[PATCH 4.9 31/66] NFSv4: Fix v4.0/v4.1 SEEK_DATA return -ENOTSUPP when set NFS_V4_2 config

From: Zhang Xiaoxu <redacted>

commit e67afa7ee4a59584d7253e45d7f63b9528819a13 upstream.

Since commit bdcc2cd14e4e ("NFSv4.2: handle NFS-specific llseek errors"),
nfs42_proc_llseek would return -EOPNOTSUPP rather than -ENOTSUPP when
SEEK_DATA on NFSv4.0/v4.1.

This will lead xfstests generic/285 not run on NFSv4.0/v4.1 when set the
CONFIG_NFS_V4_2, rather than run failed.

Fixes: bdcc2cd14e4e ("NFSv4.2: handle NFS-specific llseek errors")
Cc: <stable.vger.kernel.org> # 4.2
Signed-off-by: Zhang Xiaoxu <redacted>
Signed-off-by: Trond Myklebust <redacted>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/nfs/nfs4file.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/nfs/nfs4file.c
+++ b/fs/nfs/nfs4file.c

@@ -147,7 +147,7 @@ static loff_t nfs4_file_llseek(struct fi
 	case SEEK_HOLE:
 	case SEEK_DATA:
 		ret = nfs42_proc_llseek(filep, offset, whence);
-		if (ret != -ENOTSUPP)
+		if (ret != -EOPNOTSUPP)
 			return ret;
 	default:
 		return nfs_file_llseek(filep, offset, whence);