[PATCH] mm: make page migration dependent on swap and NUMA

The page migration code could function without NUMA but we currently have
no users for the non-NUMA case.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/mm/Kconfig b/mm/Kconfig
index bd80460360db38a0b9d03dfefd087d6036c1b216..332f5c29b53a3c04665e4d727fc50dbfde609fb2 100644 (file)
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -138,8 +138,8 @@ config SPLIT_PTLOCK_CPUS
 #
 config MIGRATION
        bool "Page migration"
-       def_bool y if NUMA || SPARSEMEM || DISCONTIGMEM
-       depends on SWAP
+       def_bool y if NUMA
+       depends on SWAP && NUMA
        help
          Allows the migration of the physical location of pages of processes
          while the virtual addresses are not changed. This is useful for