NFS: Remove the NIPQUAD from nfs_try_mount

In the name of address family compatibility, we can't have the NIP_FMT and
NIPQUAD macros in nfs_try_mount().  Instead, we can make use of an unused
mount option to display the mount server's hostname.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: Aurelien Charbon <aurelien.charbon@ext.bull.net>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index a88697f..f120be4 100644 (file)
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -89,7 +89,7 @@ enum {
        Opt_nfsvers,
 
        /* Mount options that take string arguments */
-       Opt_sec, Opt_proto, Opt_mountproto,
+       Opt_sec, Opt_proto, Opt_mountproto, Opt_mounthost,
        Opt_addr, Opt_mountaddr, Opt_clientaddr,
 
        /* Mount options that are ignored */
@@ -148,7 +148,7 @@ static match_table_t nfs_mount_option_tokens = {
        { Opt_mountproto, "mountproto=%s" },
        { Opt_addr, "addr=%s" },
        { Opt_clientaddr, "clientaddr=%s" },
-       { Opt_userspace, "mounthost=%s" },
+       { Opt_mounthost, "mounthost=%s" },
        { Opt_mountaddr, "mountaddr=%s" },
 
        { Opt_err, NULL }
@@ -974,6 +974,12 @@ static int nfs_parse_mount_options(char *raw,
                                goto out_nomem;
                        mnt->client_address = string;
                        break;
+               case Opt_mounthost:
+                       string = match_strdup(args);
+                       if (string == NULL)
+                               goto out_nomem;
+                       mnt->mount_server.hostname = string;
+                       break;
                case Opt_mountaddr:
                        string = match_strdup(args);
                        if (string == NULL)
@@ -1027,6 +1033,7 @@ static int nfs_try_mount(struct nfs_parsed_mount_data *args,
 {
        struct sockaddr_in sin;
        int status;
+       char *hostname;
 
        if (args->mount_server.version == 0) {
                if (args->flags & NFS_MOUNT_VER3)
@@ -1035,6 +1042,11 @@ static int nfs_try_mount(struct nfs_parsed_mount_data *args,
                        args->mount_server.version = NFS_MNT_VERSION;
        }
 
+       if (args->mount_server.hostname)
+               hostname = args->mount_server.hostname;
+       else
+               hostname = args->nfs_server.hostname;
+
        /*
         * Construct the mount server's address.
         */
@@ -1053,7 +1065,7 @@ static int nfs_try_mount(struct nfs_parsed_mount_data *args,
         */
        status = nfs_mount((struct sockaddr *) &sin,
                           sizeof(sin),
-                          args->nfs_server.hostname,
+                          hostname,
                           args->nfs_server.export_path,
                           args->mount_server.version,
                           args->mount_server.protocol,
@@ -1061,8 +1073,8 @@ static int nfs_try_mount(struct nfs_parsed_mount_data *args,
        if (status == 0)
                return 0;
 
-       dfprintk(MOUNT, "NFS: unable to mount server " NIPQUAD_FMT
-                       ", error %d\n", NIPQUAD(sin.sin_addr.s_addr), status);
+       dfprintk(MOUNT, "NFS: unable to mount server %s, error %d",
+                       hostname, status);
        return status;
 }
 
@@ -1468,6 +1480,7 @@ static int nfs_get_sb(struct file_system_type *fs_type,
 
 out:
        kfree(data.nfs_server.hostname);
+       kfree(data.mount_server.hostname);
        return error;
 
 out_err_nosb: