dma_buf_kmap_atomic man page on Oracle

dma_buf_kmap_atomic man page on Oracle

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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 3.8.	   June 2014		DMA_BUF_KMAP_ATOMIC(9)

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