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 1E5D0BE65 for ; Fri, 4 Jul 2025 00:59:28 +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=1751590768; cv=none; b=b3roa3WOXRpckE4LhOrrRfsoCDGPUDnAnhmvcPcnJvw6T6u2uaWJOC+ZuGGjbKRgGKwreB/UUq6Tmt4R3jeTSD6jgq87zxvbbiwF3HycXu7IRk1pKkBospyQFm9tLMCfPIVyByvR/udUT1lqsVpNsfD1byAm+GFxU9DxxMxLvJ4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751590768; c=relaxed/simple; bh=he9OPp9NTebsGF1yz8+ahfA1FB8NBKAzFjOk8ZklVKo=; h=Date:To:From:Subject:Message-Id; b=Qt/gm8oJ+whPnfSao6GaaCdTMhnRJ+63Erva6r/sw8s2/HqzVepBTUTyVbCNZHcd9cP+DiVnouTUZb+QI1LwOfzujmrSJvhWrXQK0wxSqWK4SK6gxxok11LjQa6uhxfy6ZEVGOTHgJmwIDPHLpBFNv7uc/zOBe/jhtSioRINWy4= 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=yo5vAsf9; 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="yo5vAsf9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DED2AC4CEE3; Fri, 4 Jul 2025 00:59:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1751590768; bh=he9OPp9NTebsGF1yz8+ahfA1FB8NBKAzFjOk8ZklVKo=; h=Date:To:From:Subject:From; b=yo5vAsf9Yt6W3lq20NXCqAnZFABvxfUdZyszhFyfRWiLwPs5syNdrkUN8LKwh5l44 rGGmi15Be97z6DA0y0/Ldktb9HzCcWGlLElhGU1z53TGEeCmheoTOSNLLAHuXPpcfG +/fUEKP3ozqsXU3S4WMgtcDk9mLy7nNwc7Pkf0BA= Date: Thu, 03 Jul 2025 17:59:27 -0700 To: mm-commits@vger.kernel.org,zokeefe@google.com,ziy@nvidia.com,willy@infradead.org,will@kernel.org,wangkefeng.wang@huawei.com,vishal.moola@gmail.com,usamaarif642@gmail.com,tiwai@suse.de,thomas.hellstrom@linux.intel.com,surenb@google.com,sunnanyong@huawei.com,ryan.roberts@arm.com,rostedt@goodmis.org,rientjes@google.com,rdunlap@infradead.org,raquini@redhat.com,peterx@redhat.com,npache@redhat.com,mhocko@suse.com,mhiramat@kernel.org,mathieu.desnoyers@efficios.com,lorenzo.stoakes@oracle.com,liam.howlett@oracle.com,kirill.shutemov@linux.intel.com,jack@suse.cz,hannes@cmpxchg.org,dev.jain@arm.com,david@redhat.com,corbet@lwn.net,cl@gentwo.org,catalin.marinas@arm.com,baohua@kernel.org,bagasdotme@gmail.com,anshuman.khandual@arm.com,aarcange@redhat.com,baolin.wang@linux.alibaba.com,akpm@linux-foundation.org From: Andrew Morton Subject: + khugepaged-allow-khugepaged-to-check-all-anonymous-mthp-orders.patch added to mm-new branch Message-Id: <20250704005927.DED2AC4CEE3@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: khugepaged: allow khugepaged to check all anonymous mTHP orders has been added to the -mm mm-new branch. Its filename is khugepaged-allow-khugepaged-to-check-all-anonymous-mthp-orders.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/khugepaged-allow-khugepaged-to-check-all-anonymous-mthp-orders.patch This patch will later appear in the mm-new branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Note, mm-new is a provisional staging ground for work-in-progress patches, and acceptance into mm-new is a notification for others take notice and to finish up reviews. Please do not hesitate to respond to review feedback and post updated versions to replace or incrementally fixup patches in mm-new. Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Baolin Wang Subject: khugepaged: allow khugepaged to check all anonymous mTHP orders Date: Tue, 1 Jul 2025 23:57:37 -0600 We have now allowed mTHP collapse, but thp_vma_allowable_order() still only checks if the PMD-sized mTHP is allowed to collapse. This prevents scanning and collapsing of 64K mTHP when only 64K mTHP is enabled. Thus, we should modify the checks to allow all large orders of anonymous mTHP. Link: https://lkml.kernel.org/r/20250702055742.102808-11-npache@redhat.com Signed-off-by: Baolin Wang Signed-off-by: Nico Pache Cc: Andrea Arcangeli Cc: Anshuman Khandual Cc: Bagas Sanjaya Cc: Barry Song Cc: Catalin Marinas Cc: Christoph Lameter (Ampere) Cc: David Hildenbrand Cc: David Rientjes Cc: Dev Jain Cc: Jan Kara Cc: Johannes Weiner Cc: Jonathan Corbet Cc: Kefeng Wang Cc: Kirill A. Shuemov Cc: Liam Howlett Cc: Lorenzo Stoakes Cc: "Masami Hiramatsu (Google)" Cc: Mathieu Desnoyers Cc: Matthew Wilcox (Oracle) Cc: Michal Hocko Cc: Nanyong Sun Cc: Peter Xu Cc: Rafael Aquini Cc: Randy Dunlap Cc: Reported-by:Takashi Iwai Cc: Ryan Roberts Cc: Steven Rostedt Cc: Suren Baghdasaryan Cc: Thomas Hellstrom Cc: Usama Arif Cc: Vishal Moola (Oracle) Cc: Will Deacon Cc: Zach O'Keefe Cc: Zi Yan Signed-off-by: Andrew Morton --- mm/khugepaged.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) --- a/mm/khugepaged.c~khugepaged-allow-khugepaged-to-check-all-anonymous-mthp-orders +++ a/mm/khugepaged.c @@ -491,8 +491,11 @@ void khugepaged_enter_vma(struct vm_area { if (!test_bit(MMF_VM_HUGEPAGE, &vma->vm_mm->flags) && hugepage_pmd_enabled()) { - if (thp_vma_allowable_order(vma, vm_flags, TVA_ENFORCE_SYSFS, - PMD_ORDER)) + unsigned long orders = vma_is_anonymous(vma) ? + THP_ORDERS_ALL_ANON : BIT(PMD_ORDER); + + if (thp_vma_allowable_orders(vma, vm_flags, TVA_ENFORCE_SYSFS, + orders)) __khugepaged_enter(vma->vm_mm); } } @@ -2612,6 +2615,8 @@ static unsigned int khugepaged_scan_mm_s vma_iter_init(&vmi, mm, khugepaged_scan.address); for_each_vma(vmi, vma) { + unsigned long orders = vma_is_anonymous(vma) ? + THP_ORDERS_ALL_ANON : BIT(PMD_ORDER); unsigned long hstart, hend; cond_resched(); @@ -2619,8 +2624,8 @@ static unsigned int khugepaged_scan_mm_s progress++; break; } - if (!thp_vma_allowable_order(vma, vma->vm_flags, - TVA_ENFORCE_SYSFS, PMD_ORDER)) { + if (!thp_vma_allowable_orders(vma, vma->vm_flags, + TVA_ENFORCE_SYSFS, orders)) { skip: progress++; continue; _ Patches currently in -mm which might be from baolin.wang@linux.alibaba.com are mm-fix-the-inaccurate-memory-statistics-issue-for-users.patch selftests-khugepaged-fix-the-shmem-collapse-failure.patch selftests-mm-add-shmem-collapse-as-a-default-test-item.patch mm-huge_memory-fix-the-check-for-allowed-huge-orders-in-shmem.patch khugepaged-allow-khugepaged-to-check-all-anonymous-mthp-orders.patch khugepaged-kick-khugepaged-for-enabling-none-pmd-sized-mthps.patch