[PATCH 4.4 02/45] thp: fix MADV_DONTNEED vs clear soft dirty race

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Kirill A. Shutemov commit 5b7abeae3af8c08c577e599dd0578b9e3ee6687b upstream. Yet another instance of the same race. Fix is identical to change_huge_pmd().

[PATCH 4.4 02/45] thp: fix MADV_DONTNEED vs clear soft dirty race

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Kirill A. Shutemov commit 5b7abeae3af8c08c577e599dd0578b9e3ee6687b upstream. Yet another instance of the same race. Fix is identical to change_huge_pmd(). See "thp: fix MADV_DONTNEED vs.