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[34.85.247.235]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-7077cde5a01sm92969046d6.70.2025.08.06.18.45.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 06 Aug 2025 18:45:27 -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 v3 28/30] mm: shmem: export some functions to internal.h Date: Thu, 7 Aug 2025 01:44:34 +0000 Message-ID: <20250807014442.3829950-29-pasha.tatashin@soleen.com> X-Mailer: git-send-email 2.50.1.565.gc32cd1483b-goog In-Reply-To: <20250807014442.3829950-1-pasha.tatashin@soleen.com> References: <20250807014442.3829950-1-pasha.tatashin@soleen.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 3BB1040006 X-Stat-Signature: ccywpa1hoxci8h6fk37bufpg88kquy5e X-HE-Tag: 1754531129-976240 X-HE-Meta: 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 pZCF+9Ug c/usuqzhqSCEuQyjoaFdt79hdwytQWxP5DFVw674egA/vB7eoy5iH/YL3pWjQCGKj7cXYutVbEjI36MHCsl0LI6/Tece+xdQNSiuXY5pg69FDz4t6u2pmXjL9K/BtSRUe3xrH02myXkDtyC+MV6VtARM8Yg2nh3LL8ZhZtj7W1gqBt1wFYMvpjI4Nzse5Vq0Q6eWdmbOUQbiz2ugVzVK31LZUl8a+fWF1BzO3B96yRJoGIofrgG1JDmpAvPTDnwhwpn6ltqnDNX9SzsBFRXDCpJ4PzoOBKFkRNmhknxENmBgf7Plb55JTElQ18Vz2jqW6yLWF4THbyCfBxna5Q2SjJ6cIInFJTL9iJOuLeDnk2sskZHKa/rmtlGwMaPZTTd5IUC6DU3ew3z+W8TyIIXDeS51Ts+KvZooqtxD8VQF8tzbBRHwMjhi//53z6Q== 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 45b725c3dc03..5cf487ee6f83 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -1566,6 +1566,12 @@ 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); +bool 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 ef57e2649a41..eea2e8ca205f 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); @@ -435,7 +435,7 @@ static void shmem_free_inode(struct super_block *sb, size_t freed_ispace) * * Return: true if swapped was incremented from 0, for shmem_writeout(). */ -static bool shmem_recalc_inode(struct inode *inode, long alloced, long swapped) +bool shmem_recalc_inode(struct inode *inode, long alloced, long swapped) { struct shmem_inode_info *info = SHMEM_I(inode); bool first_swapped = false; @@ -898,9 +898,9 @@ 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)); unsigned long nr = folio_nr_pages(folio); -- 2.50.1.565.gc32cd1483b-goog