On 12/2/23 09:56, Waiman Long wrote: > > On 12/1/23 20:57, Bagas Sanjaya wrote: >>> -void mem_cgroup_flush_stats(void) >>> +/* >>> + * mem_cgroup_flush_stats - flush the stats of a memory cgroup subtree >>> + * @memcg: root of the subtree to flush >>> + * >>> + * Flushing is serialized by the underlying global rstat lock. There is also a >>> + * minimum amount of work to be done even if there are no stat updates to flush. >>> + * Hence, we only flush the stats if the updates delta exceeds a threshold. This >>> + * avoids unnecessary work and contention on the underlying lock. >>> + */ >> What is global rstat lock? > > It is the cgroup_rstat_lock in kernel/cgroup/rstat.c. > OK, I see that. Thanks! -- An old man doll... just what I always wanted! - Clara
