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 488822E040D for ; Sat, 25 Apr 2026 22:06:57 +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=1777154817; cv=none; b=p+k+03QQ75KPnK04xAYBkcU+3cfUYU8MB3STPpOOTWMkxPv3jkleTRl5HaXw9azlIjdViWsaloCl/R/aXAjuwYg60SFnDzCUoPMsztDISTv8FrwZ7zTJaMGBT6WRifC3MdD14KP4Y62dSdXO0WB5/PBqJXvR1Mn0ZAD3qXVC4jc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777154817; c=relaxed/simple; bh=SaeFq8ECjyrx+poaEHSWeKCSkA2PUCA20pmKrtSBaRU=; h=Date:To:From:Subject:Message-Id; b=ohfvarPPb11CSGiVOB+9G70JPCdSZUWUKIjM7mGo8UtkXvKAiQzDLLf22yZYLOI3ACam9p/EKoY3rJZLlUqKn8uwcNNu4adIXPPopDEyvTZqBRtUCztPv7ERfYyw3H7KFMetLIGow9SDkppU0aM4AARs98Bo7ekXqgK6t5vEGV8= 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=DtS8f6HD; 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="DtS8f6HD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D255DC2BCB0; Sat, 25 Apr 2026 22:06:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1777154816; bh=SaeFq8ECjyrx+poaEHSWeKCSkA2PUCA20pmKrtSBaRU=; h=Date:To:From:Subject:From; b=DtS8f6HDbk5ndWEqW4VXGml05KDl8nsnojW/7x/sPxLGm0NZLBh22rqmVtnNzmkOz qZoPkCUhYK1DxV/wmmkULPyifYTato7uahJA8Jb8P0vYoMYs1MDj8mCsV/r+PVFSab j44oA5Zr8d94D6/SM2LTSrhoLLyp6SxKrNScDo48= Date: Sat, 25 Apr 2026 15:06:56 -0700 To: mm-commits@vger.kernel.org,ziy@nvidia.com,akpm@linux-foundation.org From: Andrew Morton Subject: [to-be-updated] mm-huge_memory-remove-read_only_thp_for_fs-from-file_thp_enabled.patch removed from -mm tree Message-Id: <20260425220656.D255DC2BCB0@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 READ_ONLY_THP_FOR_FS from file_thp_enabled() has been removed from the -mm tree. Its filename was mm-huge_memory-remove-read_only_thp_for_fs-from-file_thp_enabled.patch This patch was dropped because an updated version will be issued ------------------------------------------------------ From: Zi Yan Subject: mm/huge_memory: remove READ_ONLY_THP_FOR_FS from file_thp_enabled() Date: Thu, 23 Apr 2026 22:49:06 -0400 Replace it with a check on the max folio order of the file's address space mapping, making sure PMD THP is supported. Also remove the read-only fd check, since collapse_file() now makes sure all to-be-collapsed folios are clean and the created PMD file THP can be handled by FSes properly. Link: https://lore.kernel.org/20260424024915.28758-4-ziy@nvidia.com Signed-off-by: Zi Yan Reviewed-by: Baolin Wang Acked-by: David Hildenbrand (Arm) 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: Lorenzo Stoakes 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/huge_memory.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) --- a/mm/huge_memory.c~mm-huge_memory-remove-read_only_thp_for_fs-from-file_thp_enabled +++ a/mm/huge_memory.c @@ -86,9 +86,6 @@ static inline bool file_thp_enabled(stru { struct inode *inode; - if (!IS_ENABLED(CONFIG_READ_ONLY_THP_FOR_FS)) - return false; - if (!vma->vm_file) return false; @@ -97,7 +94,10 @@ static inline bool file_thp_enabled(stru if (IS_ANON_FILE(inode)) return false; - return !inode_is_open_for_write(inode) && S_ISREG(inode->i_mode); + if (!mapping_pmd_thp_support(inode->i_mapping)) + return false; + + return S_ISREG(inode->i_mode); } /* If returns true, we are unable to access the VMA's folios. */ _ Patches currently in -mm which might be from ziy@nvidia.com are mm-khugepaged-remove-read_only_thp_for_fs-check-in-hugepage_enabled.patch mm-remove-read_only_thp_for_fs-kconfig-option.patch 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