Re: [PATCH 2/6] vfs: vfs: Define new syscalls preadv2,pwritev2

On Mon, Apr 18, 2016 at 02:51:50PM +0100, Michael Kerrisk (man-pages) wrote:

Thanks. I applied the patch, but I see one point where the doc
and code differ, and I suspect that the code needs to be fixed.
See below.

quoted

 .TP
 .B EINVAL
 The vector count \fIiovcnt\fP is less than zero or greater than the
-permitted maximum.
+permitted maximum. Or, an unknown flag is specified in \fIflags\fP.

In the case described in the last sentence, the code currently appears
to be returning EOPNOTSUPP. EINVAL is more usual here, so I think the
code needs adjusting. Your thoughts?

I'd rather update the man page - EOPNOTSUPP is a much more descriptive
error code for this case.  I'll send you a patch.