Re: [PATCH] RCU: Reduce size of rcu_head 1 of 2

From: Dipankar Sarma (dipankar@in.ibm.com)
Date: Thu Jul 31 2003 - 16:31:03 EST


On Thu, Jul 31, 2003 at 01:49:54PM -0700, Andrew Morton wrote:
> Dipankar Sarma <dipankar@in.ibm.com> wrote:
> >
> > I have merged Rusty's original patch for reducing the size of
> > rcu_heads by splitting the two main changes into two patches.
>
> There are probably a lot of data structures in which we could save 4 (or 8)
> bytes by converting things from doubly linked to singly linked.
>
> And that's good, but given that at this time we are concentrating 100% on
> stabilising 2.6 (aren't we?) I'll be letting these patches slide, thanks.

The linked-list change is internal enough for a future backport from
2.7. The only concern here is the change in call_rcu() API. What would
be a good way to manage that ?

Thanks
Dipankar
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