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 45FC1502567 for ; Mon, 28 Sep 2026 22:01:41 +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=1790632903; cv=none; b=cRZ8WKGyP4KStHvhPmye4TUZF3kwrLxVm4KbyjV/Jctbg4fqomGPJX/1HuR5slq/vpyFgFLrBV3Qt+NNRVxQzrNOHk7qpMjUEVLwXzMmBQxTE2kc4ayWE2JfveM0uronZPNanEK8lmyB2scT/k4AKGA4MsBzffzTzI2i17BlgW0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790632903; c=relaxed/simple; bh=7Za8e9tW2ZUg8JTpPwBonZVoH+Hn18+WWg6sGMnZzcU=; h=Date:To:From:Subject:Message-Id; b=M+ETO2jBfxjEgO08lf/RgYz8RfDInCIs5bDPW+CQabVfzIa3no8MDOTEurbfSw9F9j/mxifo4RI+uLkLFjkp14eXtAbUSqwvP0TzjthjH6BO+4HvrA5zMvZ5TmIKKiEp3ggCUlHuCUZ2OvxRIe0eUYwR+1OYmFxhlRZn3xB4azI= 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=Qc6gQ23z; 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="Qc6gQ23z" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DBC231F00893; Mon, 28 Sep 2026 22:01:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1790632901; bh=FeZucr8mDgrMoN/d41k5oa0rISAQhErEaGrmM7m/bDE=; h=Date:To:From:Subject; b=Qc6gQ23zlktopVcZa/CbZeLWw40ZJOQ4lrYYbWSeqSxqDH1KI6MJER4Sbwmh2aLKG fgARhso9VrkvZwmBLB2nwNRx4y1BoViH+6YMuwxqLNpQwwcO6NBHeGGAYMDoV7RN+h uOZb0wolmQ3cbdewFQbjoE0Md4sC9lmJas0YtcKM= Date: Mon, 28 Sep 2026 15:01:40 -0700 To: mm-commits@vger.kernel.org,kas@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-collapse-drop-the-collapse_possible-wrapper.patch added to mm-unstable branch Message-Id: <20260928220140.DBC231F00893@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-unstable 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-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm 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: Mon, 28 Sep 2026 11:06:20 +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. Link: https://lore.kernel.org/20260928100630.21870-7-kirill@shutemov.name Signed-off-by: Kiryl Shutsemau (Meta) Signed-off-by: Andrew Morton Acked-by: David Hildenbrand (Arm) Reviewed-by: Zi Yan Reviewed-by: Baolin Wang Assisted-by: LLM Cc: Lorenzo Stoakes Cc: Liam R. Howlett Cc: Nico Pache Cc: Ryan Roberts Cc: Dev Jain Cc: Barry Song Cc: Lance Yang Cc: Usama Arif Cc: Vlastimil Babka Cc: Jann Horn --- 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 @@ -494,17 +494,11 @@ 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); } @@ -2878,7 +2872,8 @@ 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; } @@ -3190,7 +3185,7 @@ 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-call-collapse_file-from-collapse_single_pmd.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 selftests-mm-raise-the-khugepaged-test-case-cap.patch selftests-mm-skip-collapse_compound_extreme-where-the-pmd-is-too-large.patch selftests-mm-scale-khugepageds-collapse-wait-with-the-pmd-size.patch selftests-mm-skip-khugepaged-page-cache-cases-without-a-pmd-folio.patch selftests-mm-make-the-swap-cases-swapout-reliable.patch selftests-mm-stop-khugepaged-during-the-madv_collapse-cases.patch selftests-mm-move-is_backed_by_folio-into-vm_util.patch selftests-mm-add-folio-order-check-for-address-ranges.patch selftests-mm-add-folio-order-detection-self-check.patch selftests-mm-add-khugepaged-completion-barrier-helper.patch selftests-mm-add-order-parameterized-khugepaged-collapse-cases.patch selftests-mm-parameterize-the-mixed-source-collapse-case-by-source-order.patch selftests-mm-cover-a-shared-source-collapse-write-race.patch selftests-mm-run-every-supported-collapse-order-by-default.patch selftests-mm-check-that-one-khugepaged-pass-collapses-one-window.patch selftests-mm-add-khugepaged-race-harness.patch selftests-mm-race-the-collapse-of-windows-with-holes.patch selftests-mm-add-memory-pressure-threads-to-the-khugepaged-race-harness.patch selftests-mm-zap-whole-pte-tables-in-the-khugepaged-race-harness.patch