Re: [RFC][PATCH] mm/slub.c: Allow poisoning to use the fast path

From: Christopher Lameter
Date: Mon Aug 07 2017 - 10:37:55 EST

On Fri, 4 Aug 2017, Laura Abbott wrote:

> All slub debug features currently disable the fast path completely.
> Some features such as consistency checks require this to allow taking of
> locks. Poisoning and red zoning don't require this and can safely use
> the per-cpu fast path. Introduce a Kconfig to continue to use the fast
> path when 'fast' debugging options are enabled. The code will
> automatically revert to always using the slow path when 'slow' options
> are enabled.

Ok I see that the objects are initialized with poisoning and redzoning but
I do not see that there is fastpath code to actually check the values
before the object is reinitialized. Is that intentional or am
I missing something?