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Message-Id: <200611012127.17943.rjw@sisk.pl>
Date: Wed, 1 Nov 2006 21:27:17 +0100
From: "Rafael J. Wysocki" <rjw@...k.pl>
To: Andrew Morton <akpm@...l.org>
Cc: Pavel Machek <pavel@....cz>, LKML <linux-kernel@...r.kernel.org>,
Nigel Cunningham <ncunningham@...uxmail.org>,
Christoph Hellwig <hch@...radead.org>
Subject: Re: [PATCH -mm] swsusp: Freeze filesystems during suspend (rev. 2)
On Wednesday, 1 November 2006 20:45, Andrew Morton wrote:
> On Wed, 1 Nov 2006 18:53:07 +0100
> "Rafael J. Wysocki" <rjw@...k.pl> wrote:
>
> > +void thaw_processes(void)
> > +{
> > + printk("Restarting tasks ... ");
> > + __thaw_tasks(FREEZER_KERNEL_THREADS);
> > + thaw_filesystems();
> > + __thaw_tasks(FREEZER_USER_SPACE);
> > + schedule();
> > + printk("done.\n");
> > +}
> >
> > - read_unlock(&tasklist_lock);
> > +void thaw_kernel_threads(void)
> > +{
> > + printk("Restarting kernel threads ... ");
> > + __thaw_tasks(FREEZER_KERNEL_THREADS);
> > schedule();
> > printk("done.\n");
> > }
>
> what do these random-looking schedule()s do??
My understanding is that they allow the thawed tasks to actually exit
the refrigerator, because __thaw_tasks() only changes their states.
-
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