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[34.86.47.53]) by smtp.gmail.com with ESMTPSA id 00721157ae682-787d68754d3sm990817b3.26.2025.11.07.13.05.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 07 Nov 2025 13:06:00 -0800 (PST) From: Pasha Tatashin To: pratyush@kernel.org, jasonmiu@google.com, graf@amazon.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, hughd@google.com, skhawaja@google.com, chrisl@kernel.org Subject: [PATCH v5 15/22] mm: shmem: export some functions to internal.h Date: Fri, 7 Nov 2025 16:03:13 -0500 Message-ID: <20251107210526.257742-16-pasha.tatashin@soleen.com> X-Mailer: git-send-email 2.51.2.1041.gc1ab5b90ca-goog In-Reply-To: <20251107210526.257742-1-pasha.tatashin@soleen.com> References: <20251107210526.257742-1-pasha.tatashin@soleen.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 22D8114000B X-Stat-Signature: oj8eyf7ztibwagzyj8auitnoa79x5uyh X-Rspam-User: X-HE-Tag: 1762549561-832146 X-HE-Meta: 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 WwvErx61 QSErt04fauNLCaprXzKWEsuGbuHDgW6RPK2OFmSio4PiK/Liz7JembHVhHmYdzE2jRRiAoLeVRkhdVQqYzOMqTBZBcZJ6MAuRakhstmr5c4MqBaz9sZlQLnkwkF/xMMBbAmwM7UUScUU75mzktVRnivjOpSsG6hte5bysWGg85Yo/hZW6iuzPv9x7RbmBJq3lILfOx+/z+066dBACj4uvussN04voygSa/w0foNNECicQAm/nWxRaUUvSTmFI0cNKithz0ZD/R2cAFj71VsVIF9DKNOXK/mcBc8lMBSXWcYcfXzolpYp/HMHJkat8B7n4BSw1ahDugqRAuS6HLT8wxIaMSRiYnkTq7teZ+TxWCCSnqw3HKmN0n7FfLNcQmjOpQ3L3w7bgle7+oa7PVxSu8Pg5m2oEdlEKvfTo8DziBpWtscLZXMeCTeYnZQ== 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 0af87f6c2889..3f957e86f43f 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -1585,6 +1585,12 @@ 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 2e3cb0424a1f..c3ed2dcd17f8 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; @@ -890,9 +890,9 @@ 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); -- 2.51.2.1041.gc1ab5b90ca-goog