Re: single bit flip detector.

From: Dave Jones
Date: Fri Aug 04 2006 - 18:04:39 EST

On Fri, Aug 04, 2006 at 02:19:55PM -0700, Andrew Morton wrote:
> On Tue, 1 Aug 2006 20:16:26 -0400
> Dave Jones <davej@xxxxxxxxxx> wrote:
> > In case where we detect a single bit has been flipped, we spew
> > the usual slab corruption message, which users instantly think
> > is a kernel bug. In a lot of cases, single bit errors are
> > down to bad memory, or other hardware failure.
> >
> > This patch adds an extra line to the slab debug messages
> > in those cases, in the hope that users will try memtest before
> > they report a bug.
> Well boy, this has to be the most-reviewed patch ever. You'd think that
> I'd apply it with great confidence and warm fuzzies.

I should stick to one-liner fixes.

> - one decl per line is more patching-friendly and a bit more idiomatic.
> - make `bad_count' an int: a uchar might overflow
> - Put a blank line between decls and code
> - rename `total' to `error', remove `errors'.
> - there's no need to sum up the errors.
> - don't need to check for non-zero `errors': we know it is != POISON_FREE.
> - make it look non-crapful in an 80-col window.
> - add missing spaces in arithmetic

With this much iteration, I do have one question..
Does it still work ? :-)


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