Re: [PATCH] slub: fix slab_pad_check()

[Christoph Lameter]

On Tue, 8 Sep 2009, Paul E. McKenney wrote:

> > No direct request but I have seen the network developers discover these
> > features and their caching benefits over the last year. It is likely that
> > they will try to push it into more components of the net subsystem.
>
> So if they push it far enough, they might well decide that they need
> a SLAB_DESTROY_BY_RCU_BH, for example.  Looks like seven bits left,
> so unless I am missing something, should not be a huge problem should
> this need arise.

I'd rather have the call_rcu in the slabs replaced by a function that
can be set by the user. Then we can remove all rcu barriers from the code
and the slabs could be used with any type of rcu functionality.

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