From 45c682a68a87251d9a01383ce076ab21ee09812e Mon Sep 17 00:00:00 2001
From: Ken Chen <kenchen@google.com>
Date: Wed, 14 Nov 2007 16:59:44 -0800
Subject: hugetlb: fix i_blocks accounting

For administrative purpose, we want to query actual block usage for
hugetlbfs file via fstat.  Currently, hugetlbfs always return 0.  Fix that
up since kernel already has all the information to track it properly.

Signed-off-by: Ken Chen <kenchen@google.com>
Acked-by: Adam Litke <agl@us.ibm.com>
Cc: Badari Pulavarty <pbadari@us.ibm.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 include/linux/hugetlb.h | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'include')

diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 8104e5af75ab..24968790bc3e 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -168,6 +168,8 @@ struct file *hugetlb_file_setup(const char *name, size_t);
 int hugetlb_get_quota(struct address_space *mapping, long delta);
 void hugetlb_put_quota(struct address_space *mapping, long delta);
 
+#define BLOCKS_PER_HUGEPAGE	(HPAGE_SIZE / 512)
+
 static inline int is_file_hugepages(struct file *file)
 {
 	if (file->f_op == &hugetlbfs_file_operations)
-- 
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