Commit 0e41e277 authored Jan 14, 2016 by Oleg Nesterov Committed by Linus Torvalds Jan 14, 2016

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



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>

parent bb5b8589

fs/proc/task_mmu.c

+0 −3

Original line number	Diff line number	Diff line
		@@ -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

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