commit 1a5cb81465b66b74bf3d6ad36e5382238de6a132
author Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Mon May 24 14:32:12 2010 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> Tue May 25 08:06:58 2010 -0700
tree 28494edfea96752f57c88601d80819759085fade
parent e48293fd75b3aa67f43ad6e3d2ff397caa55d58b

pagemap: add #ifdefs CONFIG_HUGETLB_PAGE on code walking hugetlb vma

If !CONFIG_HUGETLB_PAGE, pagemap_hugetlb_range() is never called.  So put
it (and its calling function) into #ifdef block.

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/proc/task_mmu.c

diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 47f5b14..aea1d3f 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -634,6 +634,7 @@
 	return err;
 }
 
+#ifdef CONFIG_HUGETLB_PAGE
 static u64 huge_pte_to_pagemap_entry(pte_t pte, int offset)
 {
 	u64 pme = 0;
@@ -664,6 +665,7 @@
 
 	return err;
 }
+#endif /* HUGETLB_PAGE */
 
 /*
  * /proc/pid/pagemap - an array mapping virtual pages to pfns
@@ -733,7 +735,9 @@
 
 	pagemap_walk.pmd_entry = pagemap_pte_range;
 	pagemap_walk.pte_hole = pagemap_pte_hole;
+#ifdef CONFIG_HUGETLB_PAGE
 	pagemap_walk.hugetlb_entry = pagemap_hugetlb_range;
+#endif
 	pagemap_walk.mm = mm;
 	pagemap_walk.private = ±