From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 A3B4A49B5C1 for ; Thu, 10 Sep 2026 21:56:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789077364; cv=none; b=IwjvqCA5Vc6n9+nck+xmnD6lVOPsdn6oDIXs/nO7lT4mmTkUA7erpAZp/GYNry3pcHGeC8lG0igpiOOnCLEbatgIyVJAf+wAgROiJVu1AEWT78sjqfwpy1Issx95agvxKtvSRyvIh3XL5a+HFO9B2yi0Hja2xnRa5ex2TVEMJB0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789077364; c=relaxed/simple; bh=2RiXZTlYcq5xzEUvoXntpsz22W+IYAVe5854aRYZAik=; h=Date:To:From:Subject:Message-Id; b=juSunr9/Rbpd3R1NCCiF9lQzzZTCCZ6xIjO+qUS61FuFzUJIx9GEQNfqGJG61PqJkYYUS41a6VQna7VUujgLIhOYgaLSqPt21Y0c7sYp0rI9t8kEzvVqt0vyvq6aF9dSDKceb47zWvwbhtM8NyjJuFY9Q8GDIjz743AbDEerSY8= 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=jqK6CR57; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="jqK6CR57" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6489D1F000FF; Thu, 10 Sep 2026 21:56:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1789077363; bh=FhaStHjaIZM/npXlN0knZT0vY+Sagbk8rT0yofqV66s=; h=Date:To:From:Subject; b=jqK6CR57fVPc/91vZxwPpZadqUaqQvIgHVdZl4ut0P4NZW2e+2Wy4bH0KcMo9hw0Y AJvVS+iVkE0IyUu3PeSj4i1YngdesMC1J7t25KZ71v7i2fWXCs88i3ETD7rp/ba/H+ fU2qfppLag3RlvgNEPzuFu+uQlQrXYvHRwEuNSTQ= Date: Thu, 10 Sep 2026 14:56:02 -0700 To: mm-commits@vger.kernel.org,ziy@nvidia.com,vbabka@kernel.org,ryan.roberts@arm.com,ljs@kernel.org,liam@infradead.org,lance.yang@linux.dev,jannh@google.com,dev.jain@arm.com,david@kernel.org,baolin.wang@linux.alibaba.com,baohua@kernel.org,kas@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-collapse-drop-the-collapse_possible-wrapper.patch added to mm-new branch Message-Id: <20260910215603.6489D1F000FF@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: mm/collapse: drop the collapse_possible() wrapper has been added to the -mm mm-new branch. Its filename is mm-collapse-drop-the-collapse_possible-wrapper.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-collapse-drop-the-collapse_possible-wrapper.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. The mm-new branch of mm.git is not included in linux-next If a few days of testing in mm-new is successful, the patch will me moved into mm.git's mm-unstable branch, which is included in linux-next 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 various branches at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there most days ------------------------------------------------------ From: "Kiryl Shutsemau (Meta)" Subject: mm/collapse: drop the collapse_possible() wrapper Date: Thu, 10 Sep 2026 13:02:26 +0100 collapse_possible() only forwards to collapse_possible_orders() and turns its mask into a bool. Its three callers can test the mask themselves. No functional change. Assisted-by: LLM Link: https://lore.kernel.org/20260910120238.2529819-7-kirill@shutemov.name Signed-off-by: Kiryl Shutsemau (Meta) Reviewed-by: Zi Yan Reviewed-by: Baolin Wang Cc: Barry Song Cc: David Hildenbrand Cc: Dev Jain Cc: Jann Horn Cc: Lance Yang Cc: Liam R. Howlett Cc: Lorenzo Stoakes Cc: Ryan Roberts Cc: Vlastimil Babka Signed-off-by: Andrew Morton --- mm/khugepaged.c | 15 +++++---------- 1 file changed, 5 insertions(+), 10 deletions(-) --- a/mm/khugepaged.c~mm-collapse-drop-the-collapse_possible-wrapper +++ a/mm/khugepaged.c @@ -512,17 +512,11 @@ static unsigned long collapse_possible_o return thp_vma_allowable_orders(vma, vm_flags, tva_flags, orders); } -static bool collapse_possible(struct vm_area_struct *vma, - vm_flags_t vm_flags, enum tva_type tva_flags) -{ - return collapse_possible_orders(vma, vm_flags, tva_flags); -} - void khugepaged_enter_vma(struct vm_area_struct *vma, vm_flags_t vm_flags) { - if (!mm_flags_test(MMF_VM_HUGEPAGE, vma->vm_mm) && hugepage_enabled() - && collapse_possible(vma, vm_flags, TVA_KHUGEPAGED)) + if (!mm_flags_test(MMF_VM_HUGEPAGE, vma->vm_mm) && hugepage_enabled() && + collapse_possible_orders(vma, vm_flags, TVA_KHUGEPAGED)) __khugepaged_enter(vma->vm_mm); } @@ -2857,7 +2851,8 @@ static void collapse_scan_mm_slot(unsign cc->progress++; break; } - if (!collapse_possible(vma, vma->vm_flags, TVA_KHUGEPAGED)) { + if (!collapse_possible_orders(vma, vma->vm_flags, + TVA_KHUGEPAGED)) { cc->progress++; continue; } @@ -3170,7 +3165,7 @@ int madvise_collapse(struct vm_area_stru BUG_ON(vma->vm_start > start); BUG_ON(vma->vm_end < end); - if (!collapse_possible(vma, vma->vm_flags, TVA_FORCED_COLLAPSE)) + if (!collapse_possible_orders(vma, vma->vm_flags, TVA_FORCED_COLLAPSE)) return -EINVAL; hstart = ALIGN(start, HPAGE_PMD_SIZE); _ Patches currently in -mm which might be from kas@kernel.org are mm-huge_memory-do-not-touch-frozen-folios-in-deferred_split_isolate.patch mm-huge_memory-dequeue-the-deferred-split-after-the-split-freeze.patch mm-huge_memory-add-folio_reset_partially_mapped.patch mm-khugepaged-drop-redundant-mm_struct-pin-in-madvise_collapse.patch mm-khugepaged-count-collapses-where-khugepaged-makes-them.patch mm-khugepaged-rename-mthp_present_ptes-bitmap-to-eligible_ptes.patch mm-collapse-add-collapseh-for-the-collapse-interface.patch mm-collapse-state-what-a-collapse-may-do-in-the-policy.patch mm-collapse-drop-the-collapse_possible-wrapper.patch mm-collapse-name-the-per-table-scan-reset-for-what-it-resets.patch mm-collapse-separate-scanning-a-pte-table-from-collapsing-it.patch mm-collapse-open-code-collapse_single_pmd-in-its-two-callers.patch mm-collapse-work-out-the-orders-a-vma-allows-once-per-vma.patch mm-collapse-declare-the-collapse-interface-in-collapseh.patch mm-collapse-implement-madv_collapse-in-madvisec.patch