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[109.81.84.37]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-438bd50184dsm129003935e9.10.2025.01.27.04.50.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Jan 2025 04:50:45 -0800 (PST) Date: Mon, 27 Jan 2025 13:50:44 +0100 From: Michal Hocko To: Johannes Weiner Cc: Andrew Morton , Roman Gushchin , Shakeel Butt , Muchun Song , linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/2] mm: memcontrol: unshare v2-only charge API bits again Message-ID: References: <20250124043859.18808-1-hannes@cmpxchg.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250124043859.18808-1-hannes@cmpxchg.org> On Thu 23-01-25 23:38:58, Johannes Weiner wrote: > 6b611388b626 ("memcg-v1: remove charge move code") removed the > remaining v1 callers. > > Signed-off-by: Johannes Weiner Acked-by: Michal Hocko Thanks! > --- > mm/memcontrol-v1.h | 15 --------------- > mm/memcontrol.c | 17 +++++++++++++---- > 2 files changed, 13 insertions(+), 19 deletions(-) > > diff --git a/mm/memcontrol-v1.h b/mm/memcontrol-v1.h > index 144d71b65907..6dd7eaf96856 100644 > --- a/mm/memcontrol-v1.h > +++ b/mm/memcontrol-v1.h > @@ -7,21 +7,6 @@ > > /* Cgroup v1 and v2 common declarations */ > > -int try_charge_memcg(struct mem_cgroup *memcg, gfp_t gfp_mask, > - unsigned int nr_pages); > - > -static inline int try_charge(struct mem_cgroup *memcg, gfp_t gfp_mask, > - unsigned int nr_pages) > -{ > - if (mem_cgroup_is_root(memcg)) > - return 0; > - > - return try_charge_memcg(memcg, gfp_mask, nr_pages); > -} > - > -void mem_cgroup_id_get_many(struct mem_cgroup *memcg, unsigned int n); > -void mem_cgroup_id_put_many(struct mem_cgroup *memcg, unsigned int n); > - > /* > * Iteration constructs for visiting all cgroups (under a tree). If > * loops are exited prematurely (break), mem_cgroup_iter_break() must > diff --git a/mm/memcontrol.c b/mm/memcontrol.c > index 46f8b372d212..818143b81760 100644 > --- a/mm/memcontrol.c > +++ b/mm/memcontrol.c > @@ -2198,8 +2198,8 @@ void mem_cgroup_handle_over_high(gfp_t gfp_mask) > css_put(&memcg->css); > } > > -int try_charge_memcg(struct mem_cgroup *memcg, gfp_t gfp_mask, > - unsigned int nr_pages) > +static int try_charge_memcg(struct mem_cgroup *memcg, gfp_t gfp_mask, > + unsigned int nr_pages) > { > unsigned int batch = max(MEMCG_CHARGE_BATCH, nr_pages); > int nr_retries = MAX_RECLAIM_RETRIES; > @@ -2388,6 +2388,15 @@ int try_charge_memcg(struct mem_cgroup *memcg, gfp_t gfp_mask, > return 0; > } > > +static inline int try_charge(struct mem_cgroup *memcg, gfp_t gfp_mask, > + unsigned int nr_pages) > +{ > + if (mem_cgroup_is_root(memcg)) > + return 0; > + > + return try_charge_memcg(memcg, gfp_mask, nr_pages); > +} > + > static void commit_charge(struct folio *folio, struct mem_cgroup *memcg) > { > VM_BUG_ON_FOLIO(folio_memcg_charged(folio), folio); > @@ -3368,13 +3377,13 @@ static void mem_cgroup_id_remove(struct mem_cgroup *memcg) > } > } > > -void __maybe_unused mem_cgroup_id_get_many(struct mem_cgroup *memcg, > +static void __maybe_unused mem_cgroup_id_get_many(struct mem_cgroup *memcg, > unsigned int n) > { > refcount_add(n, &memcg->id.ref); > } > > -void mem_cgroup_id_put_many(struct mem_cgroup *memcg, unsigned int n) > +static void mem_cgroup_id_put_many(struct mem_cgroup *memcg, unsigned int n) > { > if (refcount_sub_and_test(n, &memcg->id.ref)) { > mem_cgroup_id_remove(memcg); > -- > 2.48.1 -- Michal Hocko SUSE Labs