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 D03E614264A for ; Tue, 12 Mar 2024 20:07:50 +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=1710274070; cv=none; b=Tp3bMHw3lTgwEcbE65XBCODYJllkp+wXHRIRuq7MkliPWEIGLHnsn0gcFMHmhCEGv6nRAFO4QLE1igKse7NHL4NzuN6oiBoobEzhk6FZfFi/ZgsrWwa5+uAh2gpuAJC24jI62sYFTWi5nBNSBo2L/r+4SuXcb6AoTp9+UIBaYNw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710274070; c=relaxed/simple; bh=YyXs2ulQUkUXjp5yWRGT2lroLRNNYj5XCIbrmDErTTY=; h=Date:To:From:Subject:Message-Id; b=gGxFDTOa813OkDShgBVx9TlPJEDlJgi3fu6pfANKU9gfW+fWGK7m4V25C7lYPCAT+Eq+kd9xxBpn6PGcvMHYS8A7J2Igmqwv+RHUMC+1+nLIJ8AvO3Sczq5Ef4s3ET3IugtDOGjvNPllmTM6jDWd7w9fDo2KWPQv96vssoNffrQ= 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=UuFIF+4b; 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="UuFIF+4b" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 52D94C43390; Tue, 12 Mar 2024 20:07:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1710274070; bh=YyXs2ulQUkUXjp5yWRGT2lroLRNNYj5XCIbrmDErTTY=; h=Date:To:From:Subject:From; b=UuFIF+4bbkjajjI/iZljYcVTFoosNVwnEMk6XXmSPBaYB8w5a1WcZeaCXEJk0ua9l NvZrgrP/DOwccVX/MU6Ah9gLFyq4npa2vhJsM0rUReddxj9TxmUprpE1o52Duwjynf RVLmc1M0JAnlxhZy0+o9gEyfuf2LJC71bu1W0mTE= Date: Tue, 12 Mar 2024 13:07:49 -0700 To: mm-commits@vger.kernel.org,yuzhao@google.com,willy@infradead.org,shy828301@gmail.com,ryan.roberts@arm.com,kirill.shutemov@linux.intel.com,david@redhat.com,dan.carpenter@linaro.org,ziy@nvidia.com,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] mm-huge_memory-skip-invalid-debugfs-new_order-input-for-folio-split.patch removed from -mm tree Message-Id: <20240312200750.52D94C43390@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: skip invalid debugfs new_order input for folio split has been removed from the -mm tree. Its filename was mm-huge_memory-skip-invalid-debugfs-new_order-input-for-folio-split.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Zi Yan Subject: mm/huge_memory: skip invalid debugfs new_order input for folio split Date: Thu, 7 Mar 2024 13:18:54 -0500 User can put arbitrary new_order via debugfs for folio split test. Although new_order check is added to split_huge_page_to_list_order() in the prior commit, these two additional checks can avoid unnecessary folio locking and split_folio_to_order() calls. Link: https://lkml.kernel.org/r/20240307181854.138928-2-zi.yan@sent.com Signed-off-by: Zi Yan Reported-by: Dan Carpenter Closes: https://lore.kernel.org/linux-mm/7dda9283-b437-4cf8-ab0d-83c330deb9c0@moroto.mountain/ Cc: David Hildenbrand Cc: Kirill A. Shutemov Cc: Matthew Wilcox (Oracle) Cc: Ryan Roberts Cc: Yang Shi Cc: Yu Zhao Signed-off-by: Andrew Morton --- mm/huge_memory.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/mm/huge_memory.c~mm-huge_memory-skip-invalid-debugfs-new_order-input-for-folio-split +++ a/mm/huge_memory.c @@ -3486,6 +3486,9 @@ static int split_huge_pages_pid(int pid, if (!is_transparent_hugepage(folio)) goto next; + if (new_order >= folio_order(folio)) + goto next; + total++; /* * For folios with private, split_huge_page_to_list_to_order() @@ -3553,6 +3556,9 @@ static int split_huge_pages_in_file(cons total++; nr_pages = folio_nr_pages(folio); + if (new_order >= folio_order(folio)) + goto next; + if (!folio_trylock(folio)) goto next; _ Patches currently in -mm which might be from ziy@nvidia.com are