Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394...

[linux-2.6-omap-h63xx.git] / init / Kconfig

diff --git a/init/Kconfig b/init/Kconfig
index dcef8b55011a01db4031b821d99a3b80f44f9d99..f698a5af500791ae7158457f16c9f00df503cbbb 100644 (file)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -394,6 +394,14 @@ config CGROUP_MEM_CONT
          Provides a memory controller that manages both page cache and
          RSS memory.
 
+         Note that setting this option increases fixed memory overhead
+         associated with each page of memory in the system by 4/8 bytes
+         and also increases cache misses because struct page on many 64bit
+         systems will not fit into a single cache line anymore.
+
+         Only enable when you're ok with these trade offs and really
+         sure you need the memory controller.
+
 config PROC_PID_CPUSET
        bool "Include legacy /proc/<pid>/cpuset file"
        depends on CPUSETS