GIT: unionfs2-2.6.27.y: NFS: rsize and wsize settings ignored on v4 mounts

[Erez Zadok]

commit e3f8d35996e73d5192c33ce5e6f11b4770a7062d
Author: Chuck Lever <chuck.lever at oracle.com>
Date:   Thu Apr 22 15:35:56 2010 -0400

    NFS: rsize and wsize settings ignored on v4 mounts
    
    commit 356e76b855bdbfd8d1c5e75bcf0c6bf0dfe83496 upstream.
    
    NFSv4 mounts ignore the rsize and wsize mount options, and always use
    the default transfer size for both.  This seems to be because all
    NFSv4 mounts are now cloned, and the cloning logic doesn't copy the
    rsize and wsize settings from the parent nfs_server.
    
    I tested Fedora's 2.6.32.11-99 and it seems to have this problem as
    well, so I'm guessing that .33, .32, and perhaps older kernels have
    this issue as well.
    
    Signed-off-by: Chuck Lever <chuck.lever at oracle.com>
    Signed-off-by: Trond Myklebust <Trond.Myklebust at netapp.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh at suse.de>

diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 9d6a0e4..710645c 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -826,6 +826,8 @@ out_error:
 static void nfs_server_copy_userdata(struct nfs_server *target, struct nfs_server *source)
 {
 	target->flags = source->flags;
+	target->rsize = source->rsize;
+	target->wsize = source->wsize;
 	target->acregmin = source->acregmin;
 	target->acregmax = source->acregmax;
 	target->acdirmin = source->acdirmin;