LPT_HEAP_SZ
const int b = LPT_HEAP_SZ / 2 - 1;
ubifs_assert(c, cpos < LPT_HEAP_SZ);
c->lpt_heap[i].arr = kmalloc_array(LPT_HEAP_SZ,
c->lpt_heap[i].max_cnt = LPT_HEAP_SZ;
c->dirty_idx.arr = kmalloc_array(LPT_HEAP_SZ, sizeof(void *),
c->dirty_idx.max_cnt = LPT_HEAP_SZ;