kNFSd - In READDIRPLUS reply, don't return a file handle for a mounted directory.

### Comments for ChangeSet

... as if "nohide" is in used, it will be the wrong filehandle, and returning a filehandle is optional anyway.

----------- Diffstat output ------------

 ./fs/nfsd/nfs3xdr.c |    2 ++
 1 files changed, 2 insertions(+)

diff ./fs/nfsd/nfs3xdr.c~current~ ./fs/nfsd/nfs3xdr.c
@@ -825,6 +825,8 @@ encode_entry(struct readdir_cd *ccd, con
 			dchild = lookup_one_len(name, dparent,namlen);
 		if (IS_ERR(dchild))
 			goto noexec;
+		if (d_mountpoint(dchild))
+			goto noexec;
 		if (fh_compose(&fh, exp, dchild, &cd->fh) != 0 || !dchild->d_inode)
 			goto noexec;
 		p = encode_post_op_attr(cd->rqstp, p, &fh);

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