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 93E96C433F5 for ; Thu, 7 Apr 2022 22:34:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232113AbiDGWgf (ORCPT ); Thu, 7 Apr 2022 18:36:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60118 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232099AbiDGWgb (ORCPT ); Thu, 7 Apr 2022 18:36:31 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 02AD7114DDE for ; Thu, 7 Apr 2022 15:34:29 -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 ABBD262029 for ; Thu, 7 Apr 2022 22:34:28 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0C029C385A4; Thu, 7 Apr 2022 22:34:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1649370868; bh=axo/1K3QawSDNHHeylNcH2vBookTUwFvxbSzwSDp650=; h=Date:To:From:Subject:From; b=MUerbP3yERiTMjqQAuRhDQ5uoO6ExVwAiXIIjTF5B5jzX15nFJdbUI1xMSF3rhP5J zGfYyidjp5VXtl0oij/THkN44G9Y4yeogzkvuez9dq7xMMPj4YvZit3tHWEqD/Xrca wNmjPXqJTEwh7b+ypZ7NhvKvyRaSfLUp1/7ueIe0= Date: Thu, 07 Apr 2022 15:34:27 -0700 To: mm-commits@vger.kernel.org, shy828301@gmail.com, naoya.horiguchi@nec.com, mike.kravetz@oracle.com, david@redhat.com, linmiaohe@huawei.com, akpm@linux-foundation.org From: Andrew Morton Subject: + mm-memory-failurec-dissolve-truncated-hugetlb-page.patch added to -mm tree Message-Id: <20220407223428.0C029C385A4@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/memory-failure.c: dissolve truncated hugetlb page has been added to the -mm tree. Its filename is mm-memory-failurec-dissolve-truncated-hugetlb-page.patch This patch should soon appear at https://ozlabs.org/~akpm/mmots/broken-out/mm-memory-failurec-dissolve-truncated-hugetlb-page.patch and later at https://ozlabs.org/~akpm/mmotm/broken-out/mm-memory-failurec-dissolve-truncated-hugetlb-page.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/memory-failure.c: dissolve truncated hugetlb page If me_huge_page meets a truncated huge page, hpage won't be dissolved even if we hold the last refcnt. It's because the truncated huge page has NULL page_mapping while it's not anonymous page too. Thus we lose the last chance to dissolve it into buddy to save healthy subpages. Remove PageAnon check to handle these huge pages too. Link: https://lkml.kernel.org/r/20220407130352.15618-4-linmiaohe@huawei.com Signed-off-by: Miaohe Lin Cc: David Hildenbrand Cc: Mike Kravetz Cc: Naoya Horiguchi Cc: Yang Shi Signed-off-by: Andrew Morton --- mm/memory-failure.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/mm/memory-failure.c~mm-memory-failurec-dissolve-truncated-hugetlb-page +++ a/mm/memory-failure.c @@ -1046,8 +1046,7 @@ static int me_huge_page(struct page_stat * hugepage, so we can free and dissolve it into buddy to * save healthy subpages. */ - if (PageAnon(hpage)) - put_page(hpage); + put_page(hpage); if (__page_handle_poison(p)) { page_ref_inc(p); res = MF_RECOVERED; _ Patches currently in -mm which might be from linmiaohe@huawei.com are mm-mempolicy-fix-mpol_new-leak-in-shared_policy_replace.patch 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-avoid-false-postive-pageswapcache-test.patch mm-memory-failurec-minor-cleanup-for-hwpoisonhandlable.patch mm-memory-failurec-dissolve-truncated-hugetlb-page.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-out-label.patch mm-migration-remove-unneeded-local-variable-page_lru.patch mm-migration-fix-the-confusing-pagetranshuge-check.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