Re: [PATCH RFC 2/2] mm, sched: trigger might_sleep() in might_fault() when pagefaults are disabled

From: Michael S. Tsirkin
Date: Thu Nov 27 2014 - 13:27:42 EST


On Thu, Nov 27, 2014 at 07:08:42PM +0100, David Hildenbrand wrote:
> > > > -
> > > > - __might_sleep(__FILE__, __LINE__, 0);
> > > > + if (unlikely(!pagefault_disabled()))
> > > > + __might_sleep(__FILE__, __LINE__, 0);
> > > >
> >
> > Same here: so maybe make might_fault a wrapper
> > around __might_fault as well.
>
> Yes, I also noticed that. It was part of the original code.
> For now I kept this revert as close as possible to
> the original patch.
>
> Better fix this in an add-on patch? Or directly in this commit?

IMHO it's up to you really.

> At least for
> the in-header function it is easy to fix in this patch.
>
> Thanks!

Right.
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