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.

[[email protected]: use folio_test_pmd_mappable instead of folio_test_transhuge]
  Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Jan Glauber <[email protected]>
Reviewed-by: Baolin Wang <[email protected]>
Cc: "Huang, Ying" <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions