DMA_BUCKET_OFFSET
static char dmanames[DMA_PAGE_SHIFT - DMA_BUCKET_OFFSET + 1][10];
struct pool dmapools[DMA_PAGE_SHIFT - DMA_BUCKET_OFFSET + 1];
1 << (i + DMA_BUCKET_OFFSET));
pool_init(&dmapools[i], 1 << (i + DMA_BUCKET_OFFSET), 0,
if (sz <= (1 << (b + DMA_BUCKET_OFFSET)))