On Wed, 23 Apr 2008, Andrea Arcangeli wrote: > On Wed, Apr 23, 2008 at 11:09:35AM -0700, Christoph Lameter wrote: > > Why is there still the hlist stuff being used for the mmu notifier list? > > And why is this still unsafe? > > What's the problem with hlist, it saves 8 bytes for each mm_struct, > you should be using it too instead of list.
list heads in mm_struct and in the mmu_notifier struct seemed to be more consistent. We have no hash list after all. > > > There are cases in which you do not take the reverse map locks or mmap_sem > > while traversing the notifier list? > > There aren't. There is a potential issue in move_ptes where you call invalidate_range_end after dropping i_mmap_sem whereas my patches did the opposite. Mmap_sem saves you there? _______________________________________________ general mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
