DMA_BUF_KMAP(9) Device drivers infrastructure DMA_BUF_KMAP(9)
NAME dma_buf_kmap - Map a page of the buffer object into kernel address space. The same restrictions as for kmap and friends apply.
SYNOPSIS void * dma_buf_kmap(struct dma_buf * dmabuf, unsigned long page_num);
ARGUMENTS dmabuf [in] buffer to map page from.
page_num [in] page in PAGE_SIZE units to map.
DESCRIPTION This call must always succeed, any necessary preparations that might fail need to be done in begin_cpu_access.
COPYRIGHT Kernel Hackers Manual 2.6. September 2014 DMA_BUF_KMAP(9)