Messages in this thread |  | | | Date | Fri, 3 Oct 2003 18:55:09 -0400 | | From | Joe Korty <> | | Subject | Re: mlockall and mmap of IO devices don't mix |
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On Fri, Oct 03, 2003 at 03:23:49PM -0700, Andrew Morton wrote: > Joe Korty <joe.korty@ccur.com> wrote: > > > > 2.6.0-test6: the use of mlockall(2) in a process that has mmap(2)ed > > the registers of an IO device will hang that process uninterruptibly. > > The task runs in an infinite loop in get_user_pages(), invoking > > follow_page() forever. > > whoops. > > I think the right fix is in get_user_pages(): if the region is VM_IO then > don't call follow_page() at all. > > Something like this?
Sigh. No go; it *looks* good but my app still locks up.... Regards, Joe - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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