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    SubjectRe: 2.4.2-ac3: loop threads in D state


    On Sun, 25 Feb 2001, Jens Axboe wrote:

    > On Sun, Feb 25 2001, Nate Eldredge wrote:
    > > Nate Eldredge writes:
    > > > Kernel 2.4.2-ac3.
    > > >
    > > > FLAGS UID PID PPID PRI NI SIZE RSS WCHAN STA TTY TIME COMMAND
    > > > 40 0 425 1 -1 -20 0 0 down DW< ? 0:00 (loop0)
    > >
    > > It looks like this has been addressed in the thread "242-ac3 loop
    > > bug". Jens Axboe posted a patch, but the list archive I'm reading
    > > mangled it. Jens, could you make this patch available somewhere, or
    > > at least email me a copy? (If it's going in an upcoming -ac patch,
    > > then don't bother; I can wait until then.)
    >
    > Patch is here, I haven't checked whether Alan put it in ac4 yet (I
    > did cc him, but noone knows for sure :-).

    Jens, you have a race in lo_clr_fd() (loop-6). I've put the fixed
    variant on ftp.math.psu.edu/pub/viro/loop-S2.gz. Diff and you'll
    see - it's in the very beginning of the lo_clr_fd().
    Cheers,
    Al

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