[PATCH 1/2] zone init check and report unaligned zone boundaries fix

[Andy Whitcroft]

zone init check and report unaligned zone boundaries fix v2

We are reporting bad boundaries for the first zone which is allowed
to be missaligned because nodes are not allowed to be missaligned,
and zones which have zero size.  Cull them.

Signed-off-by: Andy Whitcroft <apw@xxxxxxxxxxxx>
---
 page_alloc.c |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)
diff -upN reference/mm/page_alloc.c current/mm/page_alloc.c
--- reference/mm/page_alloc.c
+++ current/mm/page_alloc.c
@@ -2223,10 +2223,6 @@ static void __meminit free_area_init_cor
 		struct zone *zone = pgdat->node_zones + j;
 		unsigned long size, realsize;
 
-		if (zone_boundary_align_pfn(zone_start_pfn) != zone_start_pfn)
-			printk(KERN_CRIT "node %d zone %s missaligned "
-					"start pfn\n", nid, zone_names[j]);
-
 		realsize = size = zones_size[j];
 		if (zholes_size)
 			realsize -= zholes_size[j];
@@ -2235,6 +2231,11 @@ static void __meminit free_area_init_cor
 			nr_kernel_pages += realsize;
 		nr_all_pages += realsize;
 
+		if (zone_boundary_align_pfn(zone_start_pfn) !=
+					zone_start_pfn && j != 0 && size != 0)
+			printk(KERN_CRIT "node %d zone %s missaligned "
+					"start pfn\n", nid, zone_names[j]);
+
 		zone->spanned_pages = size;
 		zone->present_pages = realsize;
 		zone->name = zone_names[j];
-
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