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    From
    SubjectRe: kupdate & laptop's
    Date
    > 
    > kupdated honours SIGSTOP/SIGCONT so you can control it on a mobile system
    >
    Thanks for your quick reply.

    OK, I tried to stop it with 'kill -STOP', but it didn't. So I've added
    some printk() to fs/buffer.c to verify this (see below). It never
    goes in the 'else' block, and I don't get the 'kupdate() stopped'
    message. To make sure I tried all signals (1..29) but no luck. So
    something else must be wrong.

    Cheers, Peter.

    int kupdate(void * unused)
    ...
    for (;;) {
    interval = bdf_prm.b_un.interval;
    if (interval)
    {
    printk("kupdate() interval %d\n", interval);
    tsk->state = TASK_INTERRUPTIBLE;
    schedule_timeout(interval);
    printk("kupdate() returned from schedule_timeout\n");
    }
    else
    {
    tsk->state = TASK_STOPPED;
    printk("kupdate() stopped\n");
    schedule(); /* wait for SIGCONT */
    }
    printk("kupdate() activated...\n");
    sync_old_buffers();
    }
    }

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