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    SubjectRe: [PATCH] Fixes for RCU handling of task_struct
    On Mon, Oct 31, 2005 at 08:51:19PM -0800, Andrew Morton wrote:
    > Ingo Molnar <mingo@elte.hu> wrote:
    > >
    > > @@ -1433,7 +1485,16 @@ send_group_sigqueue(int sig, struct sigq
    > > int ret = 0;
    > >
    > > BUG_ON(!(q->flags & SIGQUEUE_PREALLOC));
    > > - read_lock(&tasklist_lock);
    > > +
    > > + while(!read_trylock(&tasklist_lock)) {
    > > + if (!p->sighand)
    > > + return -1;
    > > + cpu_relax();
    > > + }
    >
    > This looks kind of ugly and quite unobvious.
    >
    > What's going on there?

    This was discussed in the following thread:

    http://marc.theaimsgroup.com/?l=linux-kernel&m=112756875713008&w=2

    Looks like its author asked for it to be withdrawn in favor of Roland's
    "[PATCH] Call exit_itimers from do_exit, not __exit_signal" patch:

    http://marc.theaimsgroup.com/?l=linux-kernel&m=113008567108608&w=2

    My guess is that "Roland" is "Roland McGrath", but I cannot find the
    referenced patch. Oleg, any enlightenment?

    Thanx, Paul
    -
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