Re: [patch] mm: page allocator minor speedup

[Nick Piggin <npiggin@suse.de>]

On Mon, Aug 18, 2008 at 04:29:34PM -0700, Andrew Morton wrote:
> On Mon, 18 Aug 2008 14:29:57 +0200
> Nick Piggin <npiggin@suse.de> wrote:
> 
> > Now that we don't put a ZERO_PAGE in the pagetables any more, and the
> > "remove PageReserved from core mm" patch has had a long time to mature,
> > let's remove the page reserved logic from the allocator.
> > 
> > This saves several branches and about 100 bytes in some important paths.
> 
> This of course made a big mess against the page reclaim rewrite.  I
> think I fixed it up.
> 
> I could have merged it ahead, but then that would have made a big mess
> of the page reclaim rewrite.

Sure, thanks. It's not very important so it can wait on the page reclaim
rewrite.
 

> Testing and reviewing the page reclaim rewrite would be a useful
> place to spend time..

Yes it seems to have settled down a bit now. Fair few other things pretty
high on the list to look at too, but I will have to make time for this.

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