From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3A6EA49B5CA for ; Tue, 13 Oct 2026 18:33:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791916391; cv=none; b=n98ds5XPgSuLK1bp/G5BX4N4rHo3M4uGC3gNK547mDVTAAKs8JFaAA6mLbjf4t/U2Nu+UjY1p/UFVeSmI5QntobXvTE1HjOCACU1KUO8NhrZ9xXvmacf1xwfD1C1HEeGn68P+aBC9QVoaPsRhSS7nAQXDR9nWxkChJpIT9gBH/c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791916391; c=relaxed/simple; bh=bwPw/5iJoPJjZLlLbpA+o5PtwUCiMnunrWvqVGFdXUg=; h=Date:To:From:Subject:Message-Id; b=fzpHeguy+19SGMyH26osXaTFgS50tqKIh1SqLYUP8l0qgCGWAa3+dOhAToAw10x2QuLe62KD+VKVHqrjBdXlH94pxGDEk8pMumrR+wVs6qhK9XonEm7gfNKh7Ic3Xaw8eu5TJYTEaE/ZnzhfkL0J5Yj0dplenz7yxnkF89liYQQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=Amziq52L; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="Amziq52L" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 10E791F000FF; Tue, 13 Oct 2026 18:33:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1791916390; bh=Cmoz+gk29woTdgnrF8ur9I8lUcMjDZNN/NIGO63ClHI=; h=Date:To:From:Subject; b=Amziq52Lwc28QEFp5EkGtOwY7RdkOc16WUNCMN9BDjuoBCbIh1smE1epu+KoUQdxl bL3D6Op1cpZzAK4HCf6M69CvB8huNyGqCnVIehOsdOK39Uf1b+OAbUh6lraJzhVuQi Cq/NWmpqOd74hHQcOCTJ8/b39frUtlN9xdjdOws0= Date: Tue, 13 Oct 2026 11:33:09 -0700 To: mm-commits@vger.kernel.org,ljs@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: [to-be-updated] mm-huge_memory-remove-vma_is_special_huge.patch removed from -mm tree Message-Id: <20261013183310.10E791F000FF@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: mm/huge_memory: remove vma_is_special_huge() has been removed from the -mm tree. Its filename was mm-huge_memory-remove-vma_is_special_huge.patch This patch was dropped because an updated version will be issued ------------------------------------------------------ From: "Lorenzo Stoakes (ARM)" Subject: mm/huge_memory: remove vma_is_special_huge() Date: Fri, 09 Oct 2026 19:04:32 +0100 vma_is_special_huge() tests whether either the VMA_PFNMAP_BIT or VMA_MIXEDMAP_BIT is set (i.e. whether the VMA is not mm-managed), but with a DAX carve-out. DAX however no longer sets VMA_MIXEDMAP_BIT, so this carve-out is no longer required. Therefore test for !vma_is_mm_managed() instead and also drop the VMA_IO_BIT check, as it is now redundant since it is enforced that mm-managed mappings may not set VMA_IO_BIT. This also eliminates another overloaded use of 'special' within mm. No functional change intended. Link: https://lore.kernel.org/20261009-b4-mmap-prepare-vma-flag-sanify-v5-38-923b70125b1e@kernel.org Signed-off-by: Lorenzo Stoakes (ARM) Signed-off-by: Andrew Morton Acked-by: Zi Yan Acked-by: David Hildenbrand (Arm) Cc: Liam R. Howlett Cc: Vlastimil Babka Cc: Jann Horn Cc: Pedro Falcato Cc: Mike Rapoport Cc: Suren Baghdasaryan Cc: Michal Hocko Cc: Jonathan Corbet Cc: Greg Kroah-Hartman Cc: Dennis Dalessandro Cc: Jason Gunthorpe Cc: Leon Romanovsky Cc: Paul Moore Cc: Stephen Smalley Cc: Jaroslav Kysela Cc: Takashi Iwai Cc: Alexei Starovoitov Cc: Daniel Borkmann Cc: Andrii Nakryiko Cc: Eduard Zingerman Cc: Kumar Kartikeya Dwivedi Cc: Baolin Wang Cc: Nico Pache Cc: Ryan Roberts Cc: Dev Jain Cc: Barry Song Cc: Lance Yang Cc: Usama Arif Cc: Kiryl Shutsemau Cc: Doug Gilbert Cc: James Bottomley Cc: Martin K. Petersen Cc: Simona Vetter Cc: Helge Deller Cc: Sebastian Reichel Cc: John Hubbard Cc: Peter Xu Cc: Masami Hiramatsu Cc: Oleg Nesterov Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: Dave Hansen Cc: Arnaldo Carvalho de Melo Cc: Namhyung Kim Cc: Mark Rutland Cc: Rik van Riel Cc: Harry Yoo Cc: Juri Lelli Cc: Vincent Guittot Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: Thomas Zimmermann Cc: David Airlie Cc: Will Deacon Cc: Aneesh Kumar K.V Cc: Nicholas Piggin Cc: Arnd Bergmann Cc: Muchun Song Cc: Oscar Salvador Cc: Matthew Wilcox (Oracle) Cc: Jan Kara Cc: Marc Zyngier Cc: Oliver Upton Cc: Catalin Marinas Cc: Madhavan Srinivasan Cc: Anup Patel Cc: Paul Walmsley Cc: Palmer Dabbelt Cc: Albert Ou Cc: Christian Borntraeger Cc: Janosch Frank Cc: Claudio Imbrenda Cc: Alexander Gordeev Cc: Gerald Schaefer Cc: Heiko Carstens Cc: Vasily Gorbik Cc: David S. Miller Cc: Andreas Larsson Cc: Al Viro Cc: Christian Brauner Cc: Matthew Brost Cc: Joshua Hahn Cc: Rakie Kim Cc: Byungchul Park Cc: Gregory Price Cc: Ying Huang Cc: Alistair Popple Cc: Chris Li Cc: Kairui Song Cc: Kemeng Shi Cc: Nhat Pham Cc: Baoquan He Cc: Youngjun Park Cc: Johannes Weiner Cc: Qi Zheng Cc: Shakeel Butt Cc: Axel Rasmussen Cc: Yuanchu Xie Cc: Wei Xu Cc: Chengming Zhou Cc: Michal Hocko Cc: Miklos Szeredi Cc: Xu Xin Cc: Ihor Solodrai Cc: Bert Karwatzki --- mm/huge_memory.c | 18 ++++-------------- 1 file changed, 4 insertions(+), 14 deletions(-) --- a/mm/huge_memory.c~mm-huge_memory-remove-vma_is_special_huge +++ a/mm/huge_memory.c @@ -110,14 +110,6 @@ static inline bool file_thp_enabled(cons return S_ISREG(inode->i_mode); } -/* If returns true, we are unable to access the VMA's folios. */ -static bool vma_is_special_huge(const struct vm_area_struct *vma) -{ - if (vma_is_dax(vma)) - return false; - return vma_test_any(vma, VMA_PFNMAP_BIT, VMA_MIXEDMAP_BIT); -} - static bool vma_file_bypass_thp_tuneables(const struct vm_area_struct *vma, enum tva_type type) { @@ -192,7 +184,7 @@ unsigned long __thp_vma_allowable_orders /* Check the intersection of requested and supported orders. */ if (vma_is_anonymous(vma)) supported_orders = THP_ORDERS_ALL_ANON; - else if (vma_is_dax(vma) || vma_is_special_huge(vma)) + else if (vma_is_dax(vma) || !vma_is_mm_managed(vma)) supported_orders = THP_ORDERS_ALL_SPECIAL_DAX; else supported_orders = THP_ORDERS_ALL_FILE_DEFAULT; @@ -3056,7 +3048,7 @@ int zap_huge_pud(struct mmu_gather *tlb, orig_pud = pudp_huge_get_and_clear_full(vma, addr, pud, tlb->fullmm); arch_check_zapped_pud(vma, orig_pud); tlb_remove_pud_tlb_entry(tlb, pud, addr); - if (vma_is_special_huge(vma)) { + if (!vma_is_mm_managed(vma)) { spin_unlock(ptl); /* No zero page support yet */ } else { @@ -3212,7 +3204,7 @@ static void __split_huge_pmd_locked(stru */ if (arch_needs_pgtable_deposit()) zap_deposited_table(mm, pmd); - if (vma_is_special_huge(vma)) + if (!vma_is_mm_managed(vma)) return; if (unlikely(pmd_is_migration_entry(old_pmd))) { const softleaf_t old_entry = softleaf_from_pmd(old_pmd); @@ -4779,9 +4771,7 @@ static inline bool vma_not_suitable_for_ { if (vma_is_dax(vma)) return true; - if (vma_is_special_huge(vma)) - return true; - if (vma_test(vma, VMA_IO_BIT)) + if (!vma_is_mm_managed(vma)) return true; if (vma_is_hugetlb(vma)) return true; _ Patches currently in -mm which might be from ljs@kernel.org are mm-vma-const-ify-vma_assert_stabilised-and-associated-functions.patch mm-implement-and-use-vma_has_anon_rmap-silence-kcsan.patch mm-update-comments-to-refer-to-anon-rmap-rather-than-anon_vma.patch mm-vma-dont-remove-vma-from-rmap-if-pgoff-unchanged.patch