From f55e1014f9e567d830eb3a7f57d879a34872af4b Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 29 Nov 2017 09:01:01 -0800 Subject: Revert "mm, thp: Do not make pmd/pud dirty without a reason" This reverts commit 152e93af3cfe2d29d8136cc0a02a8612507136ee. It was a nice cleanup in theory, but as Nicolai Stange points out, we do need to make the page dirty for the copy-on-write case even when we didn't end up making it writable, since the dirty bit is what we use to check that we've gone through a COW cycle. Reported-by: Michal Hocko Acked-by: Kirill A. Shutemov Signed-off-by: Linus Torvalds --- mm/internal.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'mm/internal.h') diff --git a/mm/internal.h b/mm/internal.h index b35cdebda0ce..e6bd35182dae 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -328,8 +328,7 @@ static inline void mlock_migrate_page(struct page *newpage, struct page *page) } } -extern pmd_t maybe_pmd_mkwrite(pmd_t pmd, struct vm_area_struct *vma, - bool dirty); +extern pmd_t maybe_pmd_mkwrite(pmd_t pmd, struct vm_area_struct *vma); /* * At what user virtual address is page expected in @vma? -- cgit v1.2.3