1 files changed, 8 insertions, 0 deletions

diff --git a/init/Kconfig b/init/Kconfig
index dcef8b55011a..f698a5af5007 100644
--- 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