From: Olga Kornievskaia <kolga@xxxxxxxxxx>
When VFS calls copy_file_range on a 4.0 mount (and when in and out
file is the same), we need to return ENOTSUPP instead of EINVAL.
Since no COPY operation is defined in 4.0, then like 3.0, it should
fallback to doing do_splice_direct().
Otherwise xfstest generic/075,091,112,263 fail.
Signed-off-by: Olga Kornievskaia <kolga@xxxxxxxxxx>
---
fs/nfs/nfs4file.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c
index 45b2322..9a222b0 100644
--- a/fs/nfs/nfs4file.c
+++ b/fs/nfs/nfs4file.c
@@ -133,6 +133,12 @@ static ssize_t nfs4_copy_file_range(struct file *file_in, loff_t pos_in,
struct file *file_out, loff_t pos_out,
size_t count, unsigned int flags)
{
+ struct nfs_server *server = NFS_SERVER(file_inode(file_in);
+ struct nfs_client *client = server->nfs_client;
+
+ if (client->cl_minorversion < 1)
+ return -EOPNOTSUPP;
+
if (file_inode(file_in) == file_inode(file_out))
return -EINVAL;
return nfs42_proc_copy(file_in, pos_in, file_out, pos_out, count);
--
1.8.3.1
