Commit 47305153 authored by Tigran Mkrtchyan's avatar Tigran Mkrtchyan Committed by Anna Schumaker
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nfs42: do not fail with EIO if ssc returns NFS4ERR_OFFLOAD_DENIED 



The NFSv4.2 server even if supports intra-SSC might prefer that for
a particular file a classic copy is performed. As returning ENOTSUPP
will clear the SSC capability of the server by the client, server
might return NFS4ERR_OFFLOAD_DENIED (well, spec talks about remote
servers there).

Update nfs42_proc_copy to handle NFS4ERR_OFFLOAD_DENIED as ENOTSUPP,
but without clearing NFS_CAP_COPY bit.

Signed-off-by: default avatarTigran Mkrtchyan <tigran.mkrtchyan@desy.de>
Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
parent 5bab56ff

fs/nfs/nfs42proc.c

+2 −1
Original line number Diff line number Diff line
@@ -460,7 +460,8 @@ ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src, 


		if (err >= 0)

			break;

		if (err == -ENOTSUPP &&

		if ((err == -ENOTSUPP ||

				err == -NFS4ERR_OFFLOAD_DENIED) &&

				nfs42_files_from_same_server(src, dst)) {

			err = -EOPNOTSUPP;

			break;