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Groups > linux.kernel > #1267629
| From | Minchan Kim <minchan@kernel.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v3 08/17] x86: add pmd_[dirty|mkclean] for THP |
| Date | 2015-11-12 05:40 +0100 |
| Message-ID | <qtRPZ-49d-41@gated-at.bofh.it> (permalink) |
| References | <qtRPX-49d-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
MADV_FREE needs pmd_dirty and pmd_mkclean for detecting recent overwrite
of the contents since MADV_FREE syscall is called for THP page.
This patch adds pmd_dirty and pmd_mkclean for THP page MADV_FREE
support.
Signed-off-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
arch/x86/include/asm/pgtable.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index 867da5bbb4a3..b964d54300e1 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -267,6 +267,11 @@ static inline pmd_t pmd_mkold(pmd_t pmd)
return pmd_clear_flags(pmd, _PAGE_ACCESSED);
}
+static inline pmd_t pmd_mkclean(pmd_t pmd)
+{
+ return pmd_clear_flags(pmd, _PAGE_DIRTY);
+}
+
static inline pmd_t pmd_wrprotect(pmd_t pmd)
{
return pmd_clear_flags(pmd, _PAGE_RW);
--
1.9.1
--
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[PATCH v3 00/17] MADFV_FREE support Minchan Kim <minchan@kernel.org> - 2015-11-12 05:40 +0100
[PATCH v3 08/17] x86: add pmd_[dirty|mkclean] for THP Minchan Kim <minchan@kernel.org> - 2015-11-12 05:40 +0100
[PATCH v3 01/17] mm: support madvise(MADV_FREE) Minchan Kim <minchan@kernel.org> - 2015-11-12 05:40 +0100
Re: [PATCH v3 01/17] mm: support madvise(MADV_FREE) Andy Lutomirski <luto@amacapital.net> - 2015-11-12 06:00 +0100
Re: [PATCH v3 01/17] mm: support madvise(MADV_FREE) Daniel Micay <danielmicay@gmail.com> - 2015-11-12 06:30 +0100
Re: [PATCH v3 01/17] mm: support madvise(MADV_FREE) Minchan Kim <minchan@kernel.org> - 2015-11-13 07:20 +0100
Re: [PATCH v3 01/17] mm: support madvise(MADV_FREE) Daniel Micay <danielmicay@gmail.com> - 2015-11-13 07:20 +0100
Re: [PATCH v3 01/17] mm: support madvise(MADV_FREE) Minchan Kim <minchan@kernel.org> - 2015-11-13 07:40 +0100
Re: [PATCH v3 01/17] mm: support madvise(MADV_FREE) Daniel Micay <danielmicay@gmail.com> - 2015-11-13 07:50 +0100
Re: [PATCH v3 01/17] mm: support madvise(MADV_FREE) Minchan Kim <minchan@kernel.org> - 2015-11-13 08:10 +0100
Re: [PATCH v3 01/17] mm: support madvise(MADV_FREE) Daniel Micay <danielmicay@gmail.com> - 2015-11-13 09:20 +0100
Re: [PATCH v3 01/17] mm: support madvise(MADV_FREE) Andy Lutomirski <luto@amacapital.net> - 2015-11-13 20:50 +0100
Re: [PATCH v3 01/17] mm: support madvise(MADV_FREE) Minchan Kim <minchan@kernel.org> - 2015-11-16 03:20 +0100
Re: [PATCH v3 01/17] mm: support madvise(MADV_FREE) yalin wang <yalin.wang2010@gmail.com> - 2015-11-16 04:20 +0100
Re: [PATCH v3 01/17] mm: support madvise(MADV_FREE) "Kirill A. Shutemov" <kirill@shutemov.name> - 2015-11-12 12:30 +0100
Re: [PATCH v3 01/17] mm: support madvise(MADV_FREE) Minchan Kim <minchan@kernel.org> - 2015-11-13 07:20 +0100
[PATCH v3 11/17] arm: add pmd_mkclean for THP Minchan Kim <minchan@kernel.org> - 2015-11-12 05:40 +0100
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