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From: Pavel Machek <pavel@ucw.cz>
To: Nigel Cunningham <ncunningham@cyclades.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Freezer Patches.
Date: Thu, 2 Jun 2005 09:31:19 +0200	[thread overview]
Message-ID: <20050602073119.GC1841@elf.ucw.cz> (raw)
In-Reply-To: <1117697187.10888.138.camel@localhost>

Hi!

> > If sys_sync() is not working, *fix sys_sync()*. [BTW I see that
> > problem before and I think it is being worked on.] I'm *not* going to
> > work around it in refrigerator.
> 
> I'm not saying sys_sync is broken. I _am_ saying that if you have
> processes submitting I/O while you're trying to sync, syncing will take
> longer and you may well still end up with dirty buffers at the end. On
> top of this, you may think freezing has failed because processes don't
> enter the refrigerator within your timelimit (assuming you have
> one).

Then simple launch sys_sync(), let it finish, *then* do
refrigeration. That way sys_sync() does not count to the timelimit.

Now, sys_sync() takes too long on some setups. That needs to be fixed,
anyway; users don't like to wait for 15 minutes after typing
"sync". Do not work around it in refrigerator.
								Pavel

  reply	other threads:[~2005-06-02  7:31 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-06-01 12:33 Freezer Patches Nigel Cunningham
2005-06-01 13:02 ` Pavel Machek
2005-06-01 22:02   ` Benjamin Herrenschmidt
2005-06-01 22:13     ` Nigel Cunningham
2005-06-01 22:23       ` Benjamin Herrenschmidt
2005-06-01 22:08   ` Nigel Cunningham
2005-06-01 22:31     ` Pavel Machek
2005-06-01 22:45       ` Benjamin Herrenschmidt
2005-06-01 23:02         ` Pavel Machek
2005-06-02  0:35           ` Benjamin Herrenschmidt
2005-06-02  1:46             ` Nigel Cunningham
2005-06-02  1:49               ` Benjamin Herrenschmidt
2005-06-02  1:45           ` Nigel Cunningham
2005-06-02  1:48             ` Benjamin Herrenschmidt
2005-06-02  7:14             ` Pavel Machek
2005-06-02  7:26               ` Nigel Cunningham
2005-06-02  7:31                 ` Pavel Machek [this message]
2005-06-02  7:36                   ` Benjamin Herrenschmidt
2005-06-02  8:18                     ` Nigel Cunningham
2005-06-02 21:47                       ` Pavel Machek

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