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[128.59.178.193]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-90e9eec85a0sm25420936d6.29.2026.09.02.12.28.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Sep 2026 12:28:29 -0700 (PDT) From: Tal Zussman Date: Wed, 02 Sep 2026 15:27:55 -0400 Subject: [PATCH 09/11] mm: memcontrol: constify the swap accounting helpers Precedence: bulk X-Mailing-List: cgroups@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260902-folio_memcg-const-v1-9-e2c1da22246d@columbia.edu> References: <20260902-folio_memcg-const-v1-0-e2c1da22246d@columbia.edu> In-Reply-To: <20260902-folio_memcg-const-v1-0-e2c1da22246d@columbia.edu> To: Johannes Weiner , Michal Hocko , Roman Gushchin , Shakeel Butt , Muchun Song , Andrew Morton , Chris Li , Kairui Song , Kemeng Shi , Nhat Pham , Baoquan He , Barry Song , Youngjun Park , David Hildenbrand , Lorenzo Stoakes , "Liam R. 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Constify them. Remove externs from function declarations while at it. Signed-off-by: Tal Zussman --- include/linux/swap.h | 12 ++++++------ mm/memcontrol.c | 6 +++--- 2 files changed, 9 insertions(+), 9 deletions(-) diff --git a/include/linux/swap.h b/include/linux/swap.h index a72ecf12c00d..a64b5d37bf36 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -510,9 +510,9 @@ static inline void mem_cgroup_uncharge_swap(unsigned short id, unsigned int nr_p __mem_cgroup_uncharge_swap(id, nr_pages); } -long mem_cgroup_get_folio_swap_margin(struct folio *folio); -extern long mem_cgroup_get_nr_swap_pages(struct mem_cgroup *memcg); -extern bool mem_cgroup_swap_full(struct folio *folio); +long mem_cgroup_get_folio_swap_margin(const struct folio *folio); +long mem_cgroup_get_nr_swap_pages(const struct mem_cgroup *memcg); +bool mem_cgroup_swap_full(const struct folio *folio); #else static inline int mem_cgroup_try_charge_swap(struct folio *folio) { @@ -524,17 +524,17 @@ static inline void mem_cgroup_uncharge_swap(unsigned short id, { } -static inline long mem_cgroup_get_folio_swap_margin(struct folio *folio) +static inline long mem_cgroup_get_folio_swap_margin(const struct folio *folio) { return PAGE_COUNTER_MAX; } -static inline long mem_cgroup_get_nr_swap_pages(struct mem_cgroup *memcg) +static inline long mem_cgroup_get_nr_swap_pages(const struct mem_cgroup *memcg) { return get_nr_swap_pages(); } -static inline bool mem_cgroup_swap_full(struct folio *folio) +static inline bool mem_cgroup_swap_full(const struct folio *folio) { return vm_swap_full(); } diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 3d3eadddc130..2b8705a88f6a 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -5839,7 +5839,7 @@ void __mem_cgroup_uncharge_swap(unsigned short id, unsigned int nr_pages) rcu_read_unlock(); } -long mem_cgroup_get_nr_swap_pages(struct mem_cgroup *memcg) +long mem_cgroup_get_nr_swap_pages(const struct mem_cgroup *memcg) { long nr_swap_pages = get_nr_swap_pages(); @@ -5855,7 +5855,7 @@ long mem_cgroup_get_nr_swap_pages(struct mem_cgroup *memcg) * * Return: Remaining chargeable pages in the folio's memcg hierarchy. */ -long mem_cgroup_get_folio_swap_margin(struct folio *folio) +long mem_cgroup_get_folio_swap_margin(const struct folio *folio) { struct mem_cgroup *memcg; long margin; @@ -5872,7 +5872,7 @@ long mem_cgroup_get_folio_swap_margin(struct folio *folio) return margin; } -bool mem_cgroup_swap_full(struct folio *folio) +bool mem_cgroup_swap_full(const struct folio *folio) { struct mem_cgroup *memcg; bool ret = false; -- 2.39.5