PGPGIN
mem_data->pgpgin = ev[PGPGIN] >> 1;
count_vm_events(PGPGIN, bio_sectors(bio));
PGPGIN,
count_memcg_events(memcg, PGPGIN, 1);
if (memcg_vm_event_stat[i] == PGPGIN ||
PGPGIN,
[I(PGPGIN)] = "pgpgin",
v[PGPGIN] /= 2; /* sectors -> kbytes */