On Wed 2013-02-20 13:36:19, Eric W. Biederman wrote:
> Alan Stern writes:
>
> > On Wed, 20 Feb 2013, Eric W. Biederman wrote:
> >
> >> >> Why can't the fuse filesystem freeze when there are requests pending?
> >> >
> >> > It _can_ freeze (that is, the fuse daemon can). The problem is that
> >> >
On Wed 2013-02-20 05:51:49, Eric W. Biederman wrote:
> Li Fei writes:
>
> > There is well known issue that freezing will fail in case that fuse
> > daemon is frozen firstly with some requests not handled, as the fuse
> > usage task is waiting for the response from fuse daemon and can't be
> > fro
On Wed, 20 Feb 2013, Eric W. Biederman wrote:
> > Oh, okay. But it's no different from any other filesystem in that
> > respect. Processes generally can't be frozen while they are waiting
> > for filesystem I/O to complete. In many cases they can't receive
> > signals either (they are in an un
Alan Stern writes:
> On Wed, 20 Feb 2013, Eric W. Biederman wrote:
>
>> >> Why can't the fuse filesystem freeze when there are requests pending?
>> >
>> > It _can_ freeze (that is, the fuse daemon can). The problem is that
>> > tasks _using_ the fuse filsystem can't if the daemon doesn't respond
On Wed, 20 Feb 2013, Eric W. Biederman wrote:
> >> Why can't the fuse filesystem freeze when there are requests pending?
> >
> > It _can_ freeze (that is, the fuse daemon can). The problem is that
> > tasks _using_ the fuse filsystem can't if the daemon doesn't respond.
>
> Which is what I mean
Alan Stern writes:
> On Wed, 20 Feb 2013, Eric W. Biederman wrote:
>
>> Why can't the fuse filesystem freeze when there are requests pending?
>
> It _can_ freeze (that is, the fuse daemon can). The problem is that
> tasks _using_ the fuse filsystem can't if the daemon doesn't respond.
Which is
On Wed, 20 Feb 2013, Eric W. Biederman wrote:
> Why can't the fuse filesystem freeze when there are requests pending?
It _can_ freeze (that is, the fuse daemon can). The problem is that
tasks _using_ the fuse filsystem can't if the daemon doesn't respond.
These tasks are stuck in uninterruptib
Li Fei writes:
> There is well known issue that freezing will fail in case that fuse
> daemon is frozen firstly with some requests not handled, as the fuse
> usage task is waiting for the response from fuse daemon and can't be
> frozen. To solve the issue as above, make fuse daemon frozen after
>
nux-foundation.org; v...@zeniv.linux.org.uk;
> ebied...@xmission.com; rient...@google.com; linux-kernel@vger.kernel.org;
> linux...@vger.kernel.org; Liu, Chuansheng; Wang, Biao
> Subject: Re: [PATCH] freezer: configure user space process frozen along with
> kernel threads
>
> On Wed, Feb 20,
On Wed, Feb 20, 2013 at 10:15:25AM +0800, Li Fei wrote:
>
> +#ifdef CONFIG_FREEZER
> +
> +static ssize_t freeze_late_read(struct file *file, char __user *buf,
> + size_t count, loff_t *ppos)
> +{
> + struct task_struct *task = get_proc_task(file->f_path.den
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