Hi, On the recent LSF Andrea presented his userfault-fd patches and I had shown some issues that appear in usage scenarios when the monitor task and mm task do not cooperate to each other on VM changes (and fork()-s). Here's the implementation of the extended uffd API that would help us to address those issues. As proof of concept I've implemented only fix for fork() case, but I also plan to add the mremap() and exit() notifications, both are also required for such non-cooperative usage. More details about the extension itself is in patch #2 and the fork() notification description is in patch #3. Comments and suggestion are warmly welcome :) Andrea, what's the best way to go on with the patches -- would you prefer to include them in your git tree or should I instead continue with them on my own, re-sending them when required? Either way would be OK for me. Thanks, Pavel -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>