Commit e58691ea authored by Chuck Lever's avatar Chuck Lever
Browse files

Revert "NFSD: Force all NFSv4.2 COPY requests to be synchronous" 



In the past several kernel releases, we've made NFSv4.2 async copy
reliable:
 - The Linux NFS client and server now both implement and use the
   NFSv4.2 OFFLOAD_STATUS operation
 - The Linux NFS server keeps copy stateids around longer
 - The Linux NFS client and server now both implement referring call
   lists

And resilient against DoS:
 - The Linux NFS server limits the number of concurrent async copy
   operations

Reviewed-by: default avatarJeff Layton <jlayton@kernel.org>
Signed-off-by: default avatarChuck Lever <chuck.lever@oracle.com>
parent e609e386

fs/nfsd/nfs4proc.c

+0 −7
Original line number Diff line number Diff line
@@ -1917,13 +1917,6 @@ nfsd4_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 
	struct nfsd42_write_res *result;

	__be32 status;



	/*

	 * Currently, async COPY is not reliable. Force all COPY

	 * requests to be synchronous to avoid client application

	 * hangs waiting for COPY completion.

	 */

	nfsd4_copy_set_sync(copy, true);



	result = &copy->cp_res;

	nfsd_copy_write_verifier((__be32 *)&result->wr_verifier.data, nn);