NFS: Fix port initialisation in nfs_remount()

The recent changeset 53a0b9c4c99ab0085a06421f71592722e5b3fd5f (NFS: Replace
nfs_parse_ip_address() with rpc_pton()) broke nfs_remount, since the call
to rpc_pton() will zero out the port number in data->nfs_server.address.

This is actually due to a bug in nfs_remount: it should be looking at the
port number in nfs_server.port instead...

This fixes bug
   http://bugzilla.kernel.org/show_bug.cgi?id=14276

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 0d14704..fb3b280 100644 (file)
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -1846,9 +1846,10 @@ nfs_compare_remount_data(struct nfs_server *nfss,
            data->acdirmin != nfss->acdirmin / HZ ||
            data->acdirmax != nfss->acdirmax / HZ ||
            data->timeo != (10U * nfss->client->cl_timeout->to_initval / HZ) ||
+           data->nfs_server.port != nfss->port ||
            data->nfs_server.addrlen != nfss->nfs_client->cl_addrlen ||
-           memcmp(&data->nfs_server.address, &nfss->nfs_client->cl_addr,
-                  data->nfs_server.addrlen) != 0)
+           !rpc_cmp_addr(&data->nfs_server.address,
+                   &nfss->nfs_client->cl_addr))
                return -EINVAL;
 
        return 0;
@@ -1891,6 +1892,7 @@ nfs_remount(struct super_block *sb, int *flags, char *raw_data)
        data->acdirmin = nfss->acdirmin / HZ;
        data->acdirmax = nfss->acdirmax / HZ;
        data->timeo = 10U * nfss->client->cl_timeout->to_initval / HZ;
+       data->nfs_server.port = nfss->port;
        data->nfs_server.addrlen = nfss->nfs_client->cl_addrlen;
        memcpy(&data->nfs_server.address, &nfss->nfs_client->cl_addr,
                data->nfs_server.addrlen);