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 34AAA33A6F2 for ; Mon, 28 Sep 2026 22:01:42 +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=1790632904; cv=none; b=IWuHKSaACC4nO3GbVYugjzdJC6I6FCO+Hz4fyj8tuRmFOl6tPnZTLipC1Vz00JQgl8EJcp9Hy2orgYzqgpTpQLM8kVm4PSxMcJRVS/pAdD/bML7s7zds68U9hhEtgx2CNeooo9VsUvB2Ww1emb1U9l+sj0lS2oVmHMCtGefWjzs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790632904; c=relaxed/simple; bh=fxQ4DNBp24g0/lRu/mJhIxRcTkYFWwclKr/Mpd0Yur0=; h=Date:To:From:Subject:Message-Id; b=oEMXm4aAFD5GXNmjV3pERU9lgtD+utxJPFJJ08DZ5ChyRqlEZ4Z1gEAunmFusSCvEqa7SNPdUF/8xOYtaAnPLJqCL4KJTG2NQgaYgeW7CQaAiKisD5vGeBZN9KKWyuequU7xz8KmwUsFNYO67JHwyVVw5YSMr+7vXyRlhw9r2WI= 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=v5OEaN2C; 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="v5OEaN2C" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C24C61F00898; Mon, 28 Sep 2026 22:01:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1790632902; bh=LSQdMVo6AQuu+cIqXjUPhkmvXpfE1Z9GSccjNTIkcGs=; h=Date:To:From:Subject; b=v5OEaN2CgWfO6OtPrQX+w81muBf6tgYLyNvHCgs1t28giMb7vMwnBsJFPaMUptWIz 9qUG7zrjyUw17TvYZkB/t+pIv6OnJxCFkZ1lrF6/jUy5EpWaeb5GHptC9C06G3R+8V 8VZrgeMgoONEn21kYLnUxXQZwf7Jqn2FxllNWDKU= Date: Mon, 28 Sep 2026 15:01:42 -0700 To: mm-commits@vger.kernel.org,kas@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-collapse-name-the-per-table-scan-reset-for-what-it-resets.patch added to mm-unstable branch Message-Id: <20260928220142.C24C61F00898@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: name the per-table scan reset for what it resets has been added to the -mm mm-unstable branch. Its filename is mm-collapse-name-the-per-table-scan-reset-for-what-it-resets.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-collapse-name-the-per-table-scan-reset-for-what-it-resets.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: name the per-table scan reset for what it resets Date: Mon, 28 Sep 2026 11:06:21 +0100 collapse_control_init_scan() resets what one scan accumulates: the node load, the allocation nodemask and the eligible-PTE bitmap. It runs before every PTE table a scan is given, not once per control, so its name points at the wrong thing. Call it collapse_scan_reset(). Preparation for giving a control a real init and release, run once each for a whole series of scans. Two names a word apart would then stand for two different jobs. No functional change. Link: https://lore.kernel.org/20260928100630.21870-8-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 | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/mm/khugepaged.c~mm-collapse-name-the-per-table-scan-reset-for-what-it-resets +++ a/mm/khugepaged.c @@ -532,7 +532,7 @@ void __khugepaged_exit(struct mm_struct } } -static void collapse_control_init_scan(struct collapse_control *cc) +static void collapse_scan_reset(struct collapse_control *cc) { memset(cc->node_load, 0, sizeof(cc->node_load)); nodes_clear(cc->alloc_nmask); @@ -1607,7 +1607,7 @@ static enum scan_result collapse_scan_pm goto out; } - collapse_control_init_scan(cc); + collapse_scan_reset(cc); enabled_orders = collapse_possible_orders(vma, vma->vm_flags, tva_flags); @@ -2678,7 +2678,7 @@ static enum scan_result collapse_scan_fi present = 0; swap = 0; - collapse_control_init_scan(cc); + collapse_scan_reset(cc); rcu_read_lock(); xas_for_each(&xas, folio, start + HPAGE_PMD_NR - 1) { if (xas_retry(&xas, folio)) _ 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