DMA_BUF_KMAP_ATOMIC(9)            Device drivers infrastructure            DMA_BUF_KMAP_ATOMIC(9)



NAME
       dma_buf_kmap_atomic - Map a page of the buffer object into kernel address space. The same
       restrictions as for kmap_atomic and friends apply.

SYNOPSIS
       void * dma_buf_kmap_atomic(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 4.8.                 January 2017                    DMA_BUF_KMAP_ATOMIC(9)