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SubjectRe: Bug: fio traps into kernel without exiting because futex has a deadloop
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On Mon, 2009-06-15 at 09:57 +0200, Thomas Gleixner wrote:
> On Mon, 15 Jun 2009, Zhang, Yanmin wrote:
> > > + ret = get_user_pages_fast(addr, 1, 1, &page);
> >
> > I checked function get_user_pages_fast. It might return negative, 0, or
> > positive value. 0 means it doesn't pin any page. So why does below statement
> > use (!ret) to put_page?
>
> Hmm, darn. You are right. It needs to be (ret > 0)
I tested (ret > 0). It does work and I didn't find memory leak.


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