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    SubjectRe: [Ksummit-2010-discuss] checkpoint-restart: naked patch
    On Fri, Nov 19, 2010 at 6:50 PM, Tejun Heo <> wrote:
    > On 11/19/2010 05:38 PM, Alexey Dobriyan wrote:
    >> On Fri, Nov 19, 2010 at 6:32 PM, Tejun Heo <> wrote:
    >>> On 11/19/2010 05:27 PM, Alexey Dobriyan wrote:
    >>>> On Fri, Nov 19, 2010 at 6:19 PM, Tejun Heo <> wrote:
    >>>>>> The paragon of absurdity is struct task_struct::did_exec .
    >>>>> Yeah, then go and figure how to do that in a way which would be useful
    >>>>> for other purposes too instead of trying to shove the whole
    >>>>> checkpointer inside the kernel.  It sure would be harder but hey
    >>>>> that's the way it is.
    >>>> System call for one bit? This is ridiculous.
    >>> Why not just a flag in proc entry?  It's a frigging single bit.
    >> Because /proc/*/did_exec useless to anyone but C/R (even for reading!).
    > I don't think you'll need a full file.  Just shove it in status or
    > somewhere.  Your argument is completely absurd.  So, because exporting
    > single bit is so horrible to everyone else, you want to shove the
    > whole frigging checkpointer inside the kernel?
    >> Because code is much simpler:
    >>     tsk->did_exec = !!tsk_img->did_exec;
    >> +
    >>     __u8 did_exec;
    > Sigh, yeah, except for the horror show to create tsk_img.

    task_struct image work is common for both userspace C/R and in-kernel.
    You _have_ to define it.
    Simpler code is only first line.

    > Your "paragon of absurdity" is did_exec which is only ever used
    > to decide whether setpgid() should fail with -EACCES, seriously?
    > Here's a thought.  Ignore it for now and concentrate on more
    > relevant problems.

    You're so newjerseyly now.
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      Last update: 2010-11-19 17:59    [W:0.042 / U:0.728 seconds]
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