[PATCH v4 4/8] mm: pass fault address to clear_huge_page()

[Kirill A. Shutemov]

From: "Kirill A. Shutemov" <kirill.shute...@linux.intel.com>

Signed-off-by: Kirill A. Shutemov <kirill.shute...@linux.intel.com>
---
 include/linux/mm.h |    2 +-
 mm/huge_memory.c   |    2 +-
 mm/hugetlb.c       |    3 ++-
 mm/memory.c        |    7 ++++---
 4 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 311be90..2858723 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1638,7 +1638,7 @@ extern void dump_page(struct page *page);
 
 #if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_HUGETLBFS)
 extern void clear_huge_page(struct page *page,
-                           unsigned long addr,
+                           unsigned long haddr, unsigned long fault_address,
                            unsigned int pages_per_huge_page);
 extern void copy_user_huge_page(struct page *dst, struct page *src,
                                unsigned long addr, struct vm_area_struct *vma,
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 6f0825b611..070bf89 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -644,7 +644,7 @@ static int __do_huge_pmd_anonymous_page(struct mm_struct 
*mm,
        if (unlikely(!pgtable))
                return VM_FAULT_OOM;
 
-       clear_huge_page(page, haddr, HPAGE_PMD_NR);
+       clear_huge_page(page, haddr, address, HPAGE_PMD_NR);
        __SetPageUptodate(page);
 
        spin_lock(&mm->page_table_lock);
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 3c86d3d..5182192 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2718,7 +2718,8 @@ retry:
                                ret = VM_FAULT_SIGBUS;
                        goto out;
                }
-               clear_huge_page(page, haddr, pages_per_huge_page(h));
+               clear_huge_page(page, haddr, fault_address,
+                               pages_per_huge_page(h));
                __SetPageUptodate(page);
 
                if (vma->vm_flags & VM_MAYSHARE) {
diff --git a/mm/memory.c b/mm/memory.c
index 5736170..dfc179b 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -3984,19 +3984,20 @@ static void clear_gigantic_page(struct page *page,
        }
 }
 void clear_huge_page(struct page *page,
-                    unsigned long addr, unsigned int pages_per_huge_page)
+                    unsigned long haddr, unsigned long fault_address,
+                    unsigned int pages_per_huge_page)
 {
        int i;
 
        if (unlikely(pages_per_huge_page > MAX_ORDER_NR_PAGES)) {
-               clear_gigantic_page(page, addr, pages_per_huge_page);
+               clear_gigantic_page(page, haddr, pages_per_huge_page);
                return;
        }
 
        might_sleep();
        for (i = 0; i < pages_per_huge_page; i++) {
                cond_resched();
-               clear_user_highpage(page + i, addr + i * PAGE_SIZE);
+               clear_user_highpage(page + i, haddr + i * PAGE_SIZE);
        }
 }
 
-- 
1.7.7.6

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