> > Yes, but when does the fork actually happen? > Looking further at this, now I'm confused as to why it doesn't happen _all_ the time.
I think this has pretty much always been wrong, just now we actually notice it? Basically, when we create a new thread (really just mm I think), we say the first thing that has to run there is fork_handler(), which initialises things the first time around. This calls force_flush_all() But of course it's called from __schedule(), which has preemption/interrupts disabled. So you can't do mmap_read_lock()? But I'm confused as to why it doesn't seem happen all the time? johannes _______________________________________________ linux-um mailing list linux-um@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-um
