PTYPE_HASH_SIZE
#define PTYPE_HASH_MASK (PTYPE_HASH_SIZE - 1)
extern struct list_head ptype_base[PTYPE_HASH_SIZE] __read_mostly;
for (i = 0; i < PTYPE_HASH_SIZE; i++)
struct list_head ptype_base[PTYPE_HASH_SIZE] __read_mostly;
for (t = 0; t < PTYPE_HASH_SIZE; t++) {
if (++hash >= PTYPE_HASH_SIZE)