Messages in this thread | | | Subject | Re: Bug: fio traps into kernel without exiting because futex has a deadloop | From | "Zhang, Yanmin" <> | Date | Tue, 16 Jun 2009 11:16:35 +0800 |
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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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