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 B0202399369 for ; Tue, 1 Sep 2026 04:20:31 +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=1788236432; cv=none; b=JyyvvpFs5fiWz155Q61/Mpsbgp93VTA4DlFv7MBNzdCv2Toaqpo45wpXBgarCFm/LfDeqvSkW1dfDfD54+14YDHXogSqkroPik3k6WavWrmgO9XRrh8u5uFxvAa6mMgZwUetF9IFrvT9YKiLEDB+8XahkUr7CzxmGxepm+C0j3Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788236432; c=relaxed/simple; bh=zh0GOwYQaecDw498iUU8hMP00jPxSjEYJKg4Je94YxY=; h=Date:To:From:Subject:Message-Id; b=PANQolDzRSSN50iPQ97Hyk6tKWG9huws71pzNoSCkf4TvkOIvGD4xg04KyxJFMYsOJA/gnCTzTDlgKgqQ+2QqNmLES3QG+snlU9QqjJ5MMtFSyULzn1/XdJL1VTqQ/9FdsMkM7Wtd6ZjcT4Slye9Gx0KBEUfnfawK61/aZ+OUqE= 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=McwbDFkv; 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="McwbDFkv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3C5B81F000E9; Tue, 1 Sep 2026 04:20:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1788236431; bh=oBzuna+O8TZ4zREF6NrnBHkoKtu/bhdI7L5UEGRmsOc=; h=Date:To:From:Subject; b=McwbDFkvUGubeJQwijuJW3MqjUfFLRLw+cLZgCaGoipRbxLd9gfJKK1lY2RsQPzUA evOoKLfyZbki2TonEuetm26uIcsRSZyUk8Imw7CHetLu5OYv+pzsc+N5qJuxdiVNAT P3c9TVPs+O+t6plMYumD+cFC92B4PHKSFt1kqiig= Date: Mon, 31 Aug 2026 21:20:30 -0700 To: mm-commits@vger.kernel.org,peterx@redhat.com,jhubbard@nvidia.com,jgg@ziepe.ca,david@kernel.org,aris@ruivo.org,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-gup-move-pmd_protnone-into-gup_fast_pmd_leaf.patch added to mm-new branch Message-Id: <20260901042031.3C5B81F000E9@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: mm: gup: move pmd_protnone() into gup_fast_pmd_leaf() has been added to the -mm mm-new branch. Its filename is mm-gup-move-pmd_protnone-into-gup_fast_pmd_leaf.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-gup-move-pmd_protnone-into-gup_fast_pmd_leaf.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: Aristeu Rozanski Subject: mm: gup: move pmd_protnone() into gup_fast_pmd_leaf() Date: Thu, 27 Aug 2026 21:55:43 -0400 Patch series "mm: gup: cleanup gup_fast call chain", v3. These two patches implement the refactor in gup_fast call chain David Hildenbrand mentioned in [1]. This patch (of 2): Make pmd handling match pud handling by calling pmd_protnone() inside gup_fast_pmd_leaf(). Link: https://lore.kernel.org/20260828015542.125576330@ruivo.org Link: https://lore.kernel.org/20260828015542.245315718@ruivo.org Link: https://lore.kernel.org/all/85e760cf-b994-40db-8d13-221feee55c60@redhat.com/T/#u [1] Signed-off-by: Aristeu Rozanski Suggested-by: David Hildenbrand Link: https://lore.kernel.org/all/85e760cf-b994-40db-8d13-221feee55c60@redhat.com/T/#u Cc: Jason Gunthorpe Cc: John Hubbard Cc: Peter Xu Signed-off-by: Andrew Morton --- mm/gup.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) --- a/mm/gup.c~mm-gup-move-pmd_protnone-into-gup_fast_pmd_leaf +++ a/mm/gup.c @@ -2929,6 +2929,10 @@ static int gup_fast_pmd_leaf(pmd_t orig, struct folio *folio; int refs; + /* See gup_fast_pte_range() */ + if (pmd_protnone(orig)) + return 0; + if (!pmd_access_permitted(orig, flags & FOLL_WRITE)) return 0; @@ -3024,10 +3028,6 @@ static int gup_fast_pmd_range(pud_t *pud return 0; if (unlikely(pmd_leaf(pmd))) { - /* See gup_fast_pte_range() */ - if (pmd_protnone(pmd)) - return 0; - if (!gup_fast_pmd_leaf(pmd, pmdp, addr, next, flags, pages, nr)) return 0; _ Patches currently in -mm which might be from aris@ruivo.org are mm-gup-move-pmd_protnone-into-gup_fast_pmd_leaf.patch mm-gup-cleanup-the-gup_fast_-call-chain.patch