linux-ext4 - Re: [PATCH] Ext4: Uninitialized Block Groups

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Message-ID: <20070919063058.GG32520@schatzie.adilger.int>
Date:	Wed, 19 Sep 2007 00:30:58 -0600
From:	Andreas Dilger <adilger@...sterfs.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Avantika Mathur <mathur@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org, linux-ext4@...r.kernel.org,
	cmm@...ibm.com
Subject: Re: [PATCH] Ext4: Uninitialized Block Groups

On Sep 18, 2007  20:03 -0700, Andrew Morton wrote:
> On Tue, 18 Sep 2007 17:25:31 -0700 Avantika Mathur <mathur@...ux.vnet.ibm.com> wrote:
> 
> > +#if !defined(CONFIG_CRC16)
> > +/** CRC table for the CRC-16. The poly is 0x8005 (x16 + x15 + x2 + 1) */
> > +__u16 const crc16_table[256] = {
> > +	0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241,
> 
> That's rather sad.  A plain old "depends on" would be better.

My bad.  We wrote this patch and it had to run on older kernels that might
not even have lib/crc16.c (it was added around 2.6.15 or so, so e.g. RHEL4
doesn't have it).  I forgot to remove it from the upstream submission,
and since it didn't cause problems nobody else complained...

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

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