dma_buf_kunmap
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## Name

dma_buf_kunmap — Unmap a page obtained by dma_buf_kmap.

## Synopsis

`void dma_buf_kunmap (` | struct dma_buf * dmabuf,
| unsigned long page_num,
| void * vaddr`)`;

## Arguments

`dmabuf`

  [in] buffer to unmap page from.

`page_num`

  [in] page in PAGE_SIZE units to unmap.

`vaddr`

  [in] kernel space pointer obtained from dma_buf_kmap.

## Description

This call must always succeed.

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