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 34C63302CD5 for ; Mon, 18 May 2026 21:59:27 +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=1779141568; cv=none; b=ltwyFEwMxegOfdTubVUDVZA+McaixdqJKzWHP/jjKRAo7ruXpKGl34IrV7zK/zN7u65GoVYpcs4Y0V4JZ8rfAhK3rxB2WYUMRdhsVTJZWaeXTxA72Cg3CK9MHe6ECI7aPcvILIYtkLWNigIx9Ap1oSp8TpJddx2JedjHtSvflmc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779141568; c=relaxed/simple; bh=v66MEWVZnYFGT8HCHCbJJX6hIcUnNsilfDTm+vkZA3E=; h=Date:To:From:Subject:Message-Id; b=hqFdmXu/yoQVYfksV2tvDxBw0UcQHnmsu433XRgskMG6y8zWGTLbcPtRtsbFIZLq0J8D/D46GMwHQcFB9Ynj5TXYDNXEnw8vhxJdB6L2SBAvWVCAE45MM4PzG9tL1tMLNWG0ZCjlTxFDh2PcApzAKQuWOnXFMCsbXLxFWiL6Fd4= 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=SLK/uZMe; 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="SLK/uZMe" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C412AC2BCB7; Mon, 18 May 2026 21:59:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1779141567; bh=v66MEWVZnYFGT8HCHCbJJX6hIcUnNsilfDTm+vkZA3E=; h=Date:To:From:Subject:From; b=SLK/uZMeIcRnT9NjMNU8JKtvRGNd6YgMfD3wrzwCyhIo4KPfiokFOJqRaR2rVqCED 90h90UtzlFHF91pXrw3NNS4OddePDoPrxG3nn+1h8OktxufDGPRHYAT60AMFsLcOXy 8e4Hq0UaO5m6fIKXbajBL+dUcTL7Nn3a/W3m+gJo= Date: Mon, 18 May 2026 14:59:27 -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: <20260518215927.C412AC2BCB7@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: Wed, 29 Apr 2026 11:35:28 -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/20260429153538.727855-1-ziy@nvidia.com Signed-off-by: Zi Yan Reviewed-by: Lorenzo Stoakes (Oracle) Acked-by: David Hildenbrand (Arm) Reviewed-by: Baolin Wang Reviewed-by: Nico Pache Reviewed-by: Lance Yang Cc: Al Viro Cc: Barry Song Cc: Chris Mason Cc: Christian Brauner Cc: David Sterba Cc: Dev Jain Cc: Jan Kara 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 Cc: Vlastimil Babka 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 @@ -936,17 +936,6 @@ 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-in-khugepaged-fix.patch selftests-mm-remove-read_only_thp_for_fs-in-khugepaged-fix-2.patch selftests-mm-remove-read_only_thp_for_fs-code-from-guard-regions.patch mm-khugepaged-enable-clean-pagecache-folio-collapse-for-writable-files.patch selftests-mm-add-writable-file-collapse-tests-for-khugepaged.patch