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 6590937BE75 for ; Mon, 29 Jun 2026 17:22:50 +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=1782753771; cv=none; b=W2vmbeSY2iDX844MqjM3/nIWIHDB74nySZtBTHczAmKv9fMxWH5gTFVfqFjvS0BRCe+Gen0htNojv2EP1qClJJKqpYET8GqCRIKxnEBfs9f4zqpOFKm7v1U20IMrkVyau6W9uCUA/c0vm9VfYHKFBftAcGZaLvY1R62DafK7GEY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782753771; c=relaxed/simple; bh=aiqg3Gu9P8um88x5hGYKNQjoQuUe5b+oPm2kF0BlP08=; h=Date:To:From:Subject:Message-Id; b=KhCey8tQ/yqDbdCtMvolZjJYVvpPyhUsIt/hJyyqu9saif8W3LEgcVpuX4/3LxCFXFlUbLevxf1gLz28M4KvzWy/Bd4IZCuFL0bjp4o+Tvno3YZuFs80Bjfy3W47M+2YZgG2qHamIDvjvSlDOjUTo6WIzGEYd3k0LAgrfop+WoI= 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=HnwFtJGi; 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="HnwFtJGi" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2ACAB1F000E9; Mon, 29 Jun 2026 17:22:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1782753770; bh=WAYmfbiI66DrVNi24CexTpUaim+DIOAzjVPWd8Ie1Hw=; h=Date:To:From:Subject; b=HnwFtJGiqFHQKQ8bstn1dC1espORd/U2EZy12tP0pBVQ3p9nKvtl4SH1ouNnKMhdD SQU2caqVHRyBXrfanYwQNc/2UNa8Ptf30w3MBhOo8aKQz6pSaoer5ZKxA92D0P2NG7 diQuj1PDXWfnEwQ9EJ442bCXpKQWrj+HMJ5BqOX4= Date: Mon, 29 Jun 2026 10:22:49 -0700 To: mm-commits@vger.kernel.org,vbabka@kernel.org,surenb@google.com,rppt@kernel.org,peterz@infradead.org,osalvador@kernel.org,mhocko@suse.com,ljs@kernel.org,liam@infradead.org,jannh@google.com,davem@davemloft.net,andreas@gaisler.com,david@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-cleanup-clear_not_present_full_ptes-and-rename-to-clear_non_present_ptes.patch added to mm-new branch Message-Id: <20260629172250.2ACAB1F000E9@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: mm: cleanup clear_not_present_full_ptes() and rename to clear_non_present_ptes() has been added to the -mm mm-new branch. Its filename is mm-cleanup-clear_not_present_full_ptes-and-rename-to-clear_non_present_ptes.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-cleanup-clear_not_present_full_ptes-and-rename-to-clear_non_present_ptes.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: "David Hildenbrand (Arm)" Subject: mm: cleanup clear_not_present_full_ptes() and rename to clear_non_present_ptes() Date: Mon, 29 Jun 2026 15:49:49 +0200 Let's clean it up a bit: (1) There is no need to pass "full" anymore. (2) No architecture overwrites it, and there isn't really a good reason to do so when dealing with non-resent PTEs. (3) While at it, call it "non-present", similar to copy_nonpresent_pte() and zap_nonpresent_ptes(). It's a shame that we have clear_non_present_ptes() correspond to pte_clear() and clear_ptes() correspond to ptep_get_and_clear*(). Link: https://lore.kernel.org/20260629-clear_not_present_full_ptes-v2-3-96089871a1e7@kernel.org Signed-off-by: David Hildenbrand (Arm) Reviewed-by: Oscar Salvador (SUSE) Cc: Andreas Larsson Cc: David S. Miller Cc: Jann Horn Cc: Liam R. Howlett Cc: Lorenzo Stoakes Cc: Michal Hocko Cc: Mike Rapoport Cc: Peter Zijlstra Cc: Suren Baghdasaryan Cc: Vlastimil Babka Signed-off-by: Andrew Morton --- include/linux/pgtable.h | 14 ++++---------- mm/madvise.c | 2 +- mm/memory.c | 2 +- 3 files changed, 6 insertions(+), 12 deletions(-) --- a/include/linux/pgtable.h~mm-cleanup-clear_not_present_full_ptes-and-rename-to-clear_non_present_ptes +++ a/include/linux/pgtable.h @@ -988,24 +988,19 @@ static inline void update_mmu_tlb(struct update_mmu_tlb_range(vma, address, ptep, 1); } -#ifndef clear_not_present_full_ptes /** - * clear_not_present_full_ptes - Clear multiple not present PTEs which are - * consecutive in the pgtable. + * clear_nonpresent_ptes - Clear multiple non-present PTEs which are + * consecutive in the pgtable. * @mm: Address space the ptes represent. * @addr: Address of the first pte. * @ptep: Page table pointer for the first entry. * @nr: Number of entries to clear. - * @full: Whether we are clearing a full mm. - * - * May be overridden by the architecture; otherwise, implemented as a simple - * loop over pte_clear(). * * Context: The caller holds the page table lock. The PTEs are all not present. * The PTEs are all in the same PMD. */ -static inline void clear_not_present_full_ptes(struct mm_struct *mm, - unsigned long addr, pte_t *ptep, unsigned int nr, int full) +static inline void clear_nonpresent_ptes(struct mm_struct *mm, + unsigned long addr, pte_t *ptep, unsigned int nr) { (void)addr; @@ -1017,7 +1012,6 @@ static inline void clear_not_present_ful addr += PAGE_SIZE; } } -#endif #ifndef __HAVE_ARCH_PTEP_CLEAR_FLUSH extern pte_t ptep_clear_flush(struct vm_area_struct *vma, --- a/mm/madvise.c~mm-cleanup-clear_not_present_full_ptes-and-rename-to-clear_non_present_ptes +++ a/mm/madvise.c @@ -695,7 +695,7 @@ static int madvise_free_pte_range(pmd_t nr = swap_pte_batch(pte, max_nr, ptent); nr_swap -= nr; swap_put_entries_direct(entry, nr); - clear_not_present_full_ptes(mm, addr, pte, nr, tlb->fullmm); + clear_nonpresent_ptes(mm, addr, pte, nr); } else if (softleaf_is_hwpoison(entry) || softleaf_is_poison_marker(entry)) { pte_clear(mm, addr, pte); --- a/mm/memory.c~mm-cleanup-clear_not_present_full_ptes-and-rename-to-clear_non_present_ptes +++ a/mm/memory.c @@ -1797,7 +1797,7 @@ static inline int zap_nonpresent_ptes(st pr_alert("unrecognized swap entry 0x%lx\n", entry.val); WARN_ON_ONCE(1); } - clear_not_present_full_ptes(vma->vm_mm, addr, pte, nr, tlb->fullmm); + clear_nonpresent_ptes(vma->vm_mm, addr, pte, nr); *any_skipped = zap_install_uffd_wp_if_needed(vma, addr, pte, nr, details, ptent); return nr; _ Patches currently in -mm which might be from david@kernel.org are sparc-mm-drop-custom-pte_clear_not_present_full.patch mm-drop-pte_clear_not_present_full.patch mm-cleanup-clear_not_present_full_ptes-and-rename-to-clear_non_present_ptes.patch