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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-11-29 09:01:01 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-11-29 09:01:01 -0800 |
| commit | f55e1014f9e567d830eb3a7f57d879a34872af4b (patch) | |
| tree | 7d3b834a71f6fbaec70bb4a5700424be15e9e1d3 /mm/internal.h | |
| parent | 43570f0383d6d5879ae585e6c3cf027ba321546f (diff) | |
| download | op-kernel-dev-f55e1014f9e567d830eb3a7f57d879a34872af4b.zip op-kernel-dev-f55e1014f9e567d830eb3a7f57d879a34872af4b.tar.gz | |
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 <mhocko@kernel.org>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/internal.h')
| -rw-r--r-- | mm/internal.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/mm/internal.h b/mm/internal.h index b35cdeb..e6bd351 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? |
