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From: "H. Peter Anvin" <hpa@zytor.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Michael Tokarev <mjt@tls.msk.ru>,
	Alan Cox <alan@lxorguk.ukuu.org.uk>, Ian Kent <raven@themaw.net>,
	Thomas Meyer <thomas@m3y3r.de>,
	autofs@vger.kernel.org
Subject: Re: autofs: make the autofsv5 packet file descriptor use a packetized pipe
Date: Sun, 29 Apr 2012 17:35:19 -0700	[thread overview]
Message-ID: <4F9DDE47.5060008@zytor.com> (raw)
In-Reply-To: <CA+55aFwGZm4+rdJ+xArhsVJ8P5gH3xxCfuoHibotr0Sik484=w@mail.gmail.com>

On 04/29/2012 05:33 PM, Linus Torvalds wrote:
> 
> The problem is only if it starts out by reading just the header of the
> packet, and then reads the rest of the packet as a second read. *THAT*
> won't work with the packetized pipe approach, because reading the
> header of the packet will then discard the rest of it, and the second
> read would try to read the *next* packet (which under many normal
> loads won't even exist, of course).
> 

Which is funny/sad, because that's actually the intended way the
interface is meant to work.

	-hpa


  reply	other threads:[~2012-04-30  0:35 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20120429205429.63CCD7C0064@ra.kernel.org>
2012-04-30  0:15 ` autofs: make the autofsv5 packet file descriptor use a packetized pipe H. Peter Anvin
2012-04-30  0:25   ` Linus Torvalds
2012-04-30  0:28     ` H. Peter Anvin
2012-04-30  0:33       ` Linus Torvalds
2012-04-30  0:35         ` H. Peter Anvin [this message]
2012-04-30  0:43           ` Linus Torvalds
2012-04-30  0:45             ` H. Peter Anvin
2012-04-30  1:29             ` Ian Kent
2012-04-30  1:56               ` Linus Torvalds
2012-04-30  5:57                 ` Ian Kent
2012-04-30  0:30     ` H. Peter Anvin
2012-04-30  0:37       ` Linus Torvalds
2012-04-30 20:03       ` H. Peter Anvin
2012-04-30 20:11         ` Linus Torvalds
2012-04-30 20:14           ` H. Peter Anvin
2012-04-30  6:27   ` Michael Tokarev
2012-04-30  6:43     ` Michael Tokarev
2012-04-30  6:48       ` H. Peter Anvin
2012-04-30  6:55       ` Ian Kent

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