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 ACBF618DB1A for ; Fri, 24 Jul 2026 00:37:33 +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=1784853454; cv=none; b=MnsInbHClk+bRqj6J6vYH/EkE9VWXciwFMHLCF4HKJn+KxCoEAR94WBNbR/qbd78h8yIAFJYh7GHIva2qYOKh7wpjQG/622L3z1zTfFe00JkcbboCRIxyi0KwG7w9qsxKTPyd7olIGbyRVbDIzuxQTxKARDLI+yAoiYrJxN8A+g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784853454; c=relaxed/simple; bh=CMWuewrP+TQCjxEBYxBzeWUDMtr1N6bS2wa9d1QWdn4=; h=Date:To:From:Subject:Message-Id; b=TzNLd4Er5Tz2qsuXe9Xd5Il6tEPQr7I+KGeqlypxyELxgI7Y8BGgkT+9qfSeK9uqiDvQZSht3fWZVvowp449fjdAw0mfsDZPGJbAErE/b1zFjew8tBO5YJ+MIYcAKLhAcZsKLBPIZBWpClkxdGQ3t6T9lfL6bd+pZ3FHiHQjGjI= 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=LzdkGOlp; 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="LzdkGOlp" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4E90F1F000E9; Fri, 24 Jul 2026 00:37:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1784853453; bh=mte7IK9RPJCOamNchoyTeFaoZBfIk0W0BNAb7RHyEGo=; h=Date:To:From:Subject; b=LzdkGOlpV+e/DRqiUgC4RASg/jKHqqlF2y43dfdzN0BF3Rhm0vZ6/u72FvHdBXYIB jkeSZCKqZ7nzYPzDso10RSq+xTvGkWX1Vf5IjxLCSAOzGAIVEeS9y2d42mIw++IvNN 12nUfBjR0tZGFWuAR6st2W+Nazcj1wVSZ30Q+jSY= Date: Thu, 23 Jul 2026 17:37:32 -0700 To: mm-commits@vger.kernel.org,vbabka@kernel.org,surenb@google.com,rppt@kernel.org,mhocko@suse.com,ljs@kernel.org,liam@infradead.org,david@kernel.org,lihongfu@kylinos.cn,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-use-a-folio-in-the-softleaf_is_device_private-path.patch added to mm-new branch Message-Id: <20260724003733.4E90F1F000E9@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: mm: use a folio in the softleaf_is_device_private path has been added to the -mm mm-new branch. Its filename is mm-use-a-folio-in-the-softleaf_is_device_private-path.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-use-a-folio-in-the-softleaf_is_device_private-path.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: Hongfu Li Subject: mm: use a folio in the softleaf_is_device_private path Date: Thu, 23 Jul 2026 11:07:51 +0800 Patch series "mm: folio conversion and refactoring in do_swap_page()", v2. Convert the device-private migration path in do_swap_page() to use folio APIs, then extract all non-swap entry handling into a new do_non_swap_page() helper to improve readability and reduce the size of the main swap fault function. This patch (of 2): Use the folio APIs in the device_private migration path of do_swap_page(), replacing four calls to compound_head() with one. Link: https://lore.kernel.org/20260723030752.16979-1-hongfu.li@linux.dev Link: https://lore.kernel.org/20260723030752.16979-2-hongfu.li@linux.dev Signed-off-by: Hongfu Li Acked-by: David Hildenbrand (Arm) Cc: Hongfu Li Cc: Liam R. Howlett Cc: Lorenzo Stoakes Cc: Michal Hocko Cc: Mike Rapoport Cc: Suren Baghdasaryan Cc: Vlastimil Babka Signed-off-by: Andrew Morton --- mm/memory.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) --- a/mm/memory.c~mm-use-a-folio-in-the-softleaf_is_device_private-path +++ a/mm/memory.c @@ -4922,18 +4922,19 @@ vm_fault_t do_swap_page(struct vm_fault goto unlock; /* - * Get a page reference while we know the page can't be + * Get a folio reference while we know the folio can't be * freed. */ - if (trylock_page(vmf->page)) { + folio = page_folio(vmf->page); + if (folio_trylock(folio)) { struct dev_pagemap *pgmap; - get_page(vmf->page); + folio_get(folio); pte_unmap_unlock(vmf->pte, vmf->ptl); pgmap = page_pgmap(vmf->page); ret = pgmap->ops->migrate_to_ram(vmf); - unlock_page(vmf->page); - put_page(vmf->page); + folio_unlock(folio); + folio_put(folio); } else { pte_unmap(vmf->pte); softleaf_entry_wait_on_locked(entry, vmf->ptl); _ Patches currently in -mm which might be from lihongfu@kylinos.cn are selftests-mm-move-pkey-selftest-helpers-to-pkey_utilc.patch selftests-mm-unify-pkey-sighandler-selftest-assertions-and-tracing.patch selftests-mm-use-pkey_assert-on-clone_raw-failure-in-pkey-test.patch selftests-mm-add-missing-mmap-return-checks-in-pkey-tests.patch selftests-mm-add-missing-pthread_create-return-checks-in-pkey-tests.patch selftests-mm-fix-clone-cleartid-race-in-pkey-sighandler-tests.patch selftests-mm-fix-memleak-in-migration-benchmark.patch selftests-mm-factor-out-hmm_buffer_alloc-to-consolidate-buffer-setup.patch selftests-mm-fix-bug_on-checking-wrong-variable-in-mremap_dontunmap.patch mm-swap-fix-swap_cluster_lock-config_swap-stub-signature-mismatch.patch mm-use-a-folio-in-the-softleaf_is_device_private-path.patch mm-extract-non-swap-page-handling-to-do_non_swap_page.patch