* [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 ^ permalink raw reply [flat|nested] 2+ messages in thread
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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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