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Commit 67aa7444 authored by Olga Kornievskaia's avatar Olga Kornievskaia Committed by Anna Schumaker
Browse files

NFS COPY xdr handle async reply 



If server returns async reply, it must include a callback stateid,
wr_callback_id in the write_response4.

Signed-off-by: default avatarOlga Kornievskaia <kolga@netapp.com>
Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
parent cb95deea

fs/nfs/nfs42xdr.c

+12 −10
Original line number Diff line number Diff line
@@ -389,21 +389,23 @@ static int decode_write_response(struct xdr_stream *xdr, 
				 struct nfs42_write_res *res)

{

	__be32 *p;

	int status, count;



	p = xdr_inline_decode(xdr, 4 + 8 + 4);

	p = xdr_inline_decode(xdr, 4);

	if (unlikely(!p))

		goto out_overflow;



	/*

	 * We never use asynchronous mode, so warn if a server returns

	 * a stateid.

	 */

	if (unlikely(*p != 0)) {

		pr_err_once("%s: server has set unrequested "

				"asynchronous mode\n", __func__);

	count = be32_to_cpup(p);

	if (count > 1)

		return -EREMOTEIO;

	else if (count == 1) {

		status = decode_opaque_fixed(xdr, &res->stateid,

				NFS4_STATEID_SIZE);

		if (unlikely(status))

			goto out_overflow;

	}

	p++;

	p = xdr_inline_decode(xdr, 8 + 4);

	if (unlikely(!p))

		goto out_overflow;

	p = xdr_decode_hyper(p, &res->count);

	res->verifier.committed = be32_to_cpup(p);

	return decode_verifier(xdr, &res->verifier.verifier);

include/linux/nfs_xdr.h

+1 −0
Original line number Diff line number Diff line
@@ -1391,6 +1391,7 @@ struct nfs42_copy_args { 
};



struct nfs42_write_res {

	nfs4_stateid		stateid;

	u64			count;

	struct nfs_writeverf	verifier;

};