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| author |   Jan Glauber <jglauber@digitalocean.com> | 2023-06-19 12:33:51 +0200 |
|---|---|---|
| committer |   Andrew Morton <akpm@linux-foundation.org> | 2023-06-23 16:59:26 -0700 |
| commit | 0b52c420350e8f9873ba62768cd8246827184408 (patch) | |
| tree | e18b21e54419318901415a262a02e7fef05b3999 /mm/migrate.c | |
| parent | selftests: cgroup: fix unexpected failure on test_memcg_sock (diff) | |
| download | wireguard-linux-0b52c420350e8f9873ba62768cd8246827184408.tar.xz wireguard-linux-0b52c420350e8f9873ba62768cd8246827184408.zip | |
mm: fix shmem THP counters on migration
The per node numa_stat values for shmem don't change on page migration for
THP:
grep shmem /sys/fs/cgroup/machine.slice/.../memory.numa_stat:
shmem N0=1092616192 N1=10485760
shmem_thp N0=1092616192 N1=10485760
migratepages 9181 0 1:
shmem N0=0 N1=1103101952
shmem_thp N0=1092616192 N1=10485760
Fix that by updating shmem_thp counters likewise to shmem counters on page
migration.
[jglauber@digitalocean.com: use folio_test_pmd_mappable instead of folio_test_transhuge]
Link: https://lkml.kernel.org/r/20230622094720.510540-1-jglauber@digitalocean.com
Link: https://lkml.kernel.org/r/20230619103351.234837-1-jglauber@digitalocean.com
Signed-off-by: Jan Glauber <jglauber@digitalocean.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/migrate.c')
| -rw-r--r-- | mm/migrate.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/mm/migrate.c b/mm/migrate.c index ce35afdbc1e3..eca3bf0e93b8 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -486,6 +486,11 @@ int folio_migrate_mapping(struct address_space *mapping, if (folio_test_swapbacked(folio) && !folio_test_swapcache(folio)) { __mod_lruvec_state(old_lruvec, NR_SHMEM, -nr); __mod_lruvec_state(new_lruvec, NR_SHMEM, nr); + + if (folio_test_pmd_mappable(folio)) { + __mod_lruvec_state(old_lruvec, NR_SHMEM_THPS, -nr); + __mod_lruvec_state(new_lruvec, NR_SHMEM_THPS, nr); + } } #ifdef CONFIG_SWAP if (folio_test_swapcache(folio)) { |