diff options
| author |   Hugh Dickins <hughd@google.com> | 2020-09-18 21:20:06 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2020-09-19 13:13:38 -0700 |
| commit | a333e3e73b6648d3bd3ef6b971a59a6363bfcfc5 (patch) | |
| tree | a76b656358ecd3d58638b3b3a278361e9715afd4 /mm | |
| parent | ksm: reinstate memcg charge on copied pages (diff) | |
| download | linux-dev-a333e3e73b6648d3bd3ef6b971a59a6363bfcfc5.tar.xz linux-dev-a333e3e73b6648d3bd3ef6b971a59a6363bfcfc5.zip | |
mm: migration of hugetlbfs page skip memcg
hugetlbfs pages do not participate in memcg: so although they do find most
of migrate_page_states() useful, it would be better if they did not call
into mem_cgroup_migrate() - where Qian Cai reported that LTP's
move_pages12 triggers the warning in Alex Shi's prospective commit
"mm/memcg: warning on !memcg after readahead page charged".
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Johannes Weiner <hannes@cmpxch.org>
Cc: Alex Shi <alex.shi@linux.alibaba.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Qian Cai <cai@lca.pw>
Link: http://lkml.kernel.org/r/alpine.LSU.2.11.2008301359460.5954@eggly.anvils
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/migrate.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/migrate.c b/mm/migrate.c index 941b89383cf3..aecb1433cf3c 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -668,7 +668,8 @@ void migrate_page_states(struct page *newpage, struct page *page) copy_page_owner(page, newpage); - mem_cgroup_migrate(page, newpage); + if (!PageHuge(page)) + mem_cgroup_migrate(page, newpage); } EXPORT_SYMBOL(migrate_page_states); |