From: Minchan Kim <minchan@kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>
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>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Mel Gorman <mgorman@suse.de>, Jason Evans <je@fb.com>,
zhangyanfei@cn.fujitsu.com,
"Kirill A. Shutemov" <kirill@shutemov.name>,
Minchan Kim <minchan@kernel.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
linuxppc-dev@lists.ozlabs.org,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Subject: [PATCH v16 4/7] powerpc: add pmd_[dirty|mkclean] for THP
Date: Mon, 1 Sep 2014 16:20:45 +0900 [thread overview]
Message-ID: <1409556048-5045-5-git-send-email-minchan@kernel.org> (raw)
In-Reply-To: <1409556048-5045-1-git-send-email-minchan@kernel.org>
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: 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 7b3d54fae46f..fb89d8eb96c8 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
next prev parent reply other threads:[~2014-09-01 7:20 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-01 7:20 [PATCH v16 0/7] MADV_FREE support Minchan Kim
2014-09-01 7:20 ` [PATCH v16 1/7] mm: support madvise(MADV_FREE) Minchan Kim
2014-09-16 6:08 ` SeongJae Park
2014-09-19 6:17 ` Minchan Kim
2014-09-01 7:20 ` [PATCH v16 2/7] x86: add pmd_[dirty|mkclean] for THP Minchan Kim
2014-09-01 7:20 ` [PATCH v16 3/7] sparc: " Minchan Kim
2014-09-01 7:20 ` Minchan Kim [this message]
2014-09-01 7:20 ` [PATCH v16 5/7] arm: add pmd_mkclean " Minchan Kim
2014-09-01 7:20 ` [PATCH v16 6/7] arm64: add pmd_[dirty|mkclean] " Minchan Kim
2014-09-01 7:20 ` [PATCH v16 7/7] mm: Don't split THP page when syscall is called Minchan Kim
2014-09-11 23:10 ` [PATCH v16 0/7] MADV_FREE support Minchan Kim
2014-09-19 6:17 ` Minchan Kim
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