generic_pipe_buf_unmap
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## Name

generic_pipe_buf_unmap — unmap a previously mapped pipe buffer

## Synopsis

`void generic_pipe_buf_unmap (` | struct pipe_inode_info * pipe,
| struct pipe_buffer * buf,
| void * map_data`)`;

## Arguments

`pipe`

  the pipe that the buffer belongs to

`buf`

  the buffer that should be unmapped

`map_data`

  the data that the mapping function returned

## Description

This function undoes the mapping that ->`map` provided.

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