linux-kernel - Off topically about Re: malicious filesystems (was Re: Re: [PATCH] Remove process freezer from suspend to RAM pathway)

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Date:	Sun, 8 Jul 2007 08:15:31 +0000 (UTC)
From:	Oleg Verych <olecom@...wer.upol.cz>
To:	linux-kernel@...r.kernel.org
Subject:  Off topically about Re: malicious filesystems (was Re: Re: [PATCH] Remove process freezer from suspend to RAM pathway)

>> > > We can just wait for all fuse requests to be serviced before
>> > > proceeding further with freeze, right?
>> > 
>> > Right.  Nice way to slow down or stop the suspend with an unprivileged
>> > process.  Avoiding that sort of DoS is one of the design goals of
>> > fuse.
>> 
>> So you want me to handle _malicious_ filesystems now?
>
> What I'd like, is a suspend, that works reliably, regardless of the
> state of any userspace filesystem, network servers and such.

And this must be called sleep, deep sleep or something like that. Because
preparing for sleeping takes place, sleeping itself is a process, life
requires. Waking up, staying all day fresh and active is the needed goal.

Thus, whole freeze/ice idea was dead-born, IMHO :)

WRT this, busy-loop _waiting_ that was called sleep, usleep or
nanosleep is another wrong-named concept. I imagine somebody after one
minute sleep :)
____

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