linux-kernel - [RFC PATCH v2 23/25] mm/page_alloc: make pr_err() in page_outside_zone

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Date:	Thu, 11 Apr 2013 18:13:55 -0700
From:	Cody P Schafer <cody@...ux.vnet.ibm.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Mel Gorman <mgorman@...e.de>, Linux MM <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Cody P Schafer <cody@...ux.vnet.ibm.com>,
	Simon Jeons <simon.jeons@...il.com>
Subject: [RFC PATCH v2 23/25] mm/page_alloc: make pr_err() in page_outside_zone_boundaries() more useful

Signed-off-by: Cody P Schafer <cody@...ux.vnet.ibm.com>
---
 mm/page_alloc.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index a54baa9..20304cb 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -253,8 +253,11 @@ static int page_outside_zone_boundaries(struct zone *zone, struct page *page)
 	} while (zone_span_seqretry(zone, seq));
 
 	if (ret)
-		pr_err("page %lu outside zone [ %lu - %lu ]\n",
-			pfn, start_pfn, start_pfn + sp);
+		pr_err("page with pfn %05lx outside zone %s with pfn range {%05lx-%05lx} in node %d with pfn range {%05lx-%05lx}\n",
+			pfn, zone->name, start_pfn, start_pfn + sp,
+			zone->zone_pgdat->node_id,
+			zone->zone_pgdat->node_start_pfn,
+			pgdat_end_pfn(zone->zone_pgdat));
 
 	return ret;
 }
-- 
1.8.2.1

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