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    SubjectRe: [PATCH 4/6] lguest don't signal like crazy, use LHREQ_BREAK command
    On Wed, Jun 06, 2007 at 10:07:46AM +1000, Rusty Russell wrote:
    > On Tue, 2007-06-05 at 10:34 -0500, Matt Mackall wrote:
    > > On Wed, Jun 06, 2007 at 01:00:06AM +1000, Rusty Russell wrote:
    > > > We currently use a "waker" process: a child of the launcher which
    > > > selects() on the incoming file descriptors. It sends a SIGUSR1 to the
    > > > launcher whenever select() returns to kick the launcher out of the
    > > > kernel.
    > >
    > > If I break out of lguest with three ctrl-Cs, this leaves one of the
    > > lguest processes running with /dev/lguest held open.
    >
    > This patch, or the previous version I sent? The previous one had this
    > issue, so this one takes some care to kill the waker and I haven't seen
    > it since:
    >
    > /* Make sure waker is not blocked in BREAK */
    > u32 args[] = { LHREQ_BREAK, 0 };
    > close(waker_fd);
    > write(fd, args, sizeof(args));
    > exit(2);

    Probably the one you sent earlier.

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