nfs41: add mount command option minorversion
mount -t nfs4 -o minorversion=[0|1] specifies whether to use 4.0 or 4.1.
By default, the minorversion is set to 0.
Signed-off-by: Mike Sager <sager@netapp.com>
[set default minorversion to 0 as per Trond and SteveD's request]
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index d2d6778..5a8fdc7 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -90,6 +90,7 @@
Opt_mountport,
Opt_mountvers,
Opt_nfsvers,
+ Opt_minorversion,
/* Mount options that take string arguments */
Opt_sec, Opt_proto, Opt_mountproto, Opt_mounthost,
@@ -155,6 +156,7 @@
{ Opt_mountvers, "mountvers=%u" },
{ Opt_nfsvers, "nfsvers=%u" },
{ Opt_nfsvers, "vers=%u" },
+ { Opt_minorversion, "minorversion=%u" },
{ Opt_sec, "sec=%s" },
{ Opt_proto, "proto=%s" },
@@ -1211,6 +1213,13 @@
nfs_parse_invalid_value("nfsvers");
}
break;
+ case Opt_minorversion:
+ if (match_int(args, &option))
+ return 0;
+ if (option < 0 || option > NFS4_MAX_MINOR_VERSION)
+ return 0;
+ mnt->minorversion = option;
+ break;
/*
* options that take text values
@@ -2261,6 +2270,7 @@
args->nfs_server.port = NFS_PORT; /* 2049 unless user set port= */
args->auth_flavors[0] = RPC_AUTH_UNIX;
args->auth_flavor_len = 0;
+ args->minorversion = 0;
switch (data->version) {
case 1: