man/io_uring_register.2: add EMFILE errno
@@ -174,6 +174,12 @@ is non-zero or
.I arg
is non-NULL.
.TP
+.B EMFILE
+.BR IORING_REGISTER_FILES
+was specified and
+.I nr_args
+exceeds the maximum allowed number of files in a fixed file set.
+.TP
.B ENOMEM
Insufficient kernel resources are available, or the caller had a
non-zero
