linux-kernel - [patch] vmemmap: warn about page

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Message-ID: <alpine.DEB.1.10.0810280312390.16242@chino.kir.corp.google.com>
Date:	Tue, 28 Oct 2008 09:05:46 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
cc:	Christoph Lameter <cl@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: [patch] vmemmap: warn about page_structs with remote distance

It's insufficient to simply compare node ids when warning about offnode
page_structs since it's possible to still have local affinity.

Cc: Christoph Lameter <cl@...ux-foundation.org>
Signed-off-by: David Rientjes <rientjes@...gle.com>
---
 mm/sparse-vmemmap.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/mm/sparse-vmemmap.c b/mm/sparse-vmemmap.c
--- a/mm/sparse-vmemmap.c
+++ b/mm/sparse-vmemmap.c
@@ -64,7 +64,7 @@ void __meminit vmemmap_verify(pte_t *pte, int node,
 	unsigned long pfn = pte_pfn(*pte);
 	int actual_node = early_pfn_to_nid(pfn);
 
-	if (actual_node != node)
+	if (node_distance(actual_node, node) > LOCAL_DISTANCE)
 		printk(KERN_WARNING "[%lx-%lx] potential offnode "
 			"page_structs\n", start, end - 1);
 }
--
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