fork, memcg: fix cached_stacks case

[linux-2.6-microblaze.git] / mm / Kconfig

diff --git a/mm/Kconfig b/mm/Kconfig
index d85e39d..25c71eb 100644 (file)
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -291,6 +291,7 @@ config MMU_NOTIFIER
 config KSM
        bool "Enable KSM for page merging"
        depends on MMU
+       select XXHASH
        help
          Enable Kernel Samepage Merging: KSM periodically scans those areas
          of an application's address space that an app has advised may be