On Thu, Apr 21, 2022 at 11:44:23PM +0000, Yosry Ahmed wrote: > From: Shakeel Butt <shakeelb@xxxxxxxxxx> [...] > > [yosryahmed@xxxxxxxxxx: refreshed to current master, updated commit > message based on recent discussions and use cases] > Signed-off-by: Shakeel Butt <shakeelb@xxxxxxxxxx> > Signed-off-by: Yosry Ahmed <yosryahmed@xxxxxxxxxx> You should add "Co-developed-by" tag for yourself here. > Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx> > Acked-by: Michal Hocko <mhocko@xxxxxxxx> > Acked-by: Wei Xu <weixugc@xxxxxxxxxx> > Acked-by: Roman Gushchin <roman.gushchin@xxxxxxxxx> > --- > [...] > +static ssize_t memory_reclaim(struct kernfs_open_file *of, char *buf, > + size_t nbytes, loff_t off) > +{ > + struct mem_cgroup *memcg = mem_cgroup_from_css(of_css(of)); > + unsigned int nr_retries = MAX_RECLAIM_RETRIES; > + unsigned long nr_to_reclaim, nr_reclaimed = 0; > + int err; > + > + buf = strstrip(buf); > + err = page_counter_memparse(buf, "", &nr_to_reclaim); > + if (err) > + return err; > + > + while (nr_reclaimed < nr_to_reclaim) { > + unsigned long reclaimed; > + > + if (signal_pending(current)) > + return -EINTR; > + > + /* This is the final attempt, drain percpu lru caches in the Fix the comment format. "/*" should be on its own line. > + * hope of introducing more evictable pages for > + * try_to_free_mem_cgroup_pages(). > + */ No need to send a new version if Andrew can fix these in the mm tree.