On Tuesday, August 20, 2013 08:22:00 AM Tejun Heo wrote: > On Tue, Aug 20, 2013 at 02:30:18PM +0200, Rafael J. Wysocki wrote: > > > So, I don't think we can simply turn TASK_UNITERRUPTIBLE to > > > TASK_KILLABLE at this point. We really need to strictly define where > > > a task can freeze before being able to do anything like this. > > > > But we could do that for user space tasks I suppose? > > Even for userland tasks, we don't know where the task is stuck at. I > think there are enough freeze points in the kernel which are in the > middle of something which can be used by userland tasks excuting some > syscall. We need to collect all those sites into well defined trap > points before doing this.
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