add support for cpuset.mems

Signed-off-by: Qiang Huang <h.huangqiang@huawei.com>

docs/sources/reference/commandline/cli.md

@@ -892,6 +892,7 @@ Creates a new container.
       --cgroup-parent=""         Optional parent cgroup for the container
       --cidfile=""               Write the container ID to the file
       --cpuset-cpus=""           CPUs in which to allow execution (0-3, 0,1)
+      --cpuset-mems=""           Memory nodes (MEMs) in which to allow execution (0-3, 0,1)
       --device=[]                Add a host device to the container
       --dns=[]                   Set custom DNS servers
       --dns-search=[]            Set custom DNS search domains
@@ -1844,6 +1845,7 @@ To remove an image using its digest:
       --cap-drop=[]              Drop Linux capabilities
       --cidfile=""               Write the container ID to the file
       --cpuset-cpus=""           CPUs in which to allow execution (0-3, 0,1)
+      --cpuset-mems=""           Memory nodes (MEMs) in which to allow execution (0-3, 0,1)
       -d, --detach=false         Run container in background and print container ID
       --device=[]                Add a host device to the container
       --dns=[]                   Set custom DNS servers

docs/sources/reference/run.md

@@ -474,6 +474,7 @@ container:
     -memory-swap="": Total memory limit (memory + swap, format: <number><optional unit>, where unit = b, k, m or g)
     -c, --cpu-shares=0: CPU shares (relative weight)
     --cpuset-cpus="": CPUs in which to allow execution (0-3, 0,1)
+    --cpuset-mems="": Memory nodes (MEMs) in which to allow execution (0-3, 0,1). Only effective on NUMA systems.
 
 ### Memory constraints
 
@@ -599,6 +600,21 @@ This means processes in container can be executed on cpu 1 and cpu 3.
 
 This means processes in container can be executed on cpu 0, cpu 1 and cpu 2.
 
+We can set mems in which to allow execution for containers. Only effective
+on NUMA systems.
+
+Examples:
+
+    $ docker run -ti --cpuset-mems="1,3" ubuntu:14.04 /bin/bash
+
+This example restricts the processes in the container to only use memory from
+memory nodes 1 and 3.
+
+    $ docker run -ti --cpuset-mems="0-2" ubuntu:14.04 /bin/bash
+
+This example restricts the processes in the container to only use memory from
+memory nodes 0, 1 and 2.
+
 ## Runtime privilege, Linux capabilities, and LXC configuration
 
     --cap-add: Add Linux capabilities