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 9C03D285C93 for ; Thu, 10 Jul 2025 05:45:46 +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=1752126346; cv=none; b=ieIoVl4LvVLvtaDakBeIz0QJq/N/ocR8RQ+JZbvSnyPz96QScM2wDJz8sEgy+DBdLxnk7Eb5bcdRDz0l0LJOm29l+oB7aYpkM3d81zisk/inZALI2jJuNuFbK0QfOY+b6sN44GRqHtu3afmsCzxh4NirCpCufK5x4VRN7JFbtk8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752126346; c=relaxed/simple; bh=pa2kEI1WfBR8fzB6LnCgz8H6Hr/rJ33G77S5rw0gzH0=; h=Date:To:From:Subject:Message-Id; b=loNqObauvZK2Y/3Wzm0+SH1C08hgm63WKVA98Rn+hAnLkzds5UmA06G1GwfoZtavs3yrZJ1KxJjSBcRt470xVUkcZehOqpCxlJCCl/X4GD+8BBeiXQuZenGYroDm7HhgM/SL9p7FxV7/t6b/MZ3UUQtWZnXW9+uaoDFGeNo39dM= 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=HLP6Dxia; 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="HLP6Dxia" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6F035C4CEF4; Thu, 10 Jul 2025 05:45:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1752126346; bh=pa2kEI1WfBR8fzB6LnCgz8H6Hr/rJ33G77S5rw0gzH0=; h=Date:To:From:Subject:From; b=HLP6DxiapWU7HABl8JmqGKPNmvffeSKz9IjiNzuWcWQbElOBkXXgByoC8K4lTSRZT cwOy7G33pP71BmpE/SQYfoN2M0CKpQ8UrRgaxmcbf6EjV6cJva3OygB0Zk4Fct4b1m E/9koKhiXTDUJcnk3Mzc+zFEUXG1U1wwVO6gq3yA= Date: Wed, 09 Jul 2025 22:45:45 -0700 To: mm-commits@vger.kernel.org,zhang.lyra@gmail.com,willy@infradead.org,will@kernel.org,m.szyprowski@samsung.com,lorenzo.stoakes@oracle.com,john@groves.net,jhubbard@nvidia.com,jgg@nvidia.com,hch@lst.de,gerald.schaefer@linux.ibm.com,debug@rivosinc.com,david@redhat.com,dan.j.williams@intel.com,bjorn@rivosinc.com,bjorn@kernel.org,balbirs@nvidia.com,apopple@nvidia.com,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] mm-khugepaged-remove-redundant-pmd_devmap-check.patch removed from -mm tree Message-Id: <20250710054546.6F035C4CEF4@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/khugepaged: remove redundant pmd_devmap() check has been removed from the -mm tree. Its filename was mm-khugepaged-remove-redundant-pmd_devmap-check.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: Alistair Popple Subject: mm/khugepaged: remove redundant pmd_devmap() check Date: Thu, 19 Jun 2025 18:58:00 +1000 The pmd_devmap() check in check_pmd_state() is redundant because the only user of pmd_devmap were device dax and fs dax. However all callers of check_pmd_state() first call thp_vma_allowable_order() to check if the vma should be scanned. Except when called from a page fault this always returns 0 for dax vma's, hence we would never expect to see a pmd_devmap entry. Link: https://lkml.kernel.org/r/a68175fd3a37e9b72cc82c1d63fd8b69691a85b5.1750323463.git-series.apopple@nvidia.com Signed-off-by: Alistair Popple Acked-by: David Hildenbrand Reviewed-by: Jason Gunthorpe Cc: Balbir Singh Cc: Björn Töpel Cc: Björn Töpel Cc: Christoph Hellwig Cc: Chunyan Zhang Cc: Dan Williams Cc: Deepak Gupta Cc: Gerald Schaefer Cc: Inki Dae Cc: John Groves Cc: John Hubbard Cc: Lorenzo Stoakes Cc: Matthew Wilcox (Oracle) Cc: Will Deacon Signed-off-by: Andrew Morton --- mm/khugepaged.c | 2 -- 1 file changed, 2 deletions(-) --- a/mm/khugepaged.c~mm-khugepaged-remove-redundant-pmd_devmap-check +++ a/mm/khugepaged.c @@ -945,8 +945,6 @@ static inline int check_pmd_state(pmd_t return SCAN_PMD_NULL; if (pmd_trans_huge(pmde)) return SCAN_PMD_MAPPED; - if (pmd_devmap(pmde)) - return SCAN_PMD_NULL; if (pmd_bad(pmde)) return SCAN_PMD_NULL; return SCAN_SUCCEED; _ Patches currently in -mm which might be from apopple@nvidia.com are