nfsd4: rename cr_linkname->cr_data

The name of a link is currently stored in cr_name and cr_namelen, and
the content in cr_linkname and cr_linklen.  That's confusing.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 7aa83bf..b57c882 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -623,7 +623,7 @@
 	case NF4LNK:
 		status = nfsd_symlink(rqstp, &cstate->current_fh,
 				      create->cr_name, create->cr_namelen,
-				      create->cr_linkname,
+				      create->cr_data,
 				      &resfh, &create->cr_iattr);
 		break;