From: Rik van Riel <riel@redhat.com>
Date: Mon, 8 Oct 2012 23:33:03 +0000 (-0700)
Subject: mm: enable CONFIG_COMPACTION by default
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;ds=sidebyside;h=05106e6a54aed321191b4bb5c9ee09538cbad3b1;p=deliverable%2Flinux.git

mm: enable CONFIG_COMPACTION by default

Now that lumpy reclaim has been removed, compaction is the only way left
to free up contiguous memory areas.  It is time to just enable
CONFIG_COMPACTION by default.

Signed-off-by: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Acked-by: Rafael Aquini <aquini@redhat.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/mm/Kconfig b/mm/Kconfig
index 3322342a1ffb..a3f8dddaaab3 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -191,6 +191,7 @@ config SPLIT_PTLOCK_CPUS
 # support for memory compaction
 config COMPACTION
 	bool "Allow for memory compaction"
+	def_bool y
 	select MIGRATION
 	depends on MMU
 	help