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 D77DBC433FE for ; Mon, 28 Feb 2022 20:31:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229536AbiB1Uc2 (ORCPT ); Mon, 28 Feb 2022 15:32:28 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58298 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229559AbiB1Uc0 (ORCPT ); Mon, 28 Feb 2022 15:32:26 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2A36B9FDA for ; Mon, 28 Feb 2022 12:31:47 -0800 (PST) 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 B627660DCC for ; Mon, 28 Feb 2022 20:31:46 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 18A57C340F1; Mon, 28 Feb 2022 20:31:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1646080306; bh=ae6wZGwNi6vj5PXWCrT7WNXuBadmM54TBpRglHoExIg=; h=Date:To:From:Subject:From; b=QN7fb51dVRshzMu8rFtcYiPAzvX01HpMNS0v0yuRWbYFML9mr0Rga6XM2oA9m3ZKw pCkTlgmfjARhDOZ3+X6xPy8lrAHbXbmCQ7MVW0InxZePcEkoiVQGO3KnHHeDrqVt3L jVs/4easOWPdcRDgr+wiQGFdgZVhpN+m4i9mF4I4= Date: Mon, 28 Feb 2022 12:31:45 -0800 To: mm-commits@vger.kernel.org, zwisler@kernel.org, xiyuyang19@fudan.edu.cn, willy@infradead.org, viro@zeniv.linux.org.uk, shy828301@gmail.com, rcampbell@nvidia.com, kirill.shutemov@linux.intel.com, jack@suse.cz, hughd@google.com, hch@infradead.org, duanxiongchun@bytedance.com, dan.j.williams@intel.com, apopple@nvidia.com, songmuchun@bytedance.com, akpm@linux-foundation.org From: Andrew Morton Subject: + dax-fix-cache-flush-on-pmd-mapped-pages.patch added to -mm tree Message-Id: <20220228203146.18A57C340F1@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: dax: fix cache flush on PMD-mapped pages has been added to the -mm tree. Its filename is dax-fix-cache-flush-on-pmd-mapped-pages.patch This patch should soon appear at https://ozlabs.org/~akpm/mmots/broken-out/dax-fix-cache-flush-on-pmd-mapped-pages.patch and later at https://ozlabs.org/~akpm/mmotm/broken-out/dax-fix-cache-flush-on-pmd-mapped-pages.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: Muchun Song Subject: dax: fix cache flush on PMD-mapped pages The flush_cache_page() only remove a PAGE_SIZE sized range from the cache. However, it does not cover the full pages in a THP except a head page. Replace it with flush_cache_range() to fix this issue. Link: https://lkml.kernel.org/r/20220228063536.24911-3-songmuchun@bytedance.com Fixes: f729c8c9b24f ("dax: wrprotect pmd_t in dax_mapping_entry_mkclean") Signed-off-by: Muchun Song Cc: Alistair Popple Cc: Al Viro Cc: Christoph Hellwig Cc: Dan Williams Cc: Hugh Dickins Cc: Jan Kara Cc: "Kirill A. Shutemov" Cc: Matthew Wilcox (Oracle) Cc: Ralph Campbell Cc: Ross Zwisler Cc: Xiongchun Duan Cc: Xiyu Yang Cc: Yang Shi Signed-off-by: Andrew Morton --- fs/dax.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/fs/dax.c~dax-fix-cache-flush-on-pmd-mapped-pages +++ a/fs/dax.c @@ -845,7 +845,8 @@ static void dax_entry_mkclean(struct add if (!pmd_dirty(*pmdp) && !pmd_write(*pmdp)) goto unlock_pmd; - flush_cache_page(vma, address, pfn); + flush_cache_range(vma, address, + address + HPAGE_PMD_SIZE); pmd = pmdp_invalidate(vma, address, pmdp); pmd = pmd_wrprotect(pmd); pmd = pmd_mkclean(pmd); _ Patches currently in -mm which might be from songmuchun@bytedance.com are mm-list_lru-transpose-the-array-of-per-node-per-memcg-lru-lists.patch mm-introduce-kmem_cache_alloc_lru.patch fs-introduce-alloc_inode_sb-to-allocate-filesystems-specific-inode.patch fs-allocate-inode-by-using-alloc_inode_sb.patch f2fs-allocate-inode-by-using-alloc_inode_sb.patch mm-dcache-use-kmem_cache_alloc_lru-to-allocate-dentry.patch xarray-use-kmem_cache_alloc_lru-to-allocate-xa_node.patch mm-memcontrol-move-memcg_online_kmem-to-mem_cgroup_css_online.patch mm-list_lru-allocate-list_lru_one-only-when-needed.patch mm-list_lru-rename-memcg_drain_all_list_lrus-to-memcg_reparent_list_lrus.patch mm-list_lru-replace-linear-array-with-xarray.patch mm-memcontrol-reuse-memory-cgroup-id-for-kmem-id.patch mm-memcontrol-fix-cannot-alloc-the-maximum-memcg-id.patch mm-list_lru-rename-list_lru_per_memcg-to-list_lru_memcg.patch mm-memcontrol-rename-memcg_cache_id-to-memcg_kmem_id.patch mm-thp-fix-wrong-cache-flush-in-remove_migration_pmd.patch mm-fix-missing-cache-flush-for-all-tail-pages-of-compound-page.patch mm-hugetlb-fix-missing-cache-flush-in-copy_huge_page_from_user.patch mm-hugetlb-fix-missing-cache-flush-in-hugetlb_mcopy_atomic_pte.patch mm-shmem-fix-missing-cache-flush-in-shmem_mfill_atomic_pte.patch mm-userfaultfd-fix-missing-cache-flush-in-mcopy_atomic_pte-and-__mcopy_atomic.patch mm-replace-multiple-dcache-flush-with-flush_dcache_folio.patch mm-hugetlb-free-the-2nd-vmemmap-page-associated-with-each-hugetlb-page.patch mm-hugetlb-replace-hugetlb_free_vmemmap_enabled-with-a-static_key.patch mm-sparsemem-use-page-table-lock-to-protect-kernel-pmd-operations.patch selftests-vm-add-a-hugetlb-test-case.patch mm-sparsemem-move-vmemmap-related-to-hugetlb-to-config_hugetlb_page_free_vmemmap.patch mm-rmap-fix-cache-flush-on-thp-pages.patch dax-fix-cache-flush-on-pmd-mapped-pages.patch mm-rmap-introduce-pfn_mkclean_range-to-cleans-ptes.patch mm-pvmw-add-support-for-walking-devmap-pages.patch dax-fix-missing-writeprotect-the-pte-entry.patch mm-remove-range-parameter-from-follow_invalidate_pte.patch