From mboxrd@z Thu Jan 1 00:00:00 1970 From: akpm@linux-foundation.org Subject: + mm-make-kswapd-try-harder-to-keep-active-pages-in-cache-fix-2.patch added to -mm tree Date: Wed, 31 May 2017 13:51:41 -0700 Message-ID: <592f2cdd.ylseBD+jEm/xcZOZ%akpm@linux-foundation.org> Reply-To: linux-kernel@vger.kernel.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Return-path: Received: from mail.linuxfoundation.org ([140.211.169.12]:51702 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750898AbdEaUvm (ORCPT ); Wed, 31 May 2017 16:51:42 -0400 Sender: mm-commits-owner@vger.kernel.org List-Id: mm-commits@vger.kernel.org To: akpm@linux-foundation.org, hannes@cmpxchg.org, jbacik@fb.com, josef@toxicpanda.com, riel@redhat.com, mm-commits@vger.kernel.org The patch titled Subject: mm-make-kswapd-try-harder-to-keep-active-pages-in-cache-fix-2 has been added to the -mm tree. Its filename is mm-make-kswapd-try-harder-to-keep-active-pages-in-cache-fix-2.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/mm-make-kswapd-try-harder-to-keep-active-pages-in-cache-fix-2.patch and later at http://ozlabs.org/~akpm/mmotm/broken-out/mm-make-kswapd-try-harder-to-keep-active-pages-in-cache-fix-2.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/SubmitChecklist when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Andrew Morton Subject: mm-make-kswapd-try-harder-to-keep-active-pages-in-cache-fix-2 avoid div-by-zero Cc: Johannes Weiner Cc: Josef Bacik Cc: Josef Bacik Cc: Rik van Riel Signed-off-by: Andrew Morton --- mm/vmscan.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff -puN mm/vmscan.c~mm-make-kswapd-try-harder-to-keep-active-pages-in-cache-fix-2 mm/vmscan.c --- a/mm/vmscan.c~mm-make-kswapd-try-harder-to-keep-active-pages-in-cache-fix-2 +++ a/mm/vmscan.c @@ -2724,7 +2724,7 @@ static bool shrink_node(pg_data_t *pgdat if (sc->nr_reclaimed - nr_reclaimed) { reclaimable = true; } else if (sc->inactive_only && !skip_slab) { - unsigned long percent; + unsigned long percent = 100; /* * We didn't reclaim anything this go around, so the @@ -2735,7 +2735,8 @@ static bool shrink_node(pg_data_t *pgdat * hoping that eventually we'll start freeing enough * objects to reclaim space. */ - percent = (slab_reclaimed * 100 / slab_scanned); + if (slab_scanned) + percent = (slab_reclaimed * 100 / slab_scanned); if (percent < 50) sc->inactive_only = 0; else _ Patches currently in -mm which might be from akpm@linux-foundation.org are i-need-old-gcc.patch mm-clarify-why-we-want-kmalloc-before-falling-backto-vmallock-checkpatch-fixes.patch mm-migrate-fix-ref-count-handling-when-hugepage_migration_supported-v2-fix.patch mm-hugetlb-report-ehwpoison-not-efault-when-foll_hwpoison-is-specified-checkpatch-fixes.patch arm-arch-arm-include-asm-pageh-needs-personalityh.patch ocfs2-old-mle-put-and-release-after-the-function-dlm_add_migration_mle-called-fix.patch ocfs2-dlm-optimization-of-code-while-free-dead-node-locks-checkpatch-fixes.patch mm.patch mm-slub-wrap-cpu_slab-partial-in-config_slub_cpu_partial-fix.patch mm-make-kswapd-try-harder-to-keep-active-pages-in-cache-fix.patch mm-make-kswapd-try-harder-to-keep-active-pages-in-cache-fix-2.patch swap-add-block-io-poll-in-swapin-path-checkpatch-fixes.patch mm-oom_kill-count-global-and-memory-cgroup-oom-kills-fix.patch mm-oom_kill-count-global-and-memory-cgroup-oom-kills-fix-fix.patch mm-swap-sort-swap-entries-before-free-fix.patch kernel-reboot-add-devm_register_reboot_notifier-fix.patch fault-inject-support-systematic-fault-injection-fix.patch kernel-forkc-export-kernel_thread-to-modules.patch slab-leaks3-default-y.patch