Re: [PATCH] crc32 improvements for 2.5 [RESEND]

From: Joakim Tjernlund (
Date: Thu Feb 13 2003 - 16:45:34 EST

From: "Andrew Morton" <>
> Joakim Tjernlund <> wrote:
> >
> > I did the optimizations in the crc32 patch Brian Murphy submitted a while ago.
> > Now I have cleaned it up a little and made some more optimizations.
> I added this to -mm, but I don't know how to test it ;)
> What testing have you performed? And have you any benchmark results?

I have tested this extensivly using JFFS2 on PPC. I belive David Woodhouse
has done the same on X86.

I don't have any benchmarks, I used the JFFS2 mounting process which
crc32 checks all data and metadata in the FS and timed that.

There are some ethernet drivers that uses crc32 as well.

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