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mm: /proc/pid/clear_refs: no need to clear VM_SOFTDIRTY in clear_soft_dirty_pmd()

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clear_soft_dirty_pmd() is called by clear_refs_write(CLEAR_REFS_SOFT_DIRTY),
VM_SOFTDIRTY was already cleared before walk_page_range().

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Oleg Nesterov 2016-01-14 15:21:46 -08:00 committed by Linus Torvalds
parent bb5b858976
commit 0e41e27797
1 changed files with 0 additions and 3 deletions
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3
fs/proc/task_mmu.c
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@ -881,9 +881,6 @@ static inline void clear_soft_dirty_pmd(struct vm_area_struct *vma,
pmd = pmd_wrprotect(pmd);
pmd = pmd_clear_soft_dirty(pmd);
if (vma->vm_flags & VM_SOFTDIRTY)
vma->vm_flags &= ~VM_SOFTDIRTY;
set_pmd_at(vma->vm_mm, addr, pmdp, pmd);
}
#else