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

From: Miaohe Lin
Date: Fri Mar 04 2022 - 04:35:09 EST


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(-)

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2.23.0