From: David Rientjes <rientjes@google.com>
To: Rafael Aquini <aquini@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>
Cc: kbuild test robot <fengguang.wu@intel.com>,
linux-mm@kvack.org, Michal Hocko <mhocko@suse.cz>
Subject: [patch] mm: introduce a common interface for balloon pages mobility fix
Date: Tue, 27 Nov 2012 16:15:59 -0800 (PST) [thread overview]
Message-ID: <alpine.DEB.2.00.1211271614150.22996@chino.kir.corp.google.com> (raw)
In-Reply-To: <20121128000355.GA7401@t510.redhat.com>
It's useful to keep memory defragmented so that all high-order page
allocations have a chance to succeed, not simply transparent hugepages.
Thus, allow balloon compaction for any system with memory compaction
enabled, which is the defconfig.
Signed-off-by: David Rientjes <rientjes@google.com>
---
mm/Kconfig | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/mm/Kconfig b/mm/Kconfig
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -200,7 +200,7 @@ config SPLIT_PTLOCK_CPUS
config BALLOON_COMPACTION
bool "Allow for balloon memory compaction/migration"
def_bool y
- depends on TRANSPARENT_HUGEPAGE && VIRTIO_BALLOON
+ depends on COMPACTION && VIRTIO_BALLOON
help
Memory fragmentation introduced by ballooning might reduce
significantly the number of 2MB contiguous memory blocks that can be
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next prev parent reply other threads:[~2012-11-28 0:16 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-16 15:13 [memcg:since-3.6 365/437] warning: (BALLOON_COMPACTION && TRANSPARENT_HUGEPAGE) selects COMPACTION which has unmet direct dependencies (MMU) kbuild test robot
2012-11-16 19:50 ` [patch] mm: introduce a common interface for balloon pages mobility fix David Rientjes
2012-11-16 20:10 ` Rafael Aquini
2012-11-16 22:03 ` David Rientjes
2012-11-27 23:50 ` David Rientjes
2012-11-28 0:03 ` Rafael Aquini
2012-11-28 0:15 ` David Rientjes [this message]
2012-11-28 9:59 ` Michal Hocko
2012-11-28 10:57 ` Rafael Aquini
2012-11-16 20:12 ` Rafael Aquini
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