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-rw-r--r--mm/page_alloc.c22
1 files changed, 19 insertions, 3 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 8d9a1eb9fbba..75133e1dc4b1 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2168,6 +2168,10 @@ unsigned long __init __absent_pages_in_range(int nid,
if (i == -1)
return 0;
+ /* Account for ranges before physical memory on this node */
+ if (early_node_map[i].start_pfn > range_start_pfn)
+ hole_pages = early_node_map[i].start_pfn - range_start_pfn;
+
prev_end_pfn = early_node_map[i].start_pfn;
/* Find all holes for the zone within the node */
@@ -2189,6 +2193,11 @@ unsigned long __init __absent_pages_in_range(int nid,
prev_end_pfn = early_node_map[i].end_pfn;
}
+ /* Account for ranges past physical memory on this node */
+ if (range_end_pfn > prev_end_pfn)
+ hole_pages = range_end_pfn -
+ max(range_start_pfn, prev_end_pfn);
+
return hole_pages;
}
@@ -2210,9 +2219,16 @@ unsigned long __init zone_absent_pages_in_node(int nid,
unsigned long zone_type,
unsigned long *ignored)
{
- return __absent_pages_in_range(nid,
- arch_zone_lowest_possible_pfn[zone_type],
- arch_zone_highest_possible_pfn[zone_type]);
+ unsigned long node_start_pfn, node_end_pfn;
+ unsigned long zone_start_pfn, zone_end_pfn;
+
+ get_pfn_range_for_nid(nid, &node_start_pfn, &node_end_pfn);
+ zone_start_pfn = max(arch_zone_lowest_possible_pfn[zone_type],
+ node_start_pfn);
+ zone_end_pfn = min(arch_zone_highest_possible_pfn[zone_type],
+ node_end_pfn);
+
+ return __absent_pages_in_range(nid, zone_start_pfn, zone_end_pfn);
}
/* Return the zone index a PFN is in */