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    SubjectRe: [RFC][PATCH 3/5] add /dev/mem_notify device
    Hi Kame

    > > + if (pressure) {
    > > + nr_wakeup = max_t(int, atomic_read(&nr_watcher_task)>>4, 100);
    > > + atomic_long_set(&last_mem_notify, jiffies);
    > > + wake_up_locked_nr(&mem_wait, nr_wakeup);
    > > + }
    > What is this for ? and Why ?
    > Are there too many waiters ?

    my intent is for avoid thundering herd.
    100 is heuristic value.

    and too many wakeup cause too much memory freed.
    I don't want it.

    of course, if any problem happened, I will change.
    Do you dislike it?




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