sgl_alloc_order
sglist->scatterlist = sgl_alloc_order(buf_len, order, false, GFP_KERNEL,
*sgl = sgl_alloc_order(length, 0, chainable, gfp, nents);
struct scatterlist *sgl_alloc_order(unsigned long long length,
EXPORT_SYMBOL(sgl_alloc_order);
return sgl_alloc_order(length, 0, false, gfp, nent_p);