On Thursday 11 April 2013 18:03:09 Ming Lei wrote: > On Thu, Apr 11, 2013 at 5:53 PM, Oliver Neukum <oliver@xxxxxxxxxx> wrote: > > On Thursday 11 April 2013 16:09:16 Ming Lei wrote: > >> > >> Could you explain why work queue need GFP_NOIO? > > > > Your fix for the memory allocation depends on it happening in the same > > context. If you execute code on a work queue this happens in the context > > of a kernel thread. > > I understand the interface might be called from workqueue, and my question > is why GFP_NOIO is needed in the work queue context. Generally speaking, > GFP_KERNEL is enough for work queue context. > > As we discussed before, GFP_NOIO is required in runtime resume context > and reset context, and the two contexts have been addressed automatically. > So looks you didn't answer my question, :-) Sorry, I misunderstood. Task A Task B queue queue work request a reset allocate memory and block cancel the work shit happened Regards Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
