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 B25BCC61D97 for ; Tue, 24 Jan 2023 21:53:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235076AbjAXVxS (ORCPT ); Tue, 24 Jan 2023 16:53:18 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36922 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235075AbjAXVxQ (ORCPT ); Tue, 24 Jan 2023 16:53:16 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 36BC94DCF2 for ; Tue, 24 Jan 2023 13:53:13 -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 ams.source.kernel.org (Postfix) with ESMTPS id D0E15B81717 for ; Tue, 24 Jan 2023 21:53:11 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7A1D1C433D2; Tue, 24 Jan 2023 21:53:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1674597190; bh=NAL2wbE4A49IaNP/olDBjXe2fwUVfRU+9RKJk0YsDZ0=; h=Date:To:From:Subject:From; b=es3yZQnP3QB3HvZ30W94fsSq4tObOoXiDTMv0Tu8FTOoZj9t1p84Uqz3r7eZO7OlB 2NTEGIg4T/O8qcpH6bH8xhN7zwhaSChFgH7F62Q219rQrS0M/xO8H//fPXCCgV6LLE Tla6eQ/xXLJG27KyPeAClEmfN7D8pAd1HOBOikBg= Date: Tue, 24 Jan 2023 13:53:10 -0800 To: mm-commits@vger.kernel.org, willy@infradead.org, vishal.moola@gmail.com, akpm@linux-foundation.org From: Andrew Morton Subject: + mm-mempolicy-convert-queue_pages_hugetlb-to-queue_folios_hugetlb.patch added to mm-unstable branch Message-Id: <20230124215310.7A1D1C433D2@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/mempolicy: convert queue_pages_hugetlb() to queue_folios_hugetlb() has been added to the -mm mm-unstable branch. Its filename is mm-mempolicy-convert-queue_pages_hugetlb-to-queue_folios_hugetlb.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-mempolicy-convert-queue_pages_hugetlb-to-queue_folios_hugetlb.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm 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 via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: "Vishal Moola (Oracle)" Subject: mm/mempolicy: convert queue_pages_hugetlb() to queue_folios_hugetlb() Date: Mon, 23 Jan 2023 17:22:08 -0800 This change is in preparation for the conversion of queue_pages_required() to queue_folio_required() and migrate_page_add() to migrate_folio_add(). Link: https://lkml.kernel.org/r/20230124012210.13963-5-vishal.moola@gmail.com Signed-off-by: Vishal Moola (Oracle) Cc: Matthew Wilcox Signed-off-by: Andrew Morton --- mm/mempolicy.c | 29 ++++++++++++++++++----------- 1 file changed, 18 insertions(+), 11 deletions(-) --- a/mm/mempolicy.c~mm-mempolicy-convert-queue_pages_hugetlb-to-queue_folios_hugetlb +++ a/mm/mempolicy.c @@ -558,7 +558,7 @@ static int queue_folios_pte_range(pmd_t return addr != end ? -EIO : 0; } -static int queue_pages_hugetlb(pte_t *pte, unsigned long hmask, +static int queue_folios_hugetlb(pte_t *pte, unsigned long hmask, unsigned long addr, unsigned long end, struct mm_walk *walk) { @@ -566,7 +566,7 @@ static int queue_pages_hugetlb(pte_t *pt #ifdef CONFIG_HUGETLB_PAGE struct queue_pages *qp = walk->private; unsigned long flags = (qp->flags & MPOL_MF_VALID); - struct page *page; + struct folio *folio; spinlock_t *ptl; pte_t entry; @@ -574,13 +574,13 @@ static int queue_pages_hugetlb(pte_t *pt entry = huge_ptep_get(pte); if (!pte_present(entry)) goto unlock; - page = pte_page(entry); - if (!queue_pages_required(page, qp)) + folio = pfn_folio(pte_pfn(entry)); + if (!queue_pages_required(&folio->page, qp)) goto unlock; if (flags == MPOL_MF_STRICT) { /* - * STRICT alone means only detecting misplaced page and no + * STRICT alone means only detecting misplaced folio and no * need to further check other vma. */ ret = -EIO; @@ -591,20 +591,27 @@ static int queue_pages_hugetlb(pte_t *pt /* * Must be STRICT with MOVE*, otherwise .test_walk() have * stopped walking current vma. - * Detecting misplaced page but allow migrating pages which + * Detecting misplaced folio but allow migrating folios which * have been queued. */ ret = 1; goto unlock; } - /* With MPOL_MF_MOVE, we migrate only unshared hugepage. */ + /* + * With MPOL_MF_MOVE, we try to migrate only unshared folios. If it + * is shared it is likely not worth migrating. + * + * To check if the folio is shared, ideally we want to make sure + * every page is mapped to the same process. Doing that is very + * expensive, so check the estimated mapcount of the folio instead. + */ if (flags & (MPOL_MF_MOVE_ALL) || - (flags & MPOL_MF_MOVE && page_mapcount(page) == 1)) { - if (isolate_hugetlb(page_folio(page), qp->pagelist) && + (flags & MPOL_MF_MOVE && folio_estimated_mapcount(folio) == 1)) { + if (isolate_hugetlb(folio, qp->pagelist) && (flags & MPOL_MF_STRICT)) /* - * Failed to isolate page but allow migrating pages + * Failed to isolate folio but allow migrating folios * which have been queued. */ ret = 1; @@ -702,7 +709,7 @@ static int queue_pages_test_walk(unsigne } static const struct mm_walk_ops queue_pages_walk_ops = { - .hugetlb_entry = queue_pages_hugetlb, + .hugetlb_entry = queue_folios_hugetlb, .pmd_entry = queue_folios_pte_range, .test_walk = queue_pages_test_walk, }; _ Patches currently in -mm which might be from vishal.moola@gmail.com are mm-khugepaged-introduce-release_pte_folio-to-replace-release_pte_page.patch mm-khugepaged-convert-release_pte_pages-to-use-folios.patch pagemap-add-filemap_grab_folio.patch filemap-added-filemap_get_folios_tag.patch filemap-convert-__filemap_fdatawait_range-to-use-filemap_get_folios_tag.patch page-writeback-convert-write_cache_pages-to-use-filemap_get_folios_tag.patch afs-convert-afs_writepages_region-to-use-filemap_get_folios_tag.patch btrfs-convert-btree_write_cache_pages-to-use-filemap_get_folio_tag.patch btrfs-convert-extent_write_cache_pages-to-use-filemap_get_folios_tag.patch ceph-convert-ceph_writepages_start-to-use-filemap_get_folios_tag.patch cifs-convert-wdata_alloc_and_fillpages-to-use-filemap_get_folios_tag.patch ext4-convert-mpage_prepare_extent_to_map-to-use-filemap_get_folios_tag.patch f2fs-convert-f2fs_fsync_node_pages-to-use-filemap_get_folios_tag.patch f2fs-convert-f2fs_flush_inline_data-to-use-filemap_get_folios_tag.patch f2fs-convert-f2fs_sync_node_pages-to-use-filemap_get_folios_tag.patch f2fs-convert-f2fs_write_cache_pages-to-use-filemap_get_folios_tag.patch f2fs-convert-last_fsync_dnode-to-use-filemap_get_folios_tag.patch f2fs-convert-f2fs_sync_meta_pages-to-use-filemap_get_folios_tag.patch gfs2-convert-gfs2_write_cache_jdata-to-use-filemap_get_folios_tag.patch nilfs2-convert-nilfs_lookup_dirty_data_buffers-to-use-filemap_get_folios_tag.patch nilfs2-convert-nilfs_lookup_dirty_node_buffers-to-use-filemap_get_folios_tag.patch nilfs2-convert-nilfs_btree_lookup_dirty_buffers-to-use-filemap_get_folios_tag.patch nilfs2-convert-nilfs_copy_dirty_pages-to-use-filemap_get_folios_tag.patch nilfs2-convert-nilfs_clear_dirty_pages-to-use-filemap_get_folios_tag.patch filemap-remove-find_get_pages_range_tag.patch mm-add-folio_estimated_mapcount.patch mm-mempolicy-convert-queue_pages_pmd-to-queue_folios_pmd.patch mm-mempolicy-convert-queue_pages_pte_range-to-queue_folios_pte_range.patch mm-mempolicy-convert-queue_pages_hugetlb-to-queue_folios_hugetlb.patch mm-mempolicy-convert-queue_pages_required-to-queue_folio_required.patch mm-mempolicy-convert-migrate_page_add-to-migrate_folio_add.patch