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 also 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 4.8.                 January 2017                           DMA_BUF_MMAP(9)