From: Huang Shijie <shijie8@gmail.com>
To: akpm@linux-foundation.org
Cc: mel@csn.ul.ie, kosaki.motohiro@jp.fujitsu.com,
linux-mm@kvack.org, Huang Shijie <shijie8@gmail.com>
Subject: [PATCH 2/4] mm/page_alloc : relieve the zone->lock's pressure for allocation
Date: Mon, 11 Jan 2010 12:37:12 +0800 [thread overview]
Message-ID: <1263184634-15447-2-git-send-email-shijie8@gmail.com> (raw)
In-Reply-To: <1263184634-15447-1-git-send-email-shijie8@gmail.com>
The __mod_zone_page_state() only require irq disabling,
it does not require the zone's spinlock. So move it out of
the guard region of the spinlock to relieve the pressure for
allocation.
Signed-off-by: Huang Shijie <shijie8@gmail.com>
---
mm/page_alloc.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 23df1ed..00aa83a 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -961,8 +961,8 @@ static int rmqueue_single(struct zone *zone, unsigned long count,
set_page_private(page, migratetype);
list = &page->lru;
}
- __mod_zone_page_state(zone, NR_FREE_PAGES, -i);
spin_unlock(&zone->lock);
+ __mod_zone_page_state(zone, NR_FREE_PAGES, -i);
return i;
}
--
1.6.5.2
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next prev parent reply other threads:[~2010-01-11 4:37 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-11 4:37 [PATCH 1/4] mm/page_alloc : rename rmqueue_bulk to rmqueue_single Huang Shijie
2010-01-11 4:37 ` Huang Shijie [this message]
2010-01-11 4:37 ` [PATCH 3/4] mm/page_alloc : modify the return type of __free_one_page Huang Shijie
2010-01-11 4:37 ` [PATCH 4/4] mm/page_alloc : relieve zone->lock's pressure for memory free Huang Shijie
2010-01-11 5:20 ` Minchan Kim
2010-01-11 6:01 ` Huang Shijie
2010-01-11 6:27 ` Huang Shijie
2010-01-11 6:38 ` Minchan Kim
2010-01-11 6:59 ` Huang Shijie
2010-01-12 0:47 ` KAMEZAWA Hiroyuki
2010-01-12 2:02 ` Huang Shijie
2010-01-12 2:07 ` KAMEZAWA Hiroyuki
2010-01-12 2:32 ` Huang Shijie
2010-01-12 2:27 ` Wu Fengguang
2010-01-12 2:56 ` KOSAKI Motohiro
2010-01-12 3:02 ` Huang Shijie
2010-01-12 4:05 ` Minchan Kim
2010-01-12 4:21 ` Wu Fengguang
2010-01-12 4:32 ` KAMEZAWA Hiroyuki
2010-01-12 4:59 ` Wu Fengguang
2010-01-12 5:09 ` Wu Fengguang
2010-01-12 5:10 ` KOSAKI Motohiro
2010-01-12 7:36 ` David Rientjes
2010-01-12 8:56 ` KOSAKI Motohiro
2010-01-12 21:39 ` David Rientjes
2010-01-13 0:01 ` KOSAKI Motohiro
2010-01-12 4:48 ` Minchan Kim
2010-01-12 2:51 ` Huang Shijie
2010-01-12 3:03 ` Wu Fengguang
2010-01-12 3:05 ` KOSAKI Motohiro
2010-01-11 5:04 ` [PATCH 3/4] mm/page_alloc : modify the return type of __free_one_page Minchan Kim
2010-01-12 2:56 ` KOSAKI Motohiro
2010-01-18 11:25 ` Mel Gorman
2010-01-19 1:49 ` Huang Shijie
2010-01-11 5:02 ` [PATCH 2/4] mm/page_alloc : relieve the zone->lock's pressure for allocation Minchan Kim
2010-01-11 5:13 ` Huang Shijie
2010-01-12 2:54 ` KOSAKI Motohiro
2010-01-18 11:24 ` Mel Gorman
2010-01-11 5:00 ` [PATCH 1/4] mm/page_alloc : rename rmqueue_bulk to rmqueue_single Minchan Kim
2010-01-12 2:52 ` KOSAKI Motohiro
2010-01-18 11:21 ` Mel Gorman
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