From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 4EDEC32A825 for ; Mon, 1 Sep 2025 18:43:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756752189; cv=none; b=ESDQVvUhLL5VqR9mW745se+kAt4Rdd6jfiRGbdCqoU55EB5Hwxohv9f3mlYV2CWliPhBwMIsQ2aGEvQ0YQ5EtgugAbL5mGaz5+9toqWSwFMriuNIfJ5ItMK5HtEqnpahJ63D7+7ZH7RiIq3PWEA7xPOpFLNQXUXPtajxd5Ojxek= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756752189; c=relaxed/simple; bh=m/GE4vN4Cj/OxAYV1u0zvHtLHN0i6DyUeDLTi411cKA=; h=Date:To:From:Subject:Message-Id; b=V3KIQC+B025IBnuYJvMnh8MaT7GKIMsv6y1q0hdxtNPnxcrBKnvvCDU0f3F454WFRaTJw07vr7wOFYmrQ+GfV4aKjfp8c8wHPEeJUmmMPtbQ1Sj2ebzzL68Esv2cmRXDJx0H9ZZhJfRzbDA10IoQSSI7aA0XCFZ2oZwKlQsMxYs= 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=yCICqOeD; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="yCICqOeD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 24959C4CEF0; Mon, 1 Sep 2025 18:43:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1756752189; bh=m/GE4vN4Cj/OxAYV1u0zvHtLHN0i6DyUeDLTi411cKA=; h=Date:To:From:Subject:From; b=yCICqOeDC5/vbOU06l/I9qHTGNLtbxozLXrnOdnRrDVLJpJ4UqMob5SlypK44EeEd ThgaIdG1fjf0N71QyXZe1GEBGlg2ndawgFEwTznMSnkq2blXopaIdBqdmaIIeHqsSg TD4ShJAlWSgYnkdFmhwVK4BjhIiyz0j3obqZ2MYA= Date: Mon, 01 Sep 2025 11:43:08 -0700 To: mm-commits@vger.kernel.org,martin.petersen@oracle.com,lorenzo.stoakes@oracle.com,James.Bottomley@HansenPartnership.com,bvanassche@acm.org,david@redhat.com,akpm@linux-foundation.org From: Andrew Morton Subject: + scsi-scsi_lib-drop-nth_page-usage-within-sg-entry.patch added to mm-new branch Message-Id: <20250901184309.24959C4CEF0@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: scsi: scsi_lib: drop nth_page() usage within SG entry has been added to the -mm mm-new branch. Its filename is scsi-scsi_lib-drop-nth_page-usage-within-sg-entry.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/scsi-scsi_lib-drop-nth_page-usage-within-sg-entry.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. 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 the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: David Hildenbrand Subject: scsi: scsi_lib: drop nth_page() usage within SG entry Date: Mon, 1 Sep 2025 17:03:51 +0200 It's no longer required to use nth_page() when iterating pages within a single SG entry, so let's drop the nth_page() usage. Link: https://lkml.kernel.org/r/20250901150359.867252-31-david@redhat.com Signed-off-by: David Hildenbrand Reviewed-by: Bart Van Assche Reviewed-by: Lorenzo Stoakes Reviewed-by: Martin K. Petersen Cc: "James E.J. Bottomley" Signed-off-by: Andrew Morton --- drivers/scsi/scsi_lib.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/drivers/scsi/scsi_lib.c~scsi-scsi_lib-drop-nth_page-usage-within-sg-entry +++ a/drivers/scsi/scsi_lib.c @@ -3148,8 +3148,7 @@ void *scsi_kmap_atomic_sg(struct scatter /* Offset starting from the beginning of first page in this sg-entry */ *offset = *offset - len_complete + sg->offset; - /* Assumption: contiguous pages can be accessed as "page + i" */ - page = nth_page(sg_page(sg), (*offset >> PAGE_SHIFT)); + page = sg_page(sg) + (*offset >> PAGE_SHIFT); *offset &= ~PAGE_MASK; /* Bytes in this sg-entry from *offset to the end of the page */ _ Patches currently in -mm which might be from david@redhat.com are mm-migrate-remove-migratepage_unmap.patch mm-migrate-remove-migratepage_unmap-fix.patch treewide-remove-migratepage_success.patch mm-huge_memory-move-more-common-code-into-insert_pmd.patch mm-huge_memory-move-more-common-code-into-insert_pud.patch mm-huge_memory-support-huge-zero-folio-in-vmf_insert_folio_pmd.patch fs-dax-use-vmf_insert_folio_pmd-to-insert-the-huge-zero-folio.patch mm-huge_memory-mark-pmd-mappings-of-the-huge-zero-folio-special.patch powerpc-ptdump-rename-struct-pgtable_level-to-struct-ptdump_pglevel.patch mm-rmap-convert-enum-rmap_level-to-enum-pgtable_level.patch mm-memory-convert-print_bad_pte-to-print_bad_page_map.patch mm-memory-convert-print_bad_pte-to-print_bad_page_map-fix.patch mm-memory-factor-out-common-code-from-vm_normal_page_.patch mm-introduce-and-use-vm_normal_page_pud.patch mm-rename-vm_ops-find_special_page-to-vm_ops-find_normal_page.patch prctl-extend-pr_set_thp_disable-to-optionally-exclude-vm_hugepage.patch mm-huge_memory-convert-tva_flags-to-enum-tva_type.patch mm-huge_memory-respect-madv_collapse-with-pr_thp_disable_except_advised.patch mm-stop-making-sparsemem_vmemmap-user-selectable.patch arm64-kconfig-drop-superfluous-select-sparsemem_vmemmap.patch s390-kconfig-drop-superfluous-select-sparsemem_vmemmap.patch x86-kconfig-drop-superfluous-select-sparsemem_vmemmap.patch wireguard-selftests-remove-config_sparsemem_vmemmap=y-from-qemu-kernel-config.patch mm-page_alloc-reject-unreasonable-folio-compound-page-sizes-in-alloc_contig_range_noprof.patch mm-memremap-reject-unreasonable-folio-compound-page-sizes-in-memremap_pages.patch mm-hugetlb-check-for-unreasonable-folio-sizes-when-registering-hstate.patch mm-mm_init-make-memmap_init_compound-look-more-like-prep_compound_page.patch mm-sanity-check-maximum-folio-size-in-folio_set_order.patch mm-limit-folio-compound-page-sizes-in-problematic-kernel-configs.patch mm-simplify-folio_page-and-folio_page_idx.patch mm-hugetlb-cleanup-hugetlb_folio_init_tail_vmemmap.patch mm-mm-percpu-km-drop-nth_page-usage-within-single-allocation.patch fs-hugetlbfs-remove-nth_page-usage-within-folio-in-adjust_range_hwpoison.patch fs-hugetlbfs-cleanup-folio-in-adjust_range_hwpoison.patch mm-pagewalk-drop-nth_page-usage-within-folio-in-folio_walk_start.patch mm-gup-drop-nth_page-usage-within-folio-when-recording-subpages.patch mm-gup-remove-record_subpages.patch io_uring-zcrx-remove-nth_page-usage-within-folio.patch mips-mm-convert-__flush_dcache_pages-to-__flush_dcache_folio_pages.patch mm-cma-refuse-handing-out-non-contiguous-page-ranges.patch dma-remap-drop-nth_page-in-dma_common_contiguous_remap.patch scatterlist-disallow-non-contigous-page-ranges-in-a-single-sg-entry.patch ata-libata-sff-drop-nth_page-usage-within-sg-entry.patch drm-i915-gem-drop-nth_page-usage-within-sg-entry.patch mspro_block-drop-nth_page-usage-within-sg-entry.patch memstick-drop-nth_page-usage-within-sg-entry.patch mmc-drop-nth_page-usage-within-sg-entry.patch scsi-scsi_lib-drop-nth_page-usage-within-sg-entry.patch scsi-sg-drop-nth_page-usage-within-sg-entry.patch vfio-pci-drop-nth_page-usage-within-sg-entry.patch crypto-remove-nth_page-usage-within-sg-entry.patch mm-gup-drop-nth_page-usage-in-unpin_user_page_range_dirty_lock.patch kfence-drop-nth_page-usage.patch block-update-comment-of-struct-bio_vec-regarding-nth_page.patch mm-remove-nth_page.patch