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| 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/migrate.c | |
| parent | 62fdb1632bcbed30c40f6bd2b58297617e442658 (diff) | |
| download | linux-a333e3e73b6648d3bd3ef6b971a59a6363bfcfc5.tar.gz | |
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/migrate.c')
| -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); |