From a2cf88983114837a0673a00f76d12232d1606e07 Mon Sep 17 00:00:00 2001
From: Cyril Hrubis <metan@ucw.cz>
Date: Wed, 25 Jun 2014 16:12:35 +0200
Subject: [PATCH] vmsplice.2: vmsplice() does not fail when nr_segs==0

This nr_segs==0 case is no-op; the call succeeds and no
EINVAL error is returned.

See fs/splice.c vmsplice syscall which contains:

        if (unlikely(nr_segs > UIO_MAXIOV))
                return -EINVAL;
        else if (unlikely(!nr_segs))
                return 0;

And looking at the git log suggests that the code was always thus.

Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
---
 man2/vmsplice.2 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/man2/vmsplice.2 b/man2/vmsplice.2
index b184e27b5..ca1221ccf 100644
--- a/man2/vmsplice.2
+++ b/man2/vmsplice.2
@@ -133,7 +133,7 @@ either not valid, or doesn't refer to a pipe.
 .TP
 .B EINVAL
 .I nr_segs
-is 0 or greater than
+is greater than
 .BR IOV_MAX ;
 or memory not aligned if
 .B SPLICE_F_GIFT