From: Mel Gorman <mgorman@suse.de>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Richard Davies <richard@arachsys.com>, KVM <kvm@vger.kernel.org>,
QEMU-devel <qemu-devel@nongnu.org>,
LKML <linux-kernel@vger.kernel.org>,
Linux-MM <linux-mm@kvack.org>, Avi Kivity <avi@redhat.com>,
Shaohua Li <shli@kernel.org>, Mel Gorman <mgorman@suse.de>
Subject: [Qemu-devel] [PATCH 1/9] Revert "mm: compaction: check lock contention first before taking lock"
Date: Fri, 21 Sep 2012 11:46:15 +0100 [thread overview]
Message-ID: <1348224383-1499-2-git-send-email-mgorman@suse.de> (raw)
In-Reply-To: <1348224383-1499-1-git-send-email-mgorman@suse.de>
This reverts
mm-compaction-check-lock-contention-first-before-taking-lock.patch as it
is replaced by a later patch in the series.
Signed-off-by: Mel Gorman <mgorman@suse.de>
---
mm/compaction.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/mm/compaction.c b/mm/compaction.c
index 3bb7232..4a77b4b 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -347,9 +347,8 @@ isolate_migratepages_range(struct zone *zone, struct compact_control *cc,
/* Time to isolate some pages for migration */
cond_resched();
- locked = compact_trylock_irqsave(&zone->lru_lock, &flags, cc);
- if (!locked)
- return 0;
+ spin_lock_irqsave(&zone->lru_lock, flags);
+ locked = true;
for (; low_pfn < end_pfn; low_pfn++) {
struct page *page;
--
1.7.9.2
next prev parent reply other threads:[~2012-09-21 10:46 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-21 10:46 [Qemu-devel] [PATCH 0/9] Reduce compaction scanning and lock contention Mel Gorman
2012-09-21 10:46 ` Mel Gorman [this message]
2012-09-21 17:46 ` [Qemu-devel] [PATCH 1/9] Revert "mm: compaction: check lock contention first before taking lock" Rafael Aquini
2012-09-21 10:46 ` [Qemu-devel] [PATCH 2/9] Revert "mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long-fix" Mel Gorman
2012-09-21 17:47 ` Rafael Aquini
2012-09-21 10:46 ` [Qemu-devel] [PATCH 3/9] Revert "mm: compaction: abort compaction loop if lock is contended or run too long" Mel Gorman
2012-09-21 17:48 ` Rafael Aquini
2012-09-21 10:46 ` [Qemu-devel] [PATCH 4/9] mm: compaction: Abort compaction loop if lock is contended or run too long Mel Gorman
2012-09-21 17:50 ` Rafael Aquini
2012-09-21 21:31 ` Andrew Morton
2012-09-25 7:34 ` Minchan Kim
2012-09-21 10:46 ` [Qemu-devel] [PATCH 5/9] mm: compaction: Acquire the zone->lru_lock as late as possible Mel Gorman
2012-09-21 17:51 ` Rafael Aquini
2012-09-25 7:05 ` Minchan Kim
2012-09-25 7:51 ` Mel Gorman
2012-09-25 8:13 ` Minchan Kim
2012-09-25 21:39 ` Andrew Morton
2012-09-26 0:23 ` Minchan Kim
2012-09-26 10:17 ` Mel Gorman
2012-09-21 10:46 ` [Qemu-devel] [PATCH 6/9] mm: compaction: Acquire the zone->lock " Mel Gorman
2012-09-21 17:52 ` Rafael Aquini
2012-09-21 21:35 ` Andrew Morton
2012-09-24 8:52 ` Mel Gorman
2012-09-25 7:36 ` Minchan Kim
2012-09-25 7:35 ` Minchan Kim
2012-09-21 10:46 ` [Qemu-devel] [PATCH 7/9] Revert "mm: have order > 0 compaction start off where it left" Mel Gorman
2012-09-21 17:52 ` Rafael Aquini
2012-09-25 7:37 ` Minchan Kim
2012-09-21 10:46 ` [Qemu-devel] [PATCH 8/9] mm: compaction: Cache if a pageblock was scanned and no pages were isolated Mel Gorman
2012-09-21 17:53 ` Rafael Aquini
2012-09-21 21:36 ` Andrew Morton
2012-09-24 9:39 ` Mel Gorman
2012-09-24 21:26 ` Andrew Morton
2012-09-25 9:12 ` Mel Gorman
2012-09-25 20:03 ` Andrew Morton
2012-09-27 12:06 ` [Qemu-devel] [PATCH] mm: compaction: cache if a pageblock was scanned and no pages were isolated -fix2 Mel Gorman
2012-09-27 13:12 ` [Qemu-devel] [PATCH 8/9] mm: compaction: Cache if a pageblock was scanned and no pages were isolated Mel Gorman
2012-09-26 0:49 ` Minchan Kim
2012-09-27 12:14 ` Mel Gorman
2012-09-21 10:46 ` [Qemu-devel] [PATCH 9/9] mm: compaction: Restart compaction from near where it left off Mel Gorman
2012-09-21 17:54 ` Rafael Aquini
2012-09-21 13:51 ` [Qemu-devel] [PATCH 0/9] Reduce compaction scanning and lock contention Rik van Riel
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