Re: [PATCH] kmemcheck: make bitfield annotations truly no-ops whendisabled

[Pekka Enberg]

Andrew Morton kirjoitti:
> On Sun,  6 Dec 2009 18:42:13 +0100
> Vegard Nossum <vegard.nossum@xxxxxxxxx> wrote:
>
> > It turns out that even zero-sized struct members (int foo[0];) will affect
> > the struct layout, causing us in particular to lose 4 bytes in struct sock.
> >
> > This patch fixes the regression in CONFIG_KMEMCHECK=n case.
>
> Which kernel version is the regression relative to?

AFAICT, it dates back to 2.6.31 when kmemcheck was introduced in 
mainline. Vegard?

> Should we backport this into 2.6.32.x?

I guess so. Eric, how bad is the regression?

			Pekka
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