From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1845EEE49AF for ; Mon, 21 Aug 2023 20:39:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231215AbjHUUjb (ORCPT ); Mon, 21 Aug 2023 16:39:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56326 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231258AbjHUUjT (ORCPT ); Mon, 21 Aug 2023 16:39:19 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6F82B183 for ; Mon, 21 Aug 2023 13:39:14 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 0F5B964A31 for ; Mon, 21 Aug 2023 20:39:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 685DFC433C8; Mon, 21 Aug 2023 20:39:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1692650353; bh=Iz875ohrCv4TlLyHZnkjkRYAzBUH+pB7YaJvpSVPKs4=; h=Date:To:From:Subject:From; b=g8ur2b/+p281XT6JMnzLBn8AyP82ZX338WiEoVYQVebQeSzqUdt+TE1hsDnEalTNY KmcdLNTmzdrbAXfzXNbVfxihSaxRzqC37Ei/Tzs3ITOLDZkIh6iOa81PiVhUNXyAXJ WGExvMb6Kw07PjNOqW/fh7sHNMRGDiBfbjF64tP0= Date: Mon, 21 Aug 2023 13:39:12 -0700 To: mm-commits@vger.kernel.org, kirill@shutemov.name, david@redhat.com, willy@infradead.org, akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] mm-improve-the-comment-in-isolate_migratepages_block.patch removed from -mm tree Message-Id: <20230821203913.685DFC433C8@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The quilt patch titled Subject: mm: improve the comment in isolate_migratepages_block() has been removed from the -mm tree. Its filename was mm-improve-the-comment-in-isolate_migratepages_block.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Matthew Wilcox Subject: mm: improve the comment in isolate_migratepages_block() Date: Thu, 27 Jul 2023 21:39:44 +0100 A recent patch shows that not everybody understands that "stabilise the mapping" really means "prevent the mapping from being freed", so change the wording to hopefully make that more clear. Link: https://lkml.kernel.org/r/ZMLWEB4m3zvX6SBN@casper.infradead.org Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: David Hildenbrand Cc: "Kirill A. Shutemov" Signed-off-by: Andrew Morton --- mm/compaction.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) --- a/mm/compaction.c~mm-improve-the-comment-in-isolate_migratepages_block +++ a/mm/compaction.c @@ -1100,13 +1100,13 @@ isolate_migratepages_block(struct compac bool migrate_dirty; /* - * Only pages without mappings or that have a - * ->migrate_folio callback are possible to migrate - * without blocking. However, we can be racing with - * truncation so it's necessary to lock the page - * to stabilise the mapping as truncation holds - * the page lock until after the page is removed - * from the page cache. + * Only folios without mappings or that have + * a ->migrate_folio callback are possible to + * migrate without blocking. However, we may + * be racing with truncation, which can free + * the mapping. Truncation holds the folio lock + * until after the folio is removed from the page + * cache so holding it ourselves is sufficient. */ if (!folio_trylock(folio)) goto isolate_fail_put; _ Patches currently in -mm which might be from willy@infradead.org are io_uring-stop-calling-free_compound_page.patch mm-call-free_huge_page-directly.patch mm-convert-free_huge_page-to-free_huge_folio.patch mm-convert-free_transhuge_folio-to-folio_undo_large_rmappable.patch mm-convert-prep_transhuge_page-to-folio_prep_large_rmappable.patch mm-remove-free_compound_page-and-the-compound_page_dtors-array.patch mm-remove-hugetlb_page_dtor.patch mm-add-large_rmappable-page-flag.patch mm-rearrange-page-flags.patch mm-free-up-a-word-in-the-first-tail-page.patch mm-remove-folio_test_transhuge.patch mm-add-tail-private-fields-to-struct-folio.patch mm-convert-split_huge_pages_pid-to-use-a-folio.patch mm-memoryc-fix-mismerge.patch mm-drop-per-vma-lock-when-returning-vm_fault_retry-or-vm_fault_completed-fix.patch minmax-add-in_range-macro.patch mm-convert-page_table_check_pte_set-to-page_table_check_ptes_set.patch mm-add-generic-flush_icache_pages-and-documentation.patch mm-add-folio_flush_mapping.patch mm-remove-arch_implements_flush_dcache_folio.patch mm-add-default-definition-of-set_ptes.patch alpha-implement-the-new-page-table-range-api.patch arc-implement-the-new-page-table-range-api.patch arm-implement-the-new-page-table-range-api.patch arm64-implement-the-new-page-table-range-api.patch csky-implement-the-new-page-table-range-api.patch hexagon-implement-the-new-page-table-range-api.patch ia64-implement-the-new-page-table-range-api.patch ia64-implement-the-new-page-table-range-api-fix.patch loongarch-implement-the-new-page-table-range-api.patch m68k-implement-the-new-page-table-range-api.patch microblaze-implement-the-new-page-table-range-api.patch mips-implement-the-new-page-table-range-api.patch nios2-implement-the-new-page-table-range-api.patch openrisc-implement-the-new-page-table-range-api.patch parisc-implement-the-new-page-table-range-api.patch powerpc-implement-the-new-page-table-range-api.patch powerpc-implement-the-new-page-table-range-api-fix.patch riscv-implement-the-new-page-table-range-api.patch s390-implement-the-new-page-table-range-api.patch sh-implement-the-new-page-table-range-api.patch sparc32-implement-the-new-page-table-range-api.patch sparc64-implement-the-new-page-table-range-api.patch um-implement-the-new-page-table-range-api.patch x86-implement-the-new-page-table-range-api.patch xtensa-implement-the-new-page-table-range-api.patch mm-remove-page_mapping_file.patch mm-rationalise-flush_icache_pages-and-flush_icache_page.patch mm-tidy-up-set_ptes-definition.patch mm-use-flush_icache_pages-in-do_set_pmd.patch mm-call-update_mmu_cache_range-in-more-page-fault-handling-paths.patch mm-swap-use-dedicated-entry-for-swap-in-folio.patch mm-remove-checks-for-pte_index.patch mm-move-pmd_order-to-pgtableh.patch mm-allow-huge_fault-to-be-called-without-the-mmap_lock-held.patch mm-remove-enum-page_entry_size.patch mm-fix-kernel-doc-warning-from-tlb_flush_rmaps.patch mm-fix-get_mctgt_type-kernel-doc.patch mm-fix-clean_record_shared_mapping_range-kernel-doc.patch mm-add-orphaned-kernel-doc-to-the-rst-files.patch