dma_buf_mmap man page on Oracle

dma_buf_mmap man page on Oracle

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DMA_BUF_MMAP(9)		 Device drivers infrastructure	       DMA_BUF_MMAP(9)

NAME
       dma_buf_mmap - Setup up a userspace mmap with the given vma

SYNOPSIS
       int dma_buf_mmap(struct dma_buf * dmabuf, struct vm_area_struct * vma,
			unsigned long pgoff);

ARGUMENTS
       dmabuf
	   [in] buffer that should back the vma

       vma
	   [in] vma for the mmap

       pgoff
	   [in] offset in pages where this mmap should start within the
	   dma-buf buffer.

DESCRIPTION
       This function adjusts the passed in vma so that it points at the file
       of the dma_buf operation. It alsog adjusts the starting pgoff and does
       bounds checking on the size of the vma. Then it calls the exporters
       mmap function to set up the mapping.

       Can return negative error values, returns 0 on success.

COPYRIGHT
Kernel Hackers Manual 3.8.	   June 2014		       DMA_BUF_MMAP(9)

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