On Fri, 8 Jul 2011 18:06:07 +0930
Christopher Yeoh [off-list ref] 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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