From: Xishi Qiu <qiuxishi@huawei.com>
To: Andrew Morton <akpm@linux-foundation.org>,
Mel Gorman <mgorman@suse.de>,
riel@redhat.com, Minchan Kim <minchan@kernel.org>,
aquini@redhat.com
Cc: linux-mm@kvack.org, LKML <linux-kernel@vger.kernel.org>,
Xishi Qiu <qiuxishi@huawei.com>
Subject: [PATCH] mm: skip the page buddy block instead of one page
Date: Wed, 14 Aug 2013 12:45:41 +0800 [thread overview]
Message-ID: <520B0B75.4030708@huawei.com> (raw)
A large free page buddy block will continue many times, so if the page
is free, skip the whole page buddy block instead of one page.
Signed-off-by: Xishi Qiu <qiuxishi@huawei.com>
---
mm/compaction.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/mm/compaction.c b/mm/compaction.c
index 05ccb4c..874bae1 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -520,9 +520,10 @@ isolate_migratepages_range(struct zone *zone, struct compact_control *cc,
goto next_pageblock;
/* Skip if free */
- if (PageBuddy(page))
+ if (PageBuddy(page)) {
+ low_pfn += (1 << page_order(page)) - 1;
continue;
-
+ }
/*
* For async migration, also only scan in MOVABLE blocks. Async
* migration is optimistic to see if the minimum amount of work
--
1.7.1
--
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WARNING: multiple messages have this Message-ID (diff)
From: Xishi Qiu <qiuxishi@huawei.com>
To: Andrew Morton <akpm@linux-foundation.org>,
Mel Gorman <mgorman@suse.de>, <riel@redhat.com>,
Minchan Kim <minchan@kernel.org>, <aquini@redhat.com>
Cc: <linux-mm@kvack.org>, LKML <linux-kernel@vger.kernel.org>,
Xishi Qiu <qiuxishi@huawei.com>
Subject: [PATCH] mm: skip the page buddy block instead of one page
Date: Wed, 14 Aug 2013 12:45:41 +0800 [thread overview]
Message-ID: <520B0B75.4030708@huawei.com> (raw)
A large free page buddy block will continue many times, so if the page
is free, skip the whole page buddy block instead of one page.
Signed-off-by: Xishi Qiu <qiuxishi@huawei.com>
---
mm/compaction.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/mm/compaction.c b/mm/compaction.c
index 05ccb4c..874bae1 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -520,9 +520,10 @@ isolate_migratepages_range(struct zone *zone, struct compact_control *cc,
goto next_pageblock;
/* Skip if free */
- if (PageBuddy(page))
+ if (PageBuddy(page)) {
+ low_pfn += (1 << page_order(page)) - 1;
continue;
-
+ }
/*
* For async migration, also only scan in MOVABLE blocks. Async
* migration is optimistic to see if the minimum amount of work
--
1.7.1
next reply other threads:[~2013-08-14 4:46 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-14 4:45 Xishi Qiu [this message]
2013-08-14 4:45 ` [PATCH] mm: skip the page buddy block instead of one page Xishi Qiu
2013-08-14 7:07 ` Minchan Kim
2013-08-14 7:07 ` Minchan Kim
2013-08-14 8:57 ` Mel Gorman
2013-08-14 8:57 ` Mel Gorman
2013-08-14 9:14 ` Xishi Qiu
2013-08-14 9:14 ` Xishi Qiu
2013-08-14 15:52 ` Minchan Kim
2013-08-14 15:52 ` Minchan Kim
2013-08-14 16:16 ` Mel Gorman
2013-08-14 16:16 ` Mel Gorman
2013-08-14 16:39 ` Minchan Kim
2013-08-14 16:39 ` Minchan Kim
2013-08-14 18:00 ` Mel Gorman
2013-08-14 18:00 ` Mel Gorman
2013-08-14 19:11 ` Minchan Kim
2013-08-14 19:11 ` Minchan Kim
2013-08-15 2:32 ` Xishi Qiu
2013-08-15 2:32 ` Xishi Qiu
2013-08-15 2:44 ` Minchan Kim
2013-08-15 2:44 ` Minchan Kim
2013-08-15 3:46 ` Xishi Qiu
2013-08-15 3:46 ` Xishi Qiu
2013-08-15 3:59 ` Wanpeng Li
2013-08-15 3:59 ` Wanpeng Li
2013-08-15 4:17 ` Minchan Kim
2013-08-15 4:17 ` Minchan Kim
2013-08-15 4:24 ` Minchan Kim
2013-08-15 4:24 ` Minchan Kim
2013-08-15 7:45 ` Xishi Qiu
2013-08-15 7:45 ` Xishi Qiu
2013-08-15 9:51 ` Wanpeng Li
2013-08-15 9:51 ` Wanpeng Li
2013-08-15 11:15 ` Xishi Qiu
2013-08-15 11:15 ` Xishi Qiu
2013-08-15 11:23 ` Wanpeng Li
2013-08-15 11:23 ` Wanpeng Li
2013-08-15 11:17 ` Xishi Qiu
2013-08-15 11:17 ` Xishi Qiu
2013-08-15 6:38 ` Xishi Qiu
2013-08-15 6:38 ` Xishi Qiu
2013-08-15 11:30 ` Mel Gorman
2013-08-15 11:30 ` Mel Gorman
2013-08-15 13:19 ` Minchan Kim
2013-08-15 13:19 ` Minchan Kim
2013-08-15 13:42 ` Mel Gorman
2013-08-15 13:42 ` Mel Gorman
2013-08-15 14:16 ` Minchan Kim
2013-08-15 14:16 ` Minchan Kim
2013-08-14 20:26 ` Andrew Morton
2013-08-14 20:26 ` Andrew Morton
2013-08-14 22:22 ` Mel Gorman
2013-08-14 22:22 ` Mel Gorman
2014-01-17 14:32 ` [PATCH] mm: Improve documentation of page_order Mel Gorman
2014-01-17 14:32 ` Mel Gorman
2014-01-17 18:40 ` Rafael Aquini
2014-01-17 18:40 ` Rafael Aquini
2014-01-17 18:53 ` Laura Abbott
2014-01-17 18:53 ` Laura Abbott
2014-01-17 19:59 ` Mel Gorman
2014-01-17 19:59 ` Mel Gorman
2014-01-21 11:05 ` [PATCH] mm: Improve documentation of page_order v2 Mel Gorman
2014-01-21 11:05 ` Mel Gorman
2014-01-20 6:12 ` [PATCH] mm: Improve documentation of page_order Minchan Kim
2014-01-20 6:12 ` Minchan Kim
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