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d=arm.com; s=foss; t=1784790611; bh=B0Ateg28ZulVYTvLgCnS5RzZ0jyHIGM6ERhGQEjXq6k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iFRumHWB5p0fFec+k2QbiSGOLO8WXPV4fh5pFjnkU0ZowQ544zEoCYX4jVUygKkCK cUCxM60AIbb+qISG2r03haAvJPteCnFY5HKieL8paJoD4twRbEWh3aMh6OsMRal2Fg CvMRllLQzVbwpMAXyeh8OcoqF1WwtR3PLAeCfR+0= From: Dev Jain To: akpm@linux-foundation.org, david@kernel.org, ljs@kernel.org, hughd@google.com, chrisl@kernel.org, kasong@tencent.com Cc: Dev Jain , riel@surriel.com, liam@infradead.org, vbabka@kernel.org, harry@kernel.org, jannh@google.com, lance.yang@linux.dev, baolin.wang@linux.alibaba.com, shikemeng@huaweicloud.com, nphamcs@gmail.com, baoquan.he@linux.dev, baohua@kernel.org, youngjun.park@lge.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, rppt@kernel.org, surenb@google.com, mhocko@suse.com, pfalcato@suse.de, ryan.roberts@arm.com, anshuman.khandual@arm.com Subject: [PATCH 7/8] mm: move anon-exclusive batch helper to internal.h Date: Thu, 23 Jul 2026 07:09:03 +0000 Message-ID: <20260723070905.3422276-8-dev.jain@arm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260723070905.3422276-1-dev.jain@arm.com> References: <20260723070905.3422276-1-dev.jain@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: d9hryrh5z854bfqwpoo7mspi7kpeif9w X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 87A1B40007 X-HE-Tag: 1784790612-664752 X-HE-Meta: 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 LxQr3ziD FR+2SR2M0clG3sDLHU42rrBLaXFQzLT0uj6jPhgXiGv7HqUA9DfWL3tXhqATBdRvjBAoThSIx6FwhnfLdoIU1UI+Ii5SPP0Q6FiT15KQbnkZ5yBLVjNDBL9CkgIuOfPw/6rG8It6+QQaZv87TyD1r8yTVztGN3y8yPKsF1qbkNTV6KN1Eu3IjlRjMUFZ0YmkkYEKL7F0zomw1GHMsyvRlC1IFey3tJDgd98/hHV0sxukiarofXa9/SyMQug== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: In preparation for optimizing large folio unmapping, we need to reuse the page_anon_exclusive_batch helper in rmap.c. Therefore, move it from mprotect.c to internal.h. Signed-off-by: Dev Jain --- mm/internal.h | 17 +++++++++++++++++ mm/mprotect.c | 17 ----------------- 2 files changed, 17 insertions(+), 17 deletions(-) diff --git a/mm/internal.h b/mm/internal.h index 3fc1c1c776ca3..df799d0c24e0b 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -474,6 +474,23 @@ static inline unsigned int folio_pte_batch_flags(struct folio *folio, unsigned int folio_pte_batch(struct folio *folio, pte_t *ptep, pte_t pte, unsigned int max_nr); +/* + * Get max length of consecutive PTEs pointing to PageAnonExclusive() pages or + * !PageAnonExclusive() pages, starting from start_idx. Caller must enforce + * that the PTEs point to consecutive pages of the same anon large folio. + */ +static __always_inline int page_anon_exclusive_batch(int start_idx, int max_len, + struct page *first_page, bool expected_anon_exclusive) +{ + int idx; + + for (idx = start_idx + 1; idx < start_idx + max_len; ++idx) { + if (expected_anon_exclusive != PageAnonExclusive(first_page + idx)) + break; + } + return idx - start_idx; +} + /** * pte_move_softleaf_offset - Move the softleaf entry offset field of a * softleaf pte forward or backward by delta diff --git a/mm/mprotect.c b/mm/mprotect.c index 2888ee638d872..75c2b1a00eb36 100644 --- a/mm/mprotect.c +++ b/mm/mprotect.c @@ -138,23 +138,6 @@ static __always_inline void prot_commit_flush_ptes(struct vm_area_struct *vma, tlb_flush_pte_range(tlb, addr, nr_ptes * PAGE_SIZE); } -/* - * Get max length of consecutive ptes pointing to PageAnonExclusive() pages or - * !PageAnonExclusive() pages, starting from start_idx. Caller must enforce - * that the ptes point to consecutive pages of the same anon large folio. - */ -static __always_inline int page_anon_exclusive_batch(int start_idx, int max_len, - struct page *first_page, bool expected_anon_exclusive) -{ - int idx; - - for (idx = start_idx + 1; idx < start_idx + max_len; ++idx) { - if (expected_anon_exclusive != PageAnonExclusive(first_page + idx)) - break; - } - return idx - start_idx; -} - /* * This function is a result of trying our very best to retain the * "avoid the write-fault handler" optimization. In can_change_pte_writable(), -- 2.43.0