From 1757bbd9c5918a9c1a8757141763a23f2e446caa Mon Sep 17 00:00:00 2001
From: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Date: Wed, 11 Feb 2015 15:28:00 -0800
Subject: [PATCH] arch/powerpc/mm/subpage-prot.c: use walk->vma and
walk_page_vma()
We don't have to use mm_walk->private to pass vma to the callback function
because of mm_walk->vma. And walk_page_vma() is useful if we walk over a
single vma.
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Pavel Emelyanov <xemul@parallels.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
arch/powerpc/mm/subpage-prot.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/mm/subpage-prot.c b/arch/powerpc/mm/subpage-prot.c
index 6c0b1f5f8d2cc..fa9fb5b4c66cf 100644
--- a/arch/powerpc/mm/subpage-prot.c
+++ b/arch/powerpc/mm/subpage-prot.c
@@ -134,7 +134,7 @@ static void subpage_prot_clear(unsigned long addr, unsigned long len)
static int subpage_walk_pmd_entry(pmd_t *pmd, unsigned long addr,
unsigned long end, struct mm_walk *walk)
{
- struct vm_area_struct *vma = walk->private;
+ struct vm_area_struct *vma = walk->vma;
split_huge_page_pmd(vma, addr, pmd);
return 0;
}
@@ -163,9 +163,7 @@ static void subpage_mark_vma_nohuge(struct mm_struct *mm, unsigned long addr,
if (vma->vm_start >= (addr + len))
break;
vma->vm_flags |= VM_NOHUGEPAGE;
- subpage_proto_walk.private = vma;
- walk_page_range(vma->vm_start, vma->vm_end,
- &subpage_proto_walk);
+ walk_page_vma(vma, &subpage_proto_walk);
vma = vma->vm_next;
}
}
--
GitLab