From: Minchan Kim <minchan@kernel•org>
To: Andrew Morton <akpm@linux-foundation•org>
Cc: Jason Evans <je@fb•com>, Rik van Riel <riel@redhat•com>,
Minchan Kim <minchan@kernel•org>,
"Aneesh Kumar K.V" <aneesh.kumar@linux•vnet.ibm.com>,
Linux API <linux-api@vger•kernel.org>,
Hugh Dickins <hughd@google•com>,
linux-kernel@vger•kernel.org, linux-mm@kvack•org,
Zhang Yanfei <zhangyanfei@cn•fujitsu.com>,
Michael Kerrisk <mtk.manpages@gmail•com>,
KOSAKI Motohiro <kosaki.motohiro@jp•fujitsu.com>,
Johannes Weiner <hannes@cmpxchg•org>,
"Kirill A. Shutemov" <kirill@shutemov•name>,
linuxppc-dev@lists•ozlabs.org, Paul Mackerras <paulus@samba•org>,
Mel Gorman <mgorman@suse•de>
Subject: [PATCH v13 4/8] powerpc: add pmd_[dirty|mkclean] for THP
Date: Fri, 18 Jul 2014 15:53:02 +0900 [thread overview]
Message-ID: <1405666386-15095-5-git-send-email-minchan@kernel.org> (raw)
In-Reply-To: <1405666386-15095-1-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: "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
next parent reply other threads:[~2014-07-18 6:52 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1405666386-15095-1-git-send-email-minchan@kernel.org>
2014-07-18 6:53 ` Minchan Kim [this message]
2014-08-04 10:50 ` [PATCH v13 4/8] powerpc: add pmd_[dirty|mkclean] for THP Aneesh Kumar K.V
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