Re: [PATCH] Simplify node/zone field in page->flags

["Matthew Dobson" <colpatch@us.ibm.com>]

Jesse Barnes wrote:
> On Mon, Jan 05, 2004 at 01:22:57PM -0800, Matthew Dobson wrote:
> 
>>Jesse had acked the patch in an earlier itteration.  The only thing 
>>that's changed is some line offsets whilst porting the patch forward.
>>
>>Jesse (or anyone else?), any objections to this patch as a superset of 
>>yours?
> 
> 
> No objections here.  Of course, you'll have to rediff against the
> current tree since that stuff has been merged for awhile now.  On a
> somewhat related note, Martin mentioned that he'd like to get rid of
> memblks.  I'm all for that too; they just seem to get in the way.
> 
> Jesse

Here's an updated version against 2.6.1-rc1.  Small comment fix (there 
are actually up to (MAX_NUMNODES * MAX_NR_ZONES) possible zones total, 
not log2(MAX_NUMNODES * MAX_NR_ZONES) as your comment stated.  That is 
the number of bits necessary to index every possible zone.

After this goes in, we (I) can convert a number of places that are doing 
several pointer dereferences/arithmetic and other things to determine 
which node/zone a page belongs to simply calling 
page_nodenum()/page_zonenum().

Cheers!

-Matt