* [PATCH v13 4/8] powerpc: add pmd_[dirty|mkclean] for THP
[not found] <1405666386-15095-1-git-send-email-minchan@kernel.org>
@ 2014-07-18 6:53 ` Minchan Kim
2014-08-04 10:50 ` Aneesh Kumar K.V
0 siblings, 1 reply; 2+ messages in thread
From: Minchan Kim @ 2014-07-18 6:53 UTC (permalink / raw)
To: Andrew Morton
Cc: Jason Evans, Rik van Riel, Minchan Kim, Aneesh Kumar K.V,
Linux API, Hugh Dickins, linux-kernel, linux-mm, Zhang Yanfei,
Michael Kerrisk, KOSAKI Motohiro, Johannes Weiner,
Kirill A. Shutemov, linuxppc-dev, Paul Mackerras, Mel Gorman
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.
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Minchan Kim <minchan@kernel.org>
---
arch/powerpc/include/asm/pgtable-ppc64.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/include/asm/pgtable-ppc64.h b/arch/powerpc/include/asm/pgtable-ppc64.h
index eb9261024f51..c9a4bbe8e179 100644
--- a/arch/powerpc/include/asm/pgtable-ppc64.h
+++ b/arch/powerpc/include/asm/pgtable-ppc64.h
@@ -468,9 +468,11 @@ static inline pte_t *pmdp_ptep(pmd_t *pmd)
#define pmd_pfn(pmd) pte_pfn(pmd_pte(pmd))
#define pmd_young(pmd) pte_young(pmd_pte(pmd))
+#define pmd_dirty(pmd) pte_dirty(pmd_pte(pmd))
#define pmd_mkold(pmd) pte_pmd(pte_mkold(pmd_pte(pmd)))
#define pmd_wrprotect(pmd) pte_pmd(pte_wrprotect(pmd_pte(pmd)))
#define pmd_mkdirty(pmd) pte_pmd(pte_mkdirty(pmd_pte(pmd)))
+#define pmd_mkclean(pmd) pte_pmd(pte_mkclean(pmd_pte(pmd)))
#define pmd_mkyoung(pmd) pte_pmd(pte_mkyoung(pmd_pte(pmd)))
#define pmd_mkwrite(pmd) pte_pmd(pte_mkwrite(pmd_pte(pmd)))
--
2.0.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH v13 4/8] powerpc: add pmd_[dirty|mkclean] for THP
2014-07-18 6:53 ` [PATCH v13 4/8] powerpc: add pmd_[dirty|mkclean] for THP Minchan Kim
@ 2014-08-04 10:50 ` Aneesh Kumar K.V
0 siblings, 0 replies; 2+ messages in thread
From: Aneesh Kumar K.V @ 2014-08-04 10:50 UTC (permalink / raw)
To: Minchan Kim, Andrew Morton
Cc: Jason Evans, Rik van Riel, Minchan Kim, Linux API, Hugh Dickins,
linux-kernel, linux-mm, Zhang Yanfei, Michael Kerrisk,
KOSAKI Motohiro, Johannes Weiner, Kirill A. Shutemov,
linuxppc-dev, Paul Mackerras, Mel Gorman
Minchan Kim <minchan@kernel.org> writes:
> 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.
>
> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Cc: Paul Mackerras <paulus@samba.org>
> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
> Cc: linuxppc-dev@lists.ozlabs.org
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
> Signed-off-by: Minchan Kim <minchan@kernel.org>
> ---
> arch/powerpc/include/asm/pgtable-ppc64.h | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/arch/powerpc/include/asm/pgtable-ppc64.h b/arch/powerpc/include/asm/pgtable-ppc64.h
> index eb9261024f51..c9a4bbe8e179 100644
> --- a/arch/powerpc/include/asm/pgtable-ppc64.h
> +++ b/arch/powerpc/include/asm/pgtable-ppc64.h
> @@ -468,9 +468,11 @@ static inline pte_t *pmdp_ptep(pmd_t *pmd)
>
> #define pmd_pfn(pmd) pte_pfn(pmd_pte(pmd))
> #define pmd_young(pmd) pte_young(pmd_pte(pmd))
> +#define pmd_dirty(pmd) pte_dirty(pmd_pte(pmd))
> #define pmd_mkold(pmd) pte_pmd(pte_mkold(pmd_pte(pmd)))
> #define pmd_wrprotect(pmd) pte_pmd(pte_wrprotect(pmd_pte(pmd)))
> #define pmd_mkdirty(pmd) pte_pmd(pte_mkdirty(pmd_pte(pmd)))
> +#define pmd_mkclean(pmd) pte_pmd(pte_mkclean(pmd_pte(pmd)))
> #define pmd_mkyoung(pmd) pte_pmd(pte_mkyoung(pmd_pte(pmd)))
> #define pmd_mkwrite(pmd) pte_pmd(pte_mkwrite(pmd_pte(pmd)))
>
> --
> 2.0.0
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2014-07-18 6:53 ` [PATCH v13 4/8] powerpc: add pmd_[dirty|mkclean] for THP Minchan Kim
2014-08-04 10:50 ` Aneesh Kumar K.V
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