From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 09DC437FF73 for ; Sat, 25 Apr 2026 22:06:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777154820; cv=none; b=KQpYTORZTXZJNzOQM09lxFPGJmw7mmS14Pee3HEbAORs0cwskbn+vzxlY1gvkuC1qCGqjgzSm09LDge5O6dQ3Ukl7Py2fYyiz/lQhFUg1xHSHPgA56O9T4VhSJOrdHKcKqCrgUjlmGzSrPw/8KizjLoV8k/KRnij+976uDIVZI8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777154820; c=relaxed/simple; bh=i48wrfbfOg9p75Upc8XJ66Ea3zp7XZmuIazGUS1fn9A=; h=Date:To:From:Subject:Message-Id; b=Vynf+n9gYpESIxdnAI/8mxQQC0YEFfT2xvAxyZob0N56IkIFkkVW99oSWkPipFto+ky+/v0SD3TxeEuz1ZMMDG/tGghhxCGVIInFz6+I/dweXVo8s2HTIcQkH99Dj65pPCfNYT/bGB3cQ8tXlph645QVktyxqDkObUimzxGQM4I= 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=Pl0Q+0QS; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="Pl0Q+0QS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 96886C2BCB0; Sat, 25 Apr 2026 22:06:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1777154819; bh=i48wrfbfOg9p75Upc8XJ66Ea3zp7XZmuIazGUS1fn9A=; h=Date:To:From:Subject:From; b=Pl0Q+0QS4NQw6BTW2hG1urQ2SRuev8Sych3TsWu828IOshh5KHF8GbzK9ZsdCyetZ M49NiICsxoSWCucoCn0O7KDC4Z/x6LjoHDciwSrFXkNAk2oJJc0Ambb3hytLBDmXA4 Y70c4+C0tGWJK7te2sgSvmWG15etKLxoGvkVOxro= Date: Sat, 25 Apr 2026 15:06:59 -0700 To: mm-commits@vger.kernel.org,ziy@nvidia.com,akpm@linux-foundation.org From: Andrew Morton Subject: [to-be-updated] mm-remove-read_only_thp_for_fs-kconfig-option.patch removed from -mm tree Message-Id: <20260425220659.96886C2BCB0@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: remove READ_ONLY_THP_FOR_FS Kconfig option has been removed from the -mm tree. Its filename was mm-remove-read_only_thp_for_fs-kconfig-option.patch This patch was dropped because an updated version will be issued ------------------------------------------------------ From: Zi Yan Subject: mm: remove READ_ONLY_THP_FOR_FS Kconfig option Date: Thu, 23 Apr 2026 22:49:08 -0400 After removing READ_ONLY_THP_FOR_FS check in file_thp_enabled(), khugepaged and MADV_COLLAPSE can run on FSes with PMD THP pagecache support even without READ_ONLY_THP_FOR_FS enabled. Remove the Kconfig first so that no one can use READ_ONLY_THP_FOR_FS as upcoming commits remove mapping->nr_thps, which its safe guard mechanism relies on. Link: https://lore.kernel.org/20260424024915.28758-6-ziy@nvidia.com Signed-off-by: Zi Yan Reviewed-by: Lorenzo Stoakes (Oracle) Acked-by: David Hildenbrand (Arm) Reviewed-by: Baolin Wang Cc: Al Viro Cc: Barry Song Cc: Chris Mason Cc: Christian Brauner Cc: David Sterba Cc: Dev Jain Cc: Jan Kara Cc: Lance Yang Cc: Liam Howlett Cc: Matthew Wilcox (Oracle) Cc: Michal Hocko Cc: Mike Rapoport Cc: Nico Pache Cc: Ryan Roberts Cc: Shuah Khan Cc: Song Liu Cc: Suren Baghdasaryan Signed-off-by: Andrew Morton --- mm/Kconfig | 11 ----------- 1 file changed, 11 deletions(-) --- a/mm/Kconfig~mm-remove-read_only_thp_for_fs-kconfig-option +++ a/mm/Kconfig @@ -938,17 +938,6 @@ config THP_SWAP For selection by architectures with reasonable THP sizes. -config READ_ONLY_THP_FOR_FS - bool "Read-only THP for filesystems (EXPERIMENTAL)" - depends on TRANSPARENT_HUGEPAGE - - help - Allow khugepaged to put read-only file-backed pages in THP. - - This is marked experimental because it is a new feature. Write - support of file THPs will be developed in the next few release - cycles. - config NO_PAGE_MAPCOUNT bool "No per-page mapcount (EXPERIMENTAL)" help _ Patches currently in -mm which might be from ziy@nvidia.com are mm-fs-remove-filemap_nr_thps-functions-and-their-users.patch fs-remove-nr_thps-from-struct-address_space.patch mm-huge_memory-remove-folio-split-check-for-read_only_thp_for_fs.patch mm-truncate-use-folio_split-in-truncate_inode_partial_folio.patch fs-btrfs-remove-a-comment-referring-to-read_only_thp_for_fs.patch selftests-mm-remove-read_only_thp_for_fs-in-khugepaged.patch selftests-mm-remove-read_only_thp_for_fs-code-from-guard-regions.patch