On Wed, 14 Mar 2007, Linus Torvalds wrote: > On Wed, 14 Mar 2007, Davide Libenzi wrote: > > > > > > That won't work. aio_complete() is supposed to be irq safe. > > > > Can you point me to a kernel path that ends up calling aio_complete() in a > > do-not-sleep mode? > > All of them. > > It's called from dio_bio_end_aio(), which is the bi_end_io function for an > AIO action. Which in turn is called at IO completion time. > > Which is basically _always_ interrupt context. > > So you cannot sleep. It's not about holding spinlocks (which it might well > do as well). It's about a much more fundamental issue: you can only sleep > in process context, not from interrupts.
Ack! Gotcha. Sigh! :) - Davide - 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/
