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Message-Id: <1376377502-28207-2-git-send-email-minchan@kernel.org>
Date: Tue, 13 Aug 2013 16:05:00 +0900
From: Minchan Kim <minchan@...nel.org>
To: linux-kernel@...r.kernel.org
Cc: linux-mm@...ck.org, k.kozlowski@...sung.com,
Seth Jennings <sjenning@...ux.vnet.ibm.com>,
Mel Gorman <mgorman@...e.de>, guz.fnst@...fujitsu.com,
Benjamin LaHaise <bcrl@...ck.org>,
Dave Hansen <dave.hansen@...el.com>, lliubbo@...il.com,
aquini@...hat.com, Rik van Riel <riel@...hat.com>,
Minchan Kim <minchan@...nel.org>
Subject: [RFC 1/3] mm: Introduce new page flag
Signed-off-by: Minchan Kim <minchan@...nel.org>
---
include/linux/page-flags.h | 2 ++
mm/page_alloc.c | 1 +
2 files changed, 3 insertions(+)
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 6d53675..75ce843 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -109,6 +109,7 @@ enum pageflags {
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
PG_compound_lock,
#endif
+ PG_pin,
__NR_PAGEFLAGS,
/* Filesystems */
@@ -197,6 +198,7 @@ struct page; /* forward declaration */
TESTPAGEFLAG(Locked, locked)
PAGEFLAG(Error, error) TESTCLEARFLAG(Error, error)
+PAGEFLAG(Pin, pin) TESTCLEARFLAG(Pin, pin)
PAGEFLAG(Referenced, referenced) TESTCLEARFLAG(Referenced, referenced)
PAGEFLAG(Dirty, dirty) TESTSCFLAG(Dirty, dirty) __CLEARPAGEFLAG(Dirty, dirty)
PAGEFLAG(LRU, lru) __CLEARPAGEFLAG(LRU, lru)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index b100255..5dd8b43 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6345,6 +6345,7 @@ static const struct trace_print_flags pageflag_names[] = {
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
{1UL << PG_compound_lock, "compound_lock" },
#endif
+ {1UL << PG_pin, "pin" },
};
static void dump_page_flags(unsigned long flags)
--
1.7.9.5
--
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