linux-kernel - [PATCH 00/16] A few cleanup and fixup patches for migration

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Date:   Fri, 4 Mar 2022 17:33:53 +0800
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>
CC:     <mike.kravetz@...cle.com>, <shy828301@...il.com>,
        <willy@...radead.org>, <ying.huang@...el.com>, <ziy@...dia.com>,
        <minchan@...nel.org>, <apopple@...dia.com>,
        <ave.hansen@...ux.intel.com>, <o451686892@...il.com>,
        <almasrymina@...gle.com>, <jhubbard@...dia.com>,
        <rcampbell@...dia.com>, <peterx@...hat.com>,
        <naoya.horiguchi@....com>, <mhocko@...e.com>, <riel@...hat.com>,
        <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <linmiaohe@...wei.com>
Subject: [PATCH 00/16] A few cleanup and fixup patches for migration

Hi everyone,
This series contains a few patches to remove unneeded variables, jump
label and use helper to simplify the code. Also we fix some bugs such
as page refcounts leak , pte_unmap on an not mapped pte and so on. More
details can be found in the respective changelogs. Thanks!

Miaohe Lin (16):
  mm/migration: remove unneeded local variable mapping_locked
  mm/migration: remove unneeded out label
  mm/migration: remove unneeded local variable page_lru
  mm/migration: reduce the rcu lock duration
  mm/migration: fix the confusing PageTransHuge check
  mm/migration: use helper function vma_lookup() in
    add_page_for_migration
  mm/migration: use helper macro min_t in do_pages_stat
  mm/migration: avoid unneeded nodemask_t initialization
  mm/migration: remove some duplicated codes in migrate_pages
  mm/migration: remove PG_writeback handle in folio_migrate_flags
  mm/migration: remove unneeded lock page and PageMovable check
  mm/migration: fix potential page refcounts leak in migrate_pages
  mm/migration: return errno when isolate_huge_page failed
  mm/migration: fix potential invalid node access for reclaim-based
    migration
  mm/migration: fix possible do_pages_stat_array racing with memory
    offline
  mm/migration: fix potential pte_unmap on an not mapped pte

 include/linux/migrate.h |   2 +-
 include/linux/swapops.h |   4 +-
 mm/filemap.c            |  10 +--
 mm/hugetlb.c            |   2 +-
 mm/migrate.c            | 138 ++++++++++++++++------------------------
 5 files changed, 65 insertions(+), 91 deletions(-)

-- 
2.23.0