On Thu 15-04-21 11:13:16, Muchun Song wrote:
> On Wed, Apr 14, 2021 at 6:15 PM Michal Hocko wrote:
> >
> > On Wed 14-04-21 18:04:35, Muchun Song wrote:
> > > On Wed, Apr 14, 2021 at 5:24 PM Michal Hocko wrote:
> > > >
> > > > On Tue 13-04-21 14:51:48, Muchun Song wrote:
> > > > > When mm is
On Wed, Apr 14, 2021 at 6:15 PM Michal Hocko wrote:
>
> On Wed 14-04-21 18:04:35, Muchun Song wrote:
> > On Wed, Apr 14, 2021 at 5:24 PM Michal Hocko wrote:
> > >
> > > On Tue 13-04-21 14:51:48, Muchun Song wrote:
> > > > When mm is NULL, we do not need to hold rcu lock and call css_tryget for
>
On Wed 14-04-21 18:04:35, Muchun Song wrote:
> On Wed, Apr 14, 2021 at 5:24 PM Michal Hocko wrote:
> >
> > On Tue 13-04-21 14:51:48, Muchun Song wrote:
> > > When mm is NULL, we do not need to hold rcu lock and call css_tryget for
> > > the root memcg. And we also do not need to check !mm in
On Wed, Apr 14, 2021 at 5:24 PM Michal Hocko wrote:
>
> On Tue 13-04-21 14:51:48, Muchun Song wrote:
> > When mm is NULL, we do not need to hold rcu lock and call css_tryget for
> > the root memcg. And we also do not need to check !mm in every loop of
> > while. So bail out early when !mm.
>
>
On Tue 13-04-21 14:51:48, Muchun Song wrote:
> When mm is NULL, we do not need to hold rcu lock and call css_tryget for
> the root memcg. And we also do not need to check !mm in every loop of
> while. So bail out early when !mm.
mem_cgroup_charge and other callers unconditionally drop the
On Tue, Apr 13, 2021 at 02:51:48PM +0800, Muchun Song wrote:
> When mm is NULL, we do not need to hold rcu lock and call css_tryget for
> the root memcg. And we also do not need to check !mm in every loop of
> while. So bail out early when !mm.
>
> Signed-off-by: Muchun Song
> Acked-by: Johannes
When mm is NULL, we do not need to hold rcu lock and call css_tryget for
the root memcg. And we also do not need to check !mm in every loop of
while. So bail out early when !mm.
Signed-off-by: Muchun Song
Acked-by: Johannes Weiner
Reviewed-by: Shakeel Butt
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mm/memcontrol.c | 21
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