• C
    NFS: Save the value of the "port=" mount option · f22d6d79
    Chuck Lever 提交于
    During a remount based on the mount options displayed in /proc/mounts, we
    want to preserve the original behavior of the mount request.  Let's save
    the original setting of the "port=" mount option in the mount's nfs_server
    structure.
    
    This allows us to simplify the default behavior of port setting for NFSv4
    mounts: by default, NFSv2/3 mounts first try an RPC bind to determine the
    NFS server's port, unless the user specified the "port=" mount option;
    Users can force the client to skip the RPC bind by explicitly specifying
    "port=<value>".
    
    NFSv4, by contrast, assumes the NFS server port is 2049 and skips the RPC
    bind, unless the user specifies "port=".  Users can force an RPC bind for
    NFSv4 by explicitly specifying "port=0".
    
    I added a couple of extra comments to clarify this behavior.
    Signed-off-by: NChuck Lever <chuck.lever@oracle.com>
    Cc: Miklos Szeredi <miklos@szeredi.hu>
    Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
    f22d6d79
client.c 37.5 KB