linux-kernel - Re: PROPOSAL: extend pipe() to support NULL argument.

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Message-ID: <412e6f7f0907021745k41e5c7aeua35200d5047c1aa@mail.gmail.com>
Date:	Fri, 3 Jul 2009 08:45:47 +0800
From:	Changli Gao <xiaosuo@...il.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	Amerigo Wang <xiyou.wangcong@...il.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: PROPOSAL: extend pipe() to support NULL argument.

On Thu, Jul 2, 2009 at 6:42 PM, Alan Cox<alan@...rguk.ukuu.org.uk> wrote:
> On Thu, 2 Jul 2009 17:18:49 +0800
> Changli Gao <xiaosuo@...il.com> wrote:
>
>> On Thu, Jul 2, 2009 at 5:13 PM, Amerigo Wang<xiyou.wangcong@...il.com> wrote:
>> > On Thu, Jul 02, 2009 at 03:36:41PM +0800, Changli Gao wrote:
>> >
>> > Why? Why do you need this feature?
>> >
>> Are you familiar with splice() and tee()? They both use pipes as kernel buffers.
>
> And are being used quite happily with the pipe() call. So what is the
> problem ?
>
No problem! But I just want to save a fd. As one RW pipe fd is enough
for splicing.



-- 
Regards，
Changli Gao(xiaosuo@...il.com)
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