> Hi,
>
> Following the "Freezing of kernel threads" discussion
> (
http://lkml.org/lkml/2007/5/12/162) I have created a patch that changes the
> freezer's behavior with respect to kernel threads. Namely, with the patch
> applied all kernel threads are nonfreezable by default (have PF_NOFREEZE set)
> and the ones that want to be frozen need to call set_freezable() (which clears
> PF_NOFREEZE for them) and try_to_freeze(). The other (nonfreezable) kernel
> threads don't need to call try_to_freeze() any more.
>
> I have removed try_to_freeze() from a handful of kernel threads that I think
> need not be freezable, but in many cases I wasn't quite sure whether or not
> it was a good idea to change the current behavior. For this reason I've added
> set_freezable() to the majority of (currently freezable) kernel threads that
> belong to device drivers and filesystems.
>
> Of course, I have removed the setting of PF_NOFREEZE from the kernel threads
> that are currently nonfreezable, since with the other changes in the patch it
> isn't necessary any more.
>
> This patch is on top of the "Freezer: Avoid freezing kernel threads prematurely"
> patch that I posted yestarday, available at
http://lkml.org/lkml/2007/5/25/199
> (updated version that applies cleanly on top of 2.6.22-rc3, is available at
>
http://www.sisk.pl/kernel/hibernation_and_suspend/2.6.22-rc3/patches/07-freezer-avoid-...).
> It has been tested on a couple of machines and doesn't seem to break anything.
>
> [As you can see there are quite a lot of files affected, so I didn't add all
> maintainers of them to the CC list. In fact, I'm not sure how to handle
> notifying them of the change, so please advise.]
