Re: [PATCH] slub: fix slab_pad_check()

From: Christoph Lameter
Date: Tue Sep 08 2009 - 15:58:21 EST


On Fri, 4 Sep 2009, Paul E. McKenney wrote:

> We have gotten along fine with only SLAB_DESTROY_BY_RCU for almost
> five years, so I think we are plenty fine with what we have. So, as
> you say, "as the need arises".

These were the glory years where SLAB_DESTROY_BY_RCU was only used for
anonymous vmas. Now Eric has picked it up for the net subsystem. You may
see the RCU use proliferate.

The kmem_cache_destroy rcu barriers did not matter until
SLAB_DESTROY_BY_RCU spread.


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