[PATCH 1/2] hugetlb: indicate surplus huge page counts in per-node meminfo

[Nishanth Aravamudan <nacc@us.ibm.com>]

Currently we show the surplus hugetlb pool state in /proc/meminfo, but
not in the per-node meminfo files, even though we track the information
on a per-node basis. Printing it there can help track down dynamic pool
bugs including the one in the follow-on patch.
    
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>

---
This would be nice to have this late in the 2.6.25 cycle, but should not
block the follow-on patch from getting merged.

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index ecaeedb..548a75d 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -719,9 +719,11 @@ int hugetlb_report_node_meminfo(int nid, char *buf)
 {
 	return sprintf(buf,
 		"Node %d HugePages_Total: %5u\n"
-		"Node %d HugePages_Free:  %5u\n",
+		"Node %d HugePages_Free:  %5u\n"
+		"Node %d HugePages_Surp:  %5u\n",
 		nid, nr_huge_pages_node[nid],
-		nid, free_huge_pages_node[nid]);
+		nid, free_huge_pages_node[nid],
+		nid, surplus_huge_pages_node[nid]);
 }
 
 #ifdef CONFIG_NUMA

-- 
Nishanth Aravamudan <nacc@us.ibm.com>
IBM Linux Technology Center

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