1DMA_BUF_KMAP_ATOMIC(9)   Device drivers infrastructure  DMA_BUF_KMAP_ATOMIC(9)
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NAME

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

11       void * dma_buf_kmap_atomic(struct dma_buf * dmabuf,
12                                  unsigned long page_num);
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ARGUMENTS

15       dmabuf
16           [in] buffer to map page from.
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18       page_num
19           [in] page in PAGE_SIZE units to map.
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DESCRIPTION

22       This call must always succeed, any necessary preparations that might
23       fail need to be done in begin_cpu_access.
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26Kernel Hackers Manual 3.10         June 2019            DMA_BUF_KMAP_ATOMIC(9)
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