Re: [RFC][PATCH -mm][Experimental] swsusp: freeze userspace processes first

Pavel Machek
2006-02-01T10:55:05Z

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Hi!

> This is an experimantal patch aimed at the "unable to freeze processes under
> load" problem.
>
> On my box the 2.6.16-rc1-mm4 kernel with this patch applied survives the
> "dd if=/dev/hda of=/dev/null" test.

What filesystem? ext2 vs. ext3 is very different. I can fix ext2 by
just upping the timeout. ext3 is harder, because of the journalling
thread. Maybe I'll take the sledgehammer approach and just freeze all
the user tasks first... I tried to do the "small" approach and just
fix the journalling code...

I'm not sure what problem the usermodehelper code is trying to
solve... why are usermodehelpers special?
Pavel

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Thanks, Sharp!