Re: [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: [linux-pm] Memory allocations in .suspend became very unreliable)

Maxim Levitsky
2010-02-01T19:52:05Z

On Sat, 2010-01-30 at 22:37 +0200, Maxim Levitsky wrote:
> On Sat, 2010-01-30 at 19:47 +0100, Rafael J. Wysocki wrote:
> > On Saturday 30 January 2010, Maxim Levitsky wrote:
> > > On Sun, 2010-01-17 at 01:38 +0100, Rafael J. Wysocki wrote:
> > > > Hi,
> > > >
> > > > I thing the snippet below is a good summary of what this is about.
> > >
> > > Any progress on that?
> >
> > Well, I'm waiting for you to report back:
> > http://patchwork.kernel.org/patch/74740/
> >
> > The patch is appended once again for convenience.
>
> Ah, sorry!
>
> I used the second version (with the locks) and it works for sure (~500
> cycles)
>
> However, as I discovered today, it takes the lock also for GFP_ATOMIC,
> and thats why I see several backtraces in the kernel log. Anyway this
> isn't important.
>
> I forgot all about this patch, and I am compiling the kernel right away.
> Will put the kernel through the hibernate loop tonight.

I did 123 hibernate cycles on my notebook. Everything is fine.
This patch very very likely is working.

Best regards,
Maxim Levitsky