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Date: Sun, 4 Sep 2011 18:54:28 +0200
Subject: Re: [PATCH v1 00/16] ext4: Add metadata checksumming
From: "Andi Kleen" <andi@firstfloor.org>
To: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: djwong@us.ibm.com, "Greg Freemyer" <greg.freemyer@gmail.com>,
        "Andreas Dilger" <adilger.kernel@dilger.ca>,
        "Theodore Tso" <tytso@mit.edu>,
        "Sunil Mushran" <sunil.mushran@oracle.com>,
        "Amir Goldstein" <amir73il@gmail.com>,
        "linux-kernel" <linux-kernel@vger.kernel.org>,
        "Andi Kleen" <andi@firstfloor.org>, "Mingming Cao" <cmm@us.ibm.com>,
        "Joel Becker" <jlbec@evilplan.org>,
        "linux-fsdevel" <linux-fsdevel@vger.kernel.org>,
        linux-ext4@vger.kernel.org, "Coly Li" <colyli@gmail.com>
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> On Westmere and beyond it is possible to accelerate generic CRC
> calculation using the PCLMULQDQ operation. There are many of our CRC

Faster than the lookup table? That's hard to believe.

-Andi