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

From: KOSAKI Motohiro
Date: Thu Jan 21 2010 - 20:42:26 EST

> > > Probably we have multiple option. but I don't think GFP_NOIO is good
> > > option. It assume the system have lots non-dirty cache memory and it isn't
> > > guranteed.
> >
> > Basically nothing is guaranteed in this case. However, does it actually make
> > things _worse_?
> Hmm..
> Do you mean we don't need to prevent accidental suspend failure?
> Perhaps, I did misunderstand your intention. If you think your patch solve
> this this issue, I still disagree. but If you think your patch mitigate
> the pain of this issue, I agree it. I don't have any reason to oppose your
> first patch.

One question. Have anyone tested Rafael's $subject patch?
Please post test result. if the issue disapper by the patch, we can
suppose the slowness is caused by i/o layer.

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