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From: Andrew Morton <akpm@osdl.org>
To: Pavel Machek <pavel@ucw.cz>
Cc: petero2@telia.com, linux-kernel@vger.kernel.org
Subject: Re: Software suspend testing in 2.6.0-test1
Date: Fri, 18 Jul 2003 12:37:28 -0700	[thread overview]
Message-ID: <20030718123728.1ff12b51.akpm@osdl.org> (raw)
In-Reply-To: <20030718175045.GA195@elf.ucw.cz>

Pavel Machek <pavel@ucw.cz> wrote:
>
> > It would be much better to freeze kernel threads _after_ doing the big
> > memory shrink.
> 
> I wanted to avoid that: we do want user threads refrigerated at that
> point so that we know noone is allocating memory as we are trying to
> do memory shrink.

	freeze(threads which have task->mm)
	shrink_memory();
	freeze(threads which have !task->mm)

That's pretty simple.

> I'd like to avoid having refrigerator run in two phases....

The whole thing can deadlock without kernel thread services.


  parent reply	other threads:[~2003-07-18 19:30 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-07-17 19:46 Software suspend testing in 2.6.0-test1 Peter Osterlund
2003-07-17 20:00 ` Pavel Machek
2003-07-17 20:09   ` Andrew Morton
2003-07-18  9:59     ` Peter Osterlund
2003-07-18 10:24       ` Andrew Morton
2003-07-18 15:22         ` Pavel Machek
2003-07-18 15:55           ` Peter Osterlund
2003-07-18 16:45             ` Andrew Morton
2003-07-18 17:50               ` Pavel Machek
2003-07-18 18:02                 ` Patrick Mochel
2003-07-18 18:04                   ` Pavel Machek
2003-07-18 21:05                     ` Nigel Cunningham
2003-07-18 19:37                 ` Andrew Morton [this message]
2003-07-18 19:58               ` Peter Osterlund
2003-07-18 20:15                 ` Andrew Morton
2003-07-18 22:13                   ` Pavel Machek
2003-07-20  0:22                   ` Peter Osterlund
2003-07-20  1:01                     ` Andrew Morton
2003-07-20  7:45                       ` Peter Osterlund
2003-07-18 21:05               ` Nigel Cunningham
2003-07-21 10:00   ` Peter Osterlund
2003-07-21 12:58     ` Pavel Machek
2003-07-21 14:36       ` Peter Osterlund
2003-07-21 21:28         ` Pavel Machek
2003-07-21 23:46           ` Peter Osterlund
2003-07-22 11:04             ` Pavel Machek

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