Btw. I do not see Rafael involved. Maybe he can add some insight to this. Please note that the patch in question is http://lkml.kernel.org/r/20210208084920.2884-9-rppt@xxxxxxxxxx and the full series is http://lkml.kernel.org/r/20210208084920.2884-1-rppt@xxxxxxxxxx On Mon 08-02-21 13:17:26, Michal Hocko wrote: > On Mon 08-02-21 12:26:31, David Hildenbrand wrote: > [...] > > My F33 system happily hibernates to disk, even with an application that > > succeeded in din doing an mlockall(). > > > > And it somewhat makes sense. Even my freshly-booted, idle F33 has > > > > $ cat /proc/meminfo | grep lock > > Mlocked: 4860 kB > > > > So, stopping to hibernate with mlocked memory would essentially prohibit any > > modern Linux distro to hibernate ever. > > My system seems to be completely fine without mlocked memory. It would > be interesting to see who mlocks memory on your system and check whether > the expectated mlock semantic really works for those. This should be > documented at least. > -- > Michal Hocko > SUSE Labs -- Michal Hocko SUSE Labs
