Re: [PATCH] kmemcheck: make bitfield annotations truly no-ops whendisabled
From: Pekka Enberg
Date: Wed Dec 09 2009 - 08:31:44 EST
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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