12 -0700, Andrew Morton wrote:
> On Mon, 01 Oct 2007 17:35:46 -0700
> > ext2: Avoid rec_len overflow with 64KB block size
> > 
> > into 16 bits we have for entry lenght. So we store 0xffff instead and
> > convert value when read from / written to disk.
> 
> This patch clashes in non-trivial ways with
> ext2-convert-to-new-aops-fix.patch and perhaps other things which are
> already queued for 2.6.24 inclusion, so I'll need to ask for an updated
> patch, please.

If the rel_len overflow patch isn't going to make it, then we also need
to revert the EXT*_MAX_BLOCK_SIZE change to 65536.  It would be possible
to allow this to be up to 32768 w/o the rec_len overflow fix however.

Yes, this does imply that those patches were in the wrong order in the
patch series, and I apologize for that, even if it isn't my fault.

Cheers, Andreas
--
Andreas Dilger
Principal Software Engineer
Cluster File Systems, Inc.

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