> -----Original Message----- > From: Michal Hocko <mhocko@xxxxxxxx> > Sent: Wednesday, August 21, 2024 11:15 PM > To: Sridhar, Kanchana P <kanchana.p.sridhar@xxxxxxxxx> > Cc: Nhat Pham <nphamcs@xxxxxxxxx>; linux-kernel@xxxxxxxxxxxxxxx; linux- > mm@xxxxxxxxx; hannes@xxxxxxxxxxx; yosryahmed@xxxxxxxxxx; > ryan.roberts@xxxxxxx; Huang, Ying <ying.huang@xxxxxxxxx>; > 21cnbao@xxxxxxxxx; akpm@xxxxxxxxxxxxxxxxxxxx; Zou, Nanhai > <nanhai.zou@xxxxxxxxx>; Feghali, Wajdi K <wajdi.k.feghali@xxxxxxxxx>; > Gopal, Vinodh <vinodh.gopal@xxxxxxxxx> > Subject: Re: [PATCH v1] mm: Defines obj_cgroup_get() if CONFIG_MEMCG is > not defined. > > On Wed 21-08-24 19:40:42, Sridhar, Kanchana P wrote: > > > > > -----Original Message----- > > > From: Nhat Pham <nphamcs@xxxxxxxxx> > > > Sent: Wednesday, August 21, 2024 12:24 PM > > > To: Sridhar, Kanchana P <kanchana.p.sridhar@xxxxxxxxx> > > > Cc: linux-kernel@xxxxxxxxxxxxxxx; linux-mm@xxxxxxxxx; > > > hannes@xxxxxxxxxxx; yosryahmed@xxxxxxxxxx; > ryan.roberts@xxxxxxx; > > > Huang, Ying <ying.huang@xxxxxxxxx>; 21cnbao@xxxxxxxxx; akpm@linux- > > > foundation.org; Zou, Nanhai <nanhai.zou@xxxxxxxxx>; Feghali, Wajdi K > > > <wajdi.k.feghali@xxxxxxxxx>; Gopal, Vinodh <vinodh.gopal@xxxxxxxxx> > > > Subject: Re: [PATCH v1] mm: Defines obj_cgroup_get() if CONFIG_MEMCG > is > > > not defined. > > > > > > On Tue, Aug 20, 2024 at 3:50 PM Kanchana P Sridhar > > > <kanchana.p.sridhar@xxxxxxxxx> wrote: > > > > > > > > This resolves an issue with obj_cgroup_get() not being defined > > > > if CONFIG_MEMCG is not defined. This causes build errors if > > > > obj_cgroup_get() is called from code that is agnostic of > CONFIG_MEMCG. > > > > > > > > The patch resolves this. > > > > > > > > Signed-off-by: Kanchana P Sridhar <kanchana.p.sridhar@xxxxxxxxx> > > > > --- > > > > > > This is only exposed because of your zswap mTHP patch series right? > > > Could you include this patch as part of that series (since we don't > > > need this without that patch series), or make it clear in the change > > > log? > > > > That's correct, Nhat. Although, it might be useful to have obj_cgroup_get() > > defined in the case where CONFIG_MEMCG is not defined. memcontrol.h > > handles obj_cgroup_put() similarly. Would it be Ok if I included a reference > > to the zswap mTHP patch series in the change log? > > I would just fold it into the patch which exposes use without > CONFIG_MEMCG. We currently do not have any such user. That's why I've > asked what is this patch based on. Ok, this sounds good, Michal and Nhat. Thanks, Kanchana > -- > Michal Hocko > SUSE Labs
