[PATCH 1/2] memory page_alloc zonelist caching speedup aligncache revert

[Paul Jackson <pj@sgi.com>]

Revert the patch:
  memory page_alloc zonelist caching speedup aligncache

Thanks to a suggestion by Rohit Seth, there's a better
way to do this, just by reordering some struct members.

Signed-off-by: Paul Jackson <pj@sgi.com>

---

Andrew - I'm guessing that you will squash this patch together
         with the patch it reverts:
                memory page_alloc zonelist caching speedup aligncache
         and then throw the resulting empty patch out.

         Or just throw the reverted patch out.  Whatever.

					-pj

 include/linux/mmzone.h |    3 +--
 1 files changed, 1 insertion(+), 2 deletions(-)

--- 2.6.19-rc2-mm1.orig/include/linux/mmzone.h	2006-10-19 02:45:44.000000000 -0700
+++ 2.6.19-rc2-mm1/include/linux/mmzone.h	2006-10-19 02:45:49.000000000 -0700
@@ -396,8 +396,7 @@ struct zonelist {
 	struct zonelist_cache *zlcache_ptr;		     // NULL or &zlcache
 	struct zone *zones[MAX_ZONES_PER_ZONELIST + 1];      // NULL delimited
 #ifdef CONFIG_NUMA
-	/* Keep written zonelist_cache off read-only zones[] cache lines */
-	struct zonelist_cache zlcache ____cacheline_aligned; // optional ...
+	struct zonelist_cache zlcache;			     // optional ...
 #endif
 };
 

-- 
                  I won't rest till it's the best ...
                  Programmer, Linux Scalability
                  Paul Jackson <pj@sgi.com> 1.925.600.0401

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