On Thu, 31 Jan 2008, Jack Steiner wrote: > I currently unlink the mmu_notifier when the last GRU mapping is closed. For > example, if a user does a: > > gru_create_context(); > ... > gru_destroy_context(); > > the mmu_notifier is unlinked and all task tables allocated > by the driver are freed. Are you suggesting that I leave tables > allocated until the task terminates??
You are in user space and calling into the kernel somehow. The mmap_sem is not held at that point so its no trouble to use the unregister function. After that wait for rcu and then free your tables. > I assumed that I would need to use call_rcu() or synchronize_rcu() > before the table is actually freed. That's still on my TODO list. Right. -- 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/
