From: Konstantin Khlebnikov <koct9i@gmail.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Konstantin Khlebnikov <k.khlebnikov@samsung.com>,
Rafael Aquini <aquini@redhat.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-mm@kvack.org, Andrey Ryabinin <ryabinin.a.a@gmail.com>,
Sasha Levin <sasha.levin@oracle.com>
Subject: [PATCH v2 3/6] mm/balloon_compaction: isolate balloon pages without lru_lock
Date: Sat, 30 Aug 2014 20:41:17 +0400 [thread overview]
Message-ID: <20140830164117.29066.18189.stgit@zurg> (raw)
In-Reply-To: <20140830163834.29066.98205.stgit@zurg>
From: Konstantin Khlebnikov <k.khlebnikov@samsung.com>
LRU-lock isn't required for balloon page isolation. This check makes migration
of some ballooned pages mostly impossible because isolate_migratepages_range()
drops LRU lock periodically.
Signed-off-by: Konstantin Khlebnikov <k.khlebnikov@samsung.com>
Cc: stable <stable@vger.kernel.org> # v3.8
---
mm/compaction.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/compaction.c b/mm/compaction.c
index 73466e1..ad58f73 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -643,7 +643,7 @@ isolate_migratepages_block(struct compact_control *cc, unsigned long low_pfn,
*/
if (!PageLRU(page)) {
if (unlikely(balloon_page_movable(page))) {
- if (locked && balloon_page_isolate(page)) {
+ if (balloon_page_isolate(page)) {
/* Successfully isolated */
goto isolate_success;
}
--
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next prev parent reply other threads:[~2014-08-30 16:41 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-30 16:41 [PATCH v2 0/6] mm/balloon_compaction: fixes and cleanups Konstantin Khlebnikov
2014-08-30 16:41 ` [PATCH v2 1/6] mm/balloon_compaction: ignore anonymous pages Konstantin Khlebnikov
2014-09-02 12:29 ` Rafael Aquini
2014-08-30 16:41 ` [PATCH v2 2/6] mm/balloon_compaction: keep ballooned pages away from normal migration path Konstantin Khlebnikov
2014-09-02 12:31 ` Rafael Aquini
2014-08-30 16:41 ` Konstantin Khlebnikov [this message]
2014-09-02 12:32 ` [PATCH v2 3/6] mm/balloon_compaction: isolate balloon pages without lru_lock Rafael Aquini
2014-08-30 16:41 ` [PATCH v2 4/6] mm: introduce common page state for ballooned memory Konstantin Khlebnikov
2014-09-02 12:53 ` Rafael Aquini
2014-09-12 23:51 ` Andrew Morton
2014-09-13 5:26 ` Konstantin Khlebnikov
2014-09-13 5:42 ` Andrew Morton
2014-09-13 8:22 ` Konstantin Khlebnikov
2014-09-19 21:35 ` Andrew Morton
2014-09-20 5:25 ` Konstantin Khlebnikov
2014-09-20 6:23 ` Andrew Morton
2014-09-22 18:40 ` Konstantin Khlebnikov
2014-09-22 19:22 ` Rafael Aquini
2014-09-22 20:06 ` Konstantin Khlebnikov
2014-09-22 20:22 ` Rafael Aquini
2014-09-22 20:46 ` Konstantin Khlebnikov
2014-09-13 14:03 ` Sasha Levin
2014-08-30 16:41 ` [PATCH v2 5/6] mm/balloon_compaction: use common page ballooning Konstantin Khlebnikov
2014-09-02 12:57 ` Rafael Aquini
2014-09-12 23:57 ` Andrew Morton
2014-08-30 16:41 ` [PATCH v2 6/6] mm/balloon_compaction: general cleanup Konstantin Khlebnikov
2014-09-02 13:09 ` Rafael Aquini
2014-09-13 0:04 ` Andrew Morton
2014-09-13 0:06 ` Andrew Morton
2014-09-13 5:43 ` Konstantin Khlebnikov
2014-09-13 0:09 ` [PATCH v2 0/6] mm/balloon_compaction: fixes and cleanups Andrew Morton
2014-09-13 5:01 ` Konstantin Khlebnikov
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