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authorChristoph Lameter <clameter@sgi.com>2006-06-23 02:03:37 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-23 07:42:50 -0700
commit6c5240ae7f48c83fcaa8e24fa63e7eb09aba5651 (patch)
treefede2324f4348701e60758d7f894aae4b09cdc9a /mm/Kconfig
parentd75a0fcda2cfc71b50e16dc89e0c32c57d427e85 (diff)
downloadlinux-6c5240ae7f48c83fcaa8e24fa63e7eb09aba5651.tar.bz2
[PATCH] Swapless page migration: modify core logic
Use the migration entries for page migration This modifies the migration code to use the new migration entries. It now becomes possible to migrate anonymous pages without having to add a swap entry. We add a couple of new functions to replace migration entries with the proper ptes. We cannot take the tree_lock for migrating anonymous pages anymore. However, we know that we hold the only remaining reference to the page when the page count reaches 1. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/Kconfig')
-rw-r--r--mm/Kconfig4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/Kconfig b/mm/Kconfig
index 332f5c29b53a..66e65ab39426 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -138,8 +138,8 @@ config SPLIT_PTLOCK_CPUS
#
config MIGRATION
bool "Page migration"
- def_bool y if NUMA
- depends on SWAP && NUMA
+ def_bool y
+ depends on NUMA
help
Allows the migration of the physical location of pages of processes
while the virtual addresses are not changed. This is useful for