On Thu, 28 Feb 2008, Andrea Arcangeli wrote: > > 3. Keep the refcount elevated until pages are freed in another execution > > context. > > Page refcount is not enough (the mmu_notifier_release will run in > another cpu the moment after i_mmap_lock is unlocked) but mm_users may > prevent us to change the i_mmap_lock to a mutex, but it'll slowdown > truncate as it'll have to drop the lock and restart the radix tree > walk every time so a change like this better fits as a separate > CONFIG_XPMEM IMHO.
Erm. This would also be needed by RDMA etc. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
