[PATCH 5/6] mm/hugetlb: remove redundant hugetlb_prefault

[Wanpeng Li]

hugetlb_prefault is not used by any users. This patch remove redundant 
hugetlb_prefault.

Signed-off-by: Wanpeng Li <liwanp@xxxxxxxxxxxxxxxxxx>
---
 include/linux/hugetlb.h |    2 --
 1 file changed, 2 deletions(-)

diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index b7e4106..813b265 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -57,7 +57,6 @@ void __unmap_hugepage_range_final(struct mmu_gather *tlb,
 void __unmap_hugepage_range(struct mmu_gather *tlb, struct vm_area_struct *vma,
 				unsigned long start, unsigned long end,
 				struct page *ref_page);
-int hugetlb_prefault(struct address_space *, struct vm_area_struct *);
 void hugetlb_report_meminfo(struct seq_file *);
 int hugetlb_report_node_meminfo(int, char *);
 void hugetlb_show_meminfo(void);
@@ -113,7 +112,6 @@ static inline unsigned long hugetlb_total_pages(void)
 #define follow_hugetlb_page(m,v,p,vs,a,b,i,w)	({ BUG(); 0; })
 #define follow_huge_addr(mm, addr, write)	ERR_PTR(-EINVAL)
 #define copy_hugetlb_page_range(src, dst, vma)	({ BUG(); 0; })
-#define hugetlb_prefault(mapping, vma)		({ BUG(); 0; })
 static inline void hugetlb_report_meminfo(struct seq_file *m)
 {
 }
-- 
1.7.10.4

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