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 <[email protected]> Acked-by: Kirill A. Shutemov <[email protected]> Acked-by: Cyrill Gorcunov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
jledet · Jan 15, 2016 · 0e41e27 · 0e41e27
1 parent bb5b858
commit 0e41e27
Showing 1 changed file with 0 additions and 3 deletions.
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
@@ -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