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From: "J . A . Magallon" <jamagallon@able.es>
To: Manfred Spraul <manfred@colorfullife.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] new version of singlecopy pipe
Date: Sat, 12 May 2001 02:07:42 +0200	[thread overview]
Message-ID: <20010512020742.A1054@werewolf.able.es> (raw)
In-Reply-To: <3AFC36BA.B71FC470@colorfullife.com>
In-Reply-To: <3AFC36BA.B71FC470@colorfullife.com>; from manfred@colorfullife.com on Fri, May 11, 2001 at 21:00:10 +0200


On 05.11 Manfred Spraul wrote:
> 
> Please test it.
> The kernel space part should be ok, but I know that the
> patch can cause deadlocks with buggy user space apps.
> 

I tried your patch on 2.4.4-ac8, and something strange happens.
Untarring linux-2.4.4 takes a little time, disk light flashes,
but no files appear on the disk (just 'Makefile', as you will see below).
Doing a separate gunzip - tar xf works fine:

werewolf:~/soft/kernel# gtar zxf linux-2.4.4.tar.gz
werewolf:~/soft/kernel# ls linux-2.4.4
Makefile
werewolf:~/soft/kernel# sync
werewolf:~/soft/kernel# ls linux-2.4.4
Makefile
werewolf:~/soft/kernel# gunzip linux-2.4.4.tar.gz
werewolf:~/soft/kernel# tar xf linux-2.4.4.tar
werewolf:~/soft/kernel# ls linux-2.4.4
COPYING         MAINTAINERS  REPORTING-BUGS  drivers/  init/    lib/  scripts/
CREDITS         Makefile     Rules.make      fs/       ipc/     mm/
Documentation/  README       arch/           include/  kernel/  net/


Some buffers get not flushed ???

If they can interact with yours, I have also applied the patches for
- cache-align from Andrea (I suppose it has nothing to do with yours)
- context-switches reduction by Mike Galbraith (perhaps ?)
and a silly couple more (CC:=$(CC) in Makefile, missing return in aic7xxx).

-- 
J.A. Magallon                           #  Let the source be with you...        
mailto:jamagallon@able.es
Linux Mandrake release 8.1 (Cooker) for i586
Linux werewolf 2.4.4-ac8 #1 SMP Sat May 12 01:16:37 CEST 2001 i686


  reply	other threads:[~2001-05-12  0:08 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-05-11 19:00 [PATCH] new version of singlecopy pipe Manfred Spraul
2001-05-12  0:07 ` J . A . Magallon [this message]
2001-05-12  0:19   ` J . A . Magallon
2001-05-12  0:25   ` David S. Miller
2001-05-12  7:50     ` J . A . Magallon
2001-05-12  8:23       ` David S. Miller
2001-05-17 20:59         ` Manfred Spraul
2001-05-18 11:08           ` J . A . Magallon
2001-05-12  8:21   ` Manfred Spraul

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