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[34.85.247.235]) by smtp.gmail.com with ESMTPSA id 00721157ae682-719532c7e4fsm30482117b3.72.2025.07.23.07.47.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Jul 2025 07:47:49 -0700 (PDT) From: Pasha Tatashin To: pratyush@kernel.org, jasonmiu@google.com, graf@amazon.com, changyuanl@google.com, pasha.tatashin@soleen.com, rppt@kernel.org, dmatlack@google.com, rientjes@google.com, corbet@lwn.net, rdunlap@infradead.org, ilpo.jarvinen@linux.intel.com, kanie@linux.alibaba.com, ojeda@kernel.org, aliceryhl@google.com, masahiroy@kernel.org, akpm@linux-foundation.org, tj@kernel.org, yoann.congal@smile.fr, mmaurer@google.com, roman.gushchin@linux.dev, chenridong@huawei.com, axboe@kernel.dk, mark.rutland@arm.com, jannh@google.com, vincent.guittot@linaro.org, hannes@cmpxchg.org, dan.j.williams@intel.com, david@redhat.com, joel.granados@kernel.org, rostedt@goodmis.org, anna.schumaker@oracle.com, song@kernel.org, zhangguopeng@kylinos.cn, linux@weissschuh.net, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, gregkh@linuxfoundation.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, rafael@kernel.org, dakr@kernel.org, bartosz.golaszewski@linaro.org, cw00.choi@samsung.com, myungjoo.ham@samsung.com, yesanishhere@gmail.com, Jonathan.Cameron@huawei.com, quic_zijuhu@quicinc.com, aleksander.lobakin@intel.com, ira.weiny@intel.com, andriy.shevchenko@linux.intel.com, leon@kernel.org, lukas@wunner.de, bhelgaas@google.com, wagi@kernel.org, djeffery@redhat.com, stuart.w.hayes@gmail.com, ptyadav@amazon.de, lennart@poettering.net, brauner@kernel.org, linux-api@vger.kernel.org, linux-fsdevel@vger.kernel.org, saeedm@nvidia.com, ajayachandra@nvidia.com, jgg@nvidia.com, parav@nvidia.com, leonro@nvidia.com, witu@nvidia.com Subject: [PATCH v2 27/32] mm: shmem: export some functions to internal.h Date: Wed, 23 Jul 2025 14:46:40 +0000 Message-ID: <20250723144649.1696299-28-pasha.tatashin@soleen.com> X-Mailer: git-send-email 2.50.0.727.gbf7dc18ff4-goog In-Reply-To: <20250723144649.1696299-1-pasha.tatashin@soleen.com> References: <20250723144649.1696299-1-pasha.tatashin@soleen.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: EDB01C0011 X-Stat-Signature: 78dw4fqkt9egw4fqkkoqt77cpm5ed8t7 X-HE-Tag: 1753282070-64850 X-HE-Meta: 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 dTMc2NOr 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: Pratyush Yadav shmem_inode_acct_blocks(), shmem_recalc_inode(), and shmem_add_to_page_cache() are used by shmem_alloc_and_add_folio(). This functionality will also be used in the future by Live Update Orchestrator (LUO) to recreate memfd files after a live update. Signed-off-by: Pratyush Yadav Signed-off-by: Pasha Tatashin --- mm/internal.h | 6 ++++++ mm/shmem.c | 10 +++++----- 2 files changed, 11 insertions(+), 5 deletions(-) diff --git a/mm/internal.h b/mm/internal.h index 6b8ed2017743..991917a8ae23 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -1535,6 +1535,12 @@ void __meminit __init_page_from_nid(unsigned long pfn, int nid); unsigned long shrink_slab(gfp_t gfp_mask, int nid, struct mem_cgroup *memcg, int priority); +int shmem_add_to_page_cache(struct folio *folio, + struct address_space *mapping, + pgoff_t index, void *expected, gfp_t gfp); +int shmem_inode_acct_blocks(struct inode *inode, long pages); +void shmem_recalc_inode(struct inode *inode, long alloced, long swapped); + #ifdef CONFIG_SHRINKER_DEBUG static inline __printf(2, 0) int shrinker_debugfs_name_alloc( struct shrinker *shrinker, const char *fmt, va_list ap) diff --git a/mm/shmem.c b/mm/shmem.c index d1e74f59cdba..4a616fe595e2 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -219,7 +219,7 @@ static inline void shmem_unacct_blocks(unsigned long flags, long pages) vm_unacct_memory(pages * VM_ACCT(PAGE_SIZE)); } -static int shmem_inode_acct_blocks(struct inode *inode, long pages) +int shmem_inode_acct_blocks(struct inode *inode, long pages) { struct shmem_inode_info *info = SHMEM_I(inode); struct shmem_sb_info *sbinfo = SHMEM_SB(inode->i_sb); @@ -433,7 +433,7 @@ static void shmem_free_inode(struct super_block *sb, size_t freed_ispace) * But normally info->alloced == inode->i_mapping->nrpages + info->swapped * So mm freed is info->alloced - (inode->i_mapping->nrpages + info->swapped) */ -static void shmem_recalc_inode(struct inode *inode, long alloced, long swapped) +void shmem_recalc_inode(struct inode *inode, long alloced, long swapped) { struct shmem_inode_info *info = SHMEM_I(inode); long freed; @@ -879,9 +879,9 @@ static void shmem_update_stats(struct folio *folio, int nr_pages) /* * Somewhat like filemap_add_folio, but error if expected item has gone. */ -static int shmem_add_to_page_cache(struct folio *folio, - struct address_space *mapping, - pgoff_t index, void *expected, gfp_t gfp) +int shmem_add_to_page_cache(struct folio *folio, + struct address_space *mapping, + pgoff_t index, void *expected, gfp_t gfp) { XA_STATE_ORDER(xas, &mapping->i_pages, index, folio_order(folio)); long nr = folio_nr_pages(folio); -- 2.50.0.727.gbf7dc18ff4-goog