IO.copy_stream: handle ENOTSUP on copy_file_range(2)

fallback to other methods on ENOTSUP.
some RedHat kernels may return ENOTSUP on an NFS mount.
[Feature #16965]

1 files changed, 5 insertions, 0 deletions

diff --git a/io.c b/io.c
index 5e4fdd5d95..3b3ce3ff82 100644
--- a/io.c
+++ b/io.c
@@ -11312,6 +11312,11 @@ nogvl_copy_stream_sendfile(struct copy_stream_struct *stp)
 #ifdef ENOSYS
 	  case ENOSYS:
 #endif
+#ifdef ENOTSUP
+	  /* some RedHat kernels may return ENOTSUP on an NFS mount.
+	     see also: [Feature #16965] */
+	  case ENOTSUP:
+#endif
             return 0;
 	  case EAGAIN:
 #if defined(EWOULDBLOCK) && EWOULDBLOCK != EAGAIN