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 X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 457CFC11F64 for ; Tue, 29 Jun 2021 00:34:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1FCDE61CE7 for ; Tue, 29 Jun 2021 00:34:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232161AbhF2AhG (ORCPT ); Mon, 28 Jun 2021 20:37:06 -0400 Received: from mail.kernel.org ([198.145.29.99]:33348 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232060AbhF2AhG (ORCPT ); Mon, 28 Jun 2021 20:37:06 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id CBA5C61CDC; Tue, 29 Jun 2021 00:34:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1624926880; bh=Ux97QL0Jffk6fBp6AGRGOnIo8TkVsKexVyKBi8bgSCs=; h=Date:From:To:Subject:From; b=aYFiOxn+W5DjChxUV96J5nRegm67tF5l4hECHOiyGof7s6CwjiKS7DYFwM1zPjzEW GtCXJGWu3jnWBFE+WGDYlOSVMaYS+V4TD65TxCXB1oBmGuGRIZbzpt3JLVOOZyDRg0 FlQeleXAr0DlStMVSfW88rRakOHn68S9I4bWSftk= Date: Mon, 28 Jun 2021 17:34:39 -0700 From: akpm@linux-foundation.org To: dave.hansen@linux.intel.com, hdanton@sina.com, mgorman@techsingularity.net, mhocko@kernel.org, mm-commits@vger.kernel.org, vbabka@suse.cz Subject: [folded-merged] mm-page_alloc-introduce-vmpercpu_pagelist_high_fraction-fix.patch removed from -mm tree Message-ID: <20210629003439.Vw7qNIV-B%akpm@linux-foundation.org> User-Agent: s-nail v14.8.16 Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The patch titled Subject: mm/page_alloc: introduce vm.percpu_pagelist_high_fraction -fix has been removed from the -mm tree. Its filename was mm-page_alloc-introduce-vmpercpu_pagelist_high_fraction-fix.patch This patch was dropped because it was folded into mm-page_alloc-introduce-vmpercpu_pagelist_high_fraction.patch ------------------------------------------------------ From: Mel Gorman Subject: mm/page_alloc: introduce vm.percpu_pagelist_high_fraction -fix Vlastimil Babka pointed out that the documentation for vm.percpu_pagelist_high_fraction is potentially misleading so fix it. This is a fix to the mmotm patch mm-page_alloc-introduce-vmpercpu_pagelist_high_fraction.patch Link: https://lkml.kernel.org/r/20210528151010.GQ30378@techsingularity.net Signed-off-by: Mel Gorman Cc: Dave Hansen Cc: Hillf Danton Cc: Michal Hocko Cc: Vlastimil Babka Signed-off-by: Andrew Morton --- Documentation/admin-guide/sysctl/vm.rst | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) --- a/Documentation/admin-guide/sysctl/vm.rst~mm-page_alloc-introduce-vmpercpu_pagelist_high_fraction-fix +++ a/Documentation/admin-guide/sysctl/vm.rst @@ -793,15 +793,16 @@ why oom happens. You can get snapshot. percpu_pagelist_high_fraction ============================= -This is the fraction of pages in each zone that are allocated for each -per cpu page list. The min value for this is 8. It means that we do -not allow more than 1/8th of pages in each zone to be allocated in any -single per_cpu_pagelist. This entry only changes the value of hot per -cpu pagelists. User can specify a number like 100 to allocate 1/100th -of each zone to each per cpu page list. +This is the fraction of pages in each zone that are can be stored to +per-cpu page lists. It is an upper boundary that is divided depending +on the number of online CPUs. The min value for this is 8 which means +that we do not allow more than 1/8th of pages in each zone to be stored +on per-cpu page lists. This entry only changes the value of hot per-cpu +page lists. A user can specify a number like 100 to allocate 1/100th of +each zone between per-cpu lists. -The batch value of each per cpu pagelist remains the same regardless of the -value of the high fraction so allocation latencies are unaffected. +The batch value of each per-cpu page list remains the same regardless of +the value of the high fraction so allocation latencies are unaffected. The initial value is zero. Kernel uses this value to set the high pcp->high mark based on the low watermark for the zone and the number of local _ Patches currently in -mm which might be from mgorman@techsingularity.net are mm-page_alloc-correct-return-value-of-populated-elements-if-bulk-array-is-populated.patch mm-page_alloc-split-per-cpu-page-lists-and-zone-stats.patch mm-page_alloc-convert-per-cpu-list-protection-to-local_lock.patch mm-vmstat-convert-numa-statistics-to-basic-numa-counters.patch mm-vmstat-inline-numa-event-counter-updates.patch mm-page_alloc-batch-the-accounting-updates-in-the-bulk-allocator.patch mm-page_alloc-reduce-duration-that-irqs-are-disabled-for-vm-counters.patch mm-page_alloc-explicitly-acquire-the-zone-lock-in-__free_pages_ok.patch mm-page_alloc-avoid-conflating-irqs-disabled-with-zone-lock.patch mm-page_alloc-update-pgfree-outside-the-zone-lock-in-__free_pages_ok.patch mm-page_alloc-delete-vmpercpu_pagelist_fraction.patch mm-page_alloc-disassociate-the-pcp-high-from-pcp-batch.patch mm-page_alloc-adjust-pcp-high-after-cpu-hotplug-events.patch mm-page_alloc-scale-the-number-of-pages-that-are-batch-freed.patch mm-page_alloc-limit-the-number-of-pages-on-pcp-lists-when-reclaim-is-active.patch mm-page_alloc-introduce-vmpercpu_pagelist_high_fraction.patch mm-page_alloc-move-free_the_page.patch mm-page_alloc-allow-high-order-pages-to-be-stored-on-the-per-cpu-lists.patch mm-page_alloc-split-pcp-high-across-all-online-cpus-for-cpuless-nodes.patch mm-vmscan-remove-kerneldoc-like-comment-from-isolate_lru_pages.patch mm-vmalloc-include-header-for-prototype-of-set_iounmap_nonlazy.patch mm-page_alloc-make-should_fail_alloc_page-a-static-function-should_fail_alloc_page-static.patch mm-mapping_dirty_helpers-remove-double-note-in-kerneldoc.patch mm-memcontrolc-fix-kerneldoc-comment-for-mem_cgroup_calculate_protection.patch mm-memory_hotplug-fix-kerneldoc-comment-for-__try_online_node.patch mm-memory_hotplug-fix-kerneldoc-comment-for-__remove_memory.patch mm-zbud-add-kerneldoc-fields-for-zbud_pool.patch mm-z3fold-add-kerneldoc-fields-for-z3fold_pool.patch mm-swap-make-swap_address_space-an-inline-function.patch mm-mmap_lock-remove-dead-code-for-config_tracing-configurations.patch mm-page_alloc-move-prototype-for-find_suitable_fallback.patch mm-swap-make-node_data-an-inline-function-on-config_flatmem.patch