Messages in this thread | | | Date | Tue, 4 Sep 2018 11:01:16 +0300 | From | "Kirill A. Shutemov" <> | Subject | Re: [PATCH] mm: hugepage: mark splitted page dirty when needed |
| |
On Tue, Sep 04, 2018 at 03:55:10PM +0800, Peter Xu wrote: > When splitting a huge page, we should set all small pages as dirty if > the original huge page has the dirty bit set before. Otherwise we'll > lose the original dirty bit.
We don't lose it. It got transfered to struct page flag:
if (pmd_dirty(old_pmd)) SetPageDirty(page);
-- Kirill A. Shutemov
| |