doc/cephfs: Improve mount-using-fuse.rst

Signed-off-by: Anthony D'Atri <[email protected]>

Author: anthonyeleven

doc/cephfs/mount-using-fuse.rst

@@ -47,17 +47,17 @@ too::
 
     ceph-fuse --id foo -k /path/to/keyring /mnt/mycephfs
 
-You may pass the MON's socket too, although this is not mandatory::
+You may pass a Monitor's address and port on the commandline, although this is not mandatory::
 
     ceph-fuse --id foo -m 192.168.0.1:6789 /mnt/mycephfs
 
 You can also mount a specific directory within CephFS instead of mounting
-root of CephFS on your local FS::
+the CephFS root::
 
     ceph-fuse --id foo -r /path/to/dir /mnt/mycephfs
 
-If you have more than one FS on your Ceph cluster, use the option
-``--client_fs`` to mount the non-default FS::
+If you serve more than one CephFS file system from your Ceph cluster, use the option
+``--client_fs`` to mount the non-default file system::
 
     ceph-fuse --id foo --client_fs mycephfs2 /mnt/mycephfs2
 
@@ -71,8 +71,8 @@ Use ``umount`` to unmount CephFS like any other FS::
 
     umount /mnt/mycephfs
 
-.. tip:: Ensure that you are not within the file system directories before
-   executing this command.
+.. tip:: Ensure that no shell or other processes have open files under the file system
+   before executing this command.  This includes a shell's current working directory.
 
 Persistent Mounts
 =================