On 02/28, Srivatsa Vaddagiri wrote: > > On Wed, Feb 28, 2007 at 12:57:35AM +0100, Rafael J. Wysocki wrote: > > > How about other kthread_stop()s ? For example, > > > kernel/softirq.c:cpu_callback() ? > > > > They all are PF_NOFREEZE, I suppose. If we make all workqueues nonfreezable > > (as they were before), the problem won't appear. > > We can just thaw the worker thread selectively before kthread_stopping > them. This will let us freeze all worker threads (which we want to for > hotplug anyway).
I am not sure this is a good change for 2.6.21. I strongly believe it is better to change XFS so that it doesn't use create_freezeable_workqueue() as Rafael suggested. Besides, freezeable workqueues are buggy anyway in 2.6.21-rc, http://marc.theaimsgroup.com/?l=linux-kernel&m=116855740612755 This means that workqueues become non-freezeable after suspend/resume anyway (if I understand disable_nonboot_cpus() correctly). Oleg. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/