On Thu, Jan 31, 2008 at 06:39:19PM -0800, Christoph Lameter wrote: > On Thu, 31 Jan 2008, Robin Holt wrote: > > > Jack has repeatedly pointed out needing an unregister outside the > > mmap_sem. I still don't see the benefit to not having the lock in the mm. > > I never understood why this would be needed. ->release removes the > mmu_notifier right now.
Both xpmem and GRU have means of removing their context seperate from process termination. XPMEMs is by closing the fd, I believe GRU is the same. In the case of XPMEM, we are able to acquire the mmap_sem. For GRU, I don't think it is possible, but I do not remember the exact reason. Thanks, Robin -- 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/
