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From:   Olga Kornievskaia <olga.kornievskaia@gmail.com>
To:     trond.myklebust@hammerspace.com, anna.schumaker@netapp.com,
        bfields@redhat.com
Cc:     linux-nfs@vger.kernel.org
Subject: [PATCH v8 08/20] NFS: also send OFFLOAD_CANCEL to source server
Date:   Thu, 10 Oct 2019 08:46:10 -0400
Message-Id: <20191010124622.27812-9-olga.kornievskaia@gmail.com>
In-Reply-To: <20191010124622.27812-1-olga.kornievskaia@gmail.com>
References: <20191010124622.27812-1-olga.kornievskaia@gmail.com>
Sender: linux-nfs-owner@vger.kernel.org
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From: Olga Kornievskaia <kolga@netapp.com>

In case of copy is cancelled, also send OFFLOAD_CANCEL to the source
server.

Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
---
 fs/nfs/nfs42proc.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c
index 50538b9..5d833f5 100644
--- a/fs/nfs/nfs42proc.c
+++ b/fs/nfs/nfs42proc.c
@@ -206,12 +206,14 @@ static int handle_async_copy(struct nfs42_copy_res *res,
 	memcpy(&res->write_res.verifier, &copy->verf, sizeof(copy->verf));
 	status = -copy->error;
 
+out_free:
 	kfree(copy);
 	return status;
 out_cancel:
 	nfs42_do_offload_cancel_async(dst, &copy->stateid);
-	kfree(copy);
-	return status;
+	if (!nfs42_files_from_same_server(src, dst))
+		nfs42_do_offload_cancel_async(src, src_stateid);
+	goto out_free;
 }
 
 static int process_copy_commit(struct file *dst, loff_t pos_dst,
@@ -381,7 +383,8 @@ ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
 
 		if (err >= 0)
 			break;
-		if (err == -ENOTSUPP) {
+		if (err == -ENOTSUPP &&
+				nfs42_files_from_same_server(src, dst)) {
 			err = -EOPNOTSUPP;
 			break;
 		} else if (err == -EAGAIN) {
@@ -392,7 +395,8 @@ ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
 			dst_exception.retry = 1;
 			continue;
 		} else if ((err == -ESTALE ||
-				err == -NFS4ERR_OFFLOAD_DENIED) &&
+				err == -NFS4ERR_OFFLOAD_DENIED ||
+				err == -ENOTSUPP) &&
 				!nfs42_files_from_same_server(src, dst)) {
 			nfs42_do_offload_cancel_async(src, &args.src_stateid);
 			err = -EOPNOTSUPP;
-- 
1.8.3.1