NFSv4: Fix the readdir reply buffer alignment

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

fs/nfs/nfs4xdr.c

@@ -1168,12 +1168,10 @@ static int encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args)
 
 static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req)
 {
-	struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
 	uint32_t attrs[2] = {
 		FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
 		FATTR4_WORD1_MOUNTED_ON_FILEID,
 	};
-	int replen;
 	__be32 *p;
 
 	RESERVE_SPACE(12+NFS4_VERIFIER_SIZE+20);
@@ -1198,17 +1196,6 @@ static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg
 			attrs[0] & readdir->bitmask[0],
 			attrs[1] & readdir->bitmask[1]);
 
-	/* set up reply kvec
-	 *    toplevel_status + taglen + rescount + OP_PUTFH + status
-	 *      + OP_READDIR + status + verifer(2)  = 9
-	 */
-	replen = (RPC_REPHDRSIZE + auth->au_rslack + 9) << 2;
-	xdr_inline_pages(&req->rq_rcv_buf, replen, readdir->pages,
-			 readdir->pgbase, readdir->count);
-	dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
-			__FUNCTION__, replen, readdir->pages,
-			readdir->pgbase, readdir->count);
-
 	return 0;
 }
 
@@ -1815,6 +1802,8 @@ static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nf
 	struct compound_hdr hdr = {
 		.nops = 2,
 	};
+	struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
+	int replen;
 	int status;
 
 	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
@@ -1823,6 +1812,18 @@ static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nf
 	if(status)
 		goto out;
 	status = encode_readdir(&xdr, args, req);
+
+	/* set up reply kvec
+	 *    toplevel_status + taglen + rescount + OP_PUTFH + status
+	 *      + OP_READDIR + status + verifer(2)  = 9
+	 */
+	replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_readdir_sz) << 2;
+	xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages,
+			 args->pgbase, args->count);
+	dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
+			__FUNCTION__, replen, args->pages,
+			args->pgbase, args->count);
+
 out:
 	return status;
 }