函数逻辑报告

函数名称：dma_alloc_from_contiguous() - allocate pages from contiguous area*@dev: Pointer to device for which the allocation is performed.*@count: Requested number of pages.*@align: Requested alignment of pages (in PAGE_SIZE order).

函数原型：struct page *dma_alloc_from_contiguous(struct device *dev, size_t count, unsigned int align, bool no_warn)

返回类型：struct page

参数：