Re: [1/3] Add __GFP_THISNODE to avoid fallback to other nodes and ignore cpuset/memory policy restrictions.

[Christoph Lameter <clameter@sgi.com>]

On Tue, 8 Aug 2006, Mel Gorman wrote:

> > From your set of patches, it's only used for page migration and the IA64 
> uncached allocator both of which are using alloc_pages_node() at the moment.
> Do you see a widespread need to avoid fallbacks in other areas?

These are the patches that are ready for mm. Read the other RFCs on 
linux-mm. There are patches for the slab etc.
 
> Also, I just noticed you didn't update GFP_LEVEL_MASK with your new flag. That
> may cause interesting failures in the future, particularly if you call into
> the slab allocator with the new flag.

Thanks! Fixup:

Index: linux-2.6.18-rc3-mm2/include/linux/gfp.h
===================================================================
--- linux-2.6.18-rc3-mm2.orig/include/linux/gfp.h	2006-08-08 09:20:41.727897528 -0700
+++ linux-2.6.18-rc3-mm2/include/linux/gfp.h	2006-08-08 10:50:37.604766523 -0700
@@ -54,7 +54,7 @@ struct vm_area_struct;
 #define GFP_LEVEL_MASK (__GFP_WAIT|__GFP_HIGH|__GFP_IO|__GFP_FS| \
 			__GFP_COLD|__GFP_NOWARN|__GFP_REPEAT| \
 			__GFP_NOFAIL|__GFP_NORETRY|__GFP_NO_GROW|__GFP_COMP| \
-			__GFP_NOMEMALLOC|__GFP_HARDWALL)
+			__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_THISNODE)
 
 /* This equals 0, but use constants in case they ever change */
 #define GFP_NOWAIT	(GFP_ATOMIC & ~__GFP_HIGH)
> 

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