Merge pull request #6452 from mheon/selinux_btrfs_fix

Error if Docker daemon starts with BTRFS graph driver and SELinux enabled
Upstream-commit: 219a3345deade869a415436c2b5c24c0c523ca08
Component: engine

components/engine/docs/man/docker.1.md

@@ -74,7 +74,7 @@ unix://[/path/to/socket] to use.
   Print version information and quit. Default is false.
 
 **--selinux-enabled**=*true*|*false*
-  Enable selinux support. Default is false.
+  Enable selinux support. Default is false. SELinux does not presently support the BTRFS storage driver.
 
 # COMMANDS
 **docker-attach(1)**

components/engine/docs/sources/reference/commandline/cli.md

@@ -73,7 +73,7 @@ expect an integer, and they can only be specified once.
       -p, --pidfile="/var/run/docker.pid"        Path to use for daemon PID file
       -r, --restart=true                         Restart previously running containers
       -s, --storage-driver=""                    Force the Docker runtime to use a specific storage driver
-      --selinux-enabled=false                    Enable selinux support
+      --selinux-enabled=false                    Enable selinux support. SELinux does not presently support the BTRFS storage driver
       --storage-opt=[]                           Set storage driver options
       --tls=false                                Use TLS; implied by tls-verify flags
       --tlscacert="/home/sven/.docker/ca.pem"    Trust only remotes providing a certificate signed by the CA given here