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 8ECFFC433FE for ; Tue, 19 Apr 2022 03:59:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237705AbiDSEBr (ORCPT ); Tue, 19 Apr 2022 00:01:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58726 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240345AbiDSEBo (ORCPT ); Tue, 19 Apr 2022 00:01:44 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 380FA21E0F for ; Mon, 18 Apr 2022 20:59:03 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id C8A1860F16 for ; Tue, 19 Apr 2022 03:59:02 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2B14DC385A5; Tue, 19 Apr 2022 03:59:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1650340742; bh=5wO3qN6ejO+brxyDDnyKTOVwz08OvkTWEFGAW04u9k0=; h=Date:To:From:Subject:From; b=gKOoH/gUsZAegn3JQX6GDweJB+F3f0naC0k2aUKgxzqtxlL6yDWB5JsOblnGTevb9 fai6bG2Aeizj4nxlu2OVdyNJci975LFpvc6QjYAeKkJR+4pdhNoDCsAqR1itOvK/5H 6gQdZbMNSQDNHVVtU9BQHcR53pK5AsaErh75qJwY= Date: Mon, 18 Apr 2022 20:59:01 -0700 To: mm-commits@vger.kernel.org, vbabka@suse.cz, pintu@codeaurora.org, david@redhat.com, charante@codeaurora.org, linmiaohe@huawei.com, akpm@linux-foundation.org From: Andrew Morton Subject: + mm-compaction-remove-unneeded-assignment-to-isolate_start_pfn.patch added to -mm tree Message-Id: <20220419035902.2B14DC385A5@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The patch titled Subject: mm: compaction: remove unneeded assignment to isolate_start_pfn has been added to the -mm tree. Its filename is mm-compaction-remove-unneeded-assignment-to-isolate_start_pfn.patch This patch should soon appear at https://ozlabs.org/~akpm/mmots/broken-out/mm-compaction-remove-unneeded-assignment-to-isolate_start_pfn.patch and later at https://ozlabs.org/~akpm/mmotm/broken-out/mm-compaction-remove-unneeded-assignment-to-isolate_start_pfn.patch 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 and is updated there every 3-4 working days ------------------------------------------------------ From: Miaohe Lin Subject: mm: compaction: remove unneeded assignment to isolate_start_pfn isolate_start_pfn is unused when cc->nr_freepages ! = 0. Otherwise cc->free_pfn will overwrite it unconditionally. So we should remove this unneeded and somewhat misleading assignment. Link: https://lkml.kernel.org/r/20220418141253.24298-4-linmiaohe@huawei.com Signed-off-by: Miaohe Lin Cc: Charan Teja Kalla Cc: David Hildenbrand Cc: Pintu Kumar Cc: Vlastimil Babka Signed-off-by: Andrew Morton --- mm/compaction.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/compaction.c~mm-compaction-remove-unneeded-assignment-to-isolate_start_pfn +++ a/mm/compaction.c @@ -1586,7 +1586,7 @@ static void isolate_freepages(struct com unsigned int stride; /* Try a small search of the free lists for a candidate */ - isolate_start_pfn = fast_isolate_freepages(cc); + fast_isolate_freepages(cc); if (cc->nr_freepages) goto splitmap; _ Patches currently in -mm which might be from linmiaohe@huawei.com are mm-shmem-make-shmem_init-return-void.patch mm-memcg-remove-unneeded-nr_scanned.patch mm-mmapc-use-helper-mlock_future_check.patch mm-mremap-use-helper-mlock_future_check.patch mm-mremap-avoid-unneeded-do_munmap-call.patch mm-memory-failurec-minor-cleanup-for-hwpoisonhandlable.patch mm-memory-failurec-dissolve-truncated-hugetlb-page.patch mm-vmscan-remove-obsolete-comment-in-get_scan_count.patch mm-vmscan-fix-comment-for-current_may_throttle.patch mm-z3fold-declare-z3fold_mount-with-__init.patch mm-z3fold-remove-obsolete-comment-in-z3fold_alloc.patch mm-z3fold-minor-clean-up-for-z3fold_free.patch mm-z3fold-remove-unneeded-page_mapcount_reset-and-clearpageprivate.patch mm-z3fold-remove-confusing-local-variable-l-reassignment.patch mm-z3fold-move-decrement-of-pool-pages_nr-into-__release_z3fold_page.patch mm-z3fold-remove-redundant-list_del_init-of-zhdr-buddy-in-z3fold_free.patch mm-z3fold-remove-unneeded-page_headless-check-in-free_handle.patch mm-compaction-use-helper-isolation_suitable.patch drivers-base-nodec-fix-compaction-sysfs-file-leak.patch mm-migration-remove-unneeded-local-variable-mapping_locked.patch mm-migration-remove-unneeded-local-variable-page_lru.patch mm-migration-use-helper-function-vma_lookup-in-add_page_for_migration.patch mm-migration-use-helper-macro-min-in-do_pages_stat.patch mm-migration-avoid-unneeded-nodemask_t-initialization.patch mm-migration-remove-some-duplicated-codes-in-migrate_pages.patch mm-migration-fix-potential-page-refcounts-leak-in-migrate_pages.patch mm-migration-fix-potential-invalid-node-access-for-reclaim-based-migration.patch mm-migration-fix-possible-do_pages_stat_array-racing-with-memory-offline.patch mm-compaction-remove-unneeded-return-value-of-kcompactd_run.patch mm-compaction-remove-unneeded-pfn-update.patch mm-compaction-remove-unneeded-assignment-to-isolate_start_pfn.patch mm-compaction-clean-up-comment-for-sched-contention.patch mm-compaction-clean-up-comment-about-suitable-migration-target-recheck.patch mm-compaction-use-compact_cluster_max-in-compactionc.patch mm-compaction-use-helper-compound_nr-in-isolate_migratepages_block.patch mm-compaction-clean-up-comment-about-async-compaction-in-isolate_migratepages.patch mm-compaction-avoid-possible-null-pointer-dereference-in-kcompactd_cpu_online.patch mm-compaction-make-compaction_zonelist_suitable-return-false-when-compact_success.patch mm-compaction-simplify-the-code-in-__compact_finished.patch mm-compaction-make-sure-highest-is-above-the-min_pfn.patch