On Fri, Jun 29, 2018 at 03:25:42PM -0400, Josef Bacik wrote: > From: Josef Bacik <jbacik@xxxxxx> > > We noticed in testing we'd get pretty bad latency stalls under heavy > pressure because read ahead would try to do its thing while the cgroup > was under severe pressure. If we're under this much pressure we want to > do as little IO as possible so we can still make progress on real work > if we're a throttled cgroup, so just skip readahead if our group is > under pressure. > > Signed-off-by: Josef Bacik <jbacik@xxxxxx> Acked-by: Tejun Heo <tj@xxxxxxxxxx> Thanks. -- tejun
