Re: [RESEND] Cross Memory Attach v3

[Andrew Morton <akpm@linux-foundation.org>]

On Fri, 8 Jul 2011 18:06:07 +0930
Christopher Yeoh <cyeoh@au1.ibm.com> wrote:

> +static ssize_t process_vm_rw(pid_t pid, const struct iovec *lvec,
> +			     unsigned long liovcnt,
> +			     const struct iovec *rvec,
> +			     unsigned long riovcnt,
> +			     unsigned long flags, int vm_write)
> +{
>
> ...
>
> +	if (!mm || (task->flags & PF_KTHREAD)) {

Can a PF_KTHREAD thread have a non-zero ->mm?
> +		task_unlock(task);
> +		rc = -EINVAL;
> +		goto put_task_struct;
> +	}

anyway, grumble.

Please resend, cc'ing linux-kernel.

Please also cc linux-man@vger.kernel.org and describe (within the
changelog context) the plan for getting the manpages written.

Please also cc linux-arch@vger.kernel.org and provide (within the
changelog context) arch developers with the documentation and test code
which will enable them to implement this and to verify it with minimal
effort.

Thanks.

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