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|---|---|
| From | Minchan Kim <minchan@kernel.org> |
| Newsgroups | linux.kernel |
| Subject | [PATCH v4 11/16] arm64: add pmd_mkclean for THP |
| Date | Fri, 20 Nov 2015 09:10:02 +0100 |
| Message-ID | <qwOVA-4AF-11@gated-at.bofh.it> (permalink) |
| References | <qwOVA-4AF-7@gated-at.bofh.it> |
| X-Original-To | Andrew Morton <akpm@linux-foundation.org> |
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| X-Original-Mailfrom | minchan@kernel.org |
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| X-Original-Mailfrom | minchan@kernel.org |
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| Lines | 30 |
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| X-Original-Cc | linux-kernel@vger.kernel.org, linux-mm@kvack.org, Michael Kerrisk <mtk.manpages@gmail.com>, linux-api@vger.kernel.org, Hugh Dickins <hughd@google.com>, Johannes Weiner <hannes@cmpxchg.org>, Rik van Riel <riel@redhat.com>, Mel Gorman <mgorman@suse.de>, KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>, Jason Evans <je@fb.com>, Daniel Micay <danielmicay@gmail.com>, "Kirill A. Shutemov" <kirill@shutemov.name>, Shaohua Li <shli@kernel.org>, Michal Hocko <mhocko@suse.cz>, yalin.wang2010@gmail.com, Andy Lutomirski <luto@amacapital.net>, Minchan Kim <minchan@kernel.org> |
| X-Original-Date | Fri, 20 Nov 2015 17:02:43 +0900 |
| X-Original-Message-ID | <1448006568-16031-12-git-send-email-minchan@kernel.org> |
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| Xref | csiph.com linux.kernel:1273775 |
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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_mkclean for THP page MADV_FREE support. Signed-off-by: Minchan Kim <minchan@kernel.org> --- arch/arm64/include/asm/pgtable.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 26b066690593..a945263addd4 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -325,6 +325,7 @@ void pmdp_splitting_flush(struct vm_area_struct *vma, unsigned long address, #define pmd_mksplitting(pmd) pte_pmd(pte_mkspecial(pmd_pte(pmd))) #define pmd_mkold(pmd) pte_pmd(pte_mkold(pmd_pte(pmd))) #define pmd_mkwrite(pmd) pte_pmd(pte_mkwrite(pmd_pte(pmd))) +#define pmd_mkclean(pmd) pte_pmd(pte_mkclean(pmd_pte(pmd))) #define pmd_mkdirty(pmd) pte_pmd(pte_mkdirty(pmd_pte(pmd))) #define pmd_mkyoung(pmd) pte_pmd(pte_mkyoung(pmd_pte(pmd))) #define pmd_mknotpresent(pmd) (__pmd(pmd_val(pmd) & ~PMD_TYPE_MASK)) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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[PATCH v4 11/16] arm64: add pmd_mkclean for THP Minchan Kim <minchan@kernel.org> - 2015-11-20 09:10 +0100
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