From: Matthew Wilcox <willy@debian.org>
To: Chris Friesen <cfriesen@nortelnetworks.com>
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: Re: fcntl and flock wakeups not FIFO?
Date: Tue, 18 Feb 2003 01:00:54 +0000 [thread overview]
Message-ID: <20030218010054.J28902@parcelfarce.linux.theplanet.co.uk> (raw)
[cc'ing the person or list mentioned in MAINTAINERS would get you a better
response :-P]
> I've been doing some experimenting with locking on 2.4.18 and have
> noticed that if I have a number of writers waiting on a lock, they are
> not woken up in the order in which they requested the lock.
>
> Is this expected? If so, what was the reasoning for this and are there
> any patches to give FIFO wakeups?
That certainly isn't what's supposed to happen. They should get woken
up in-order. The code in 2.4.18 seems to be doing that. Are you doing
anything clever with scheduling?
--
"It's not Hollywood. War is real, war is primarily not about defeat or
victory, it is about death. I've seen thousands and thousands of dead bodies.
Do you think I want to have an academic debate on this subject?" -- Robert Fisk
next reply other threads:[~2003-02-18 0:50 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-18 1:00 Matthew Wilcox [this message]
2003-02-18 4:51 ` fcntl and flock wakeups not FIFO? Chris Friesen
2003-02-18 14:44 ` Chris Friesen
2003-02-18 15:02 ` Matthew Wilcox
2003-02-18 19:00 ` Chris Friesen
-- strict thread matches above, loose matches on Subject: below --
2003-02-17 19:11 Chris Friesen
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