snd_pcm_lib_get_vmalloc_page
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## Name

snd_pcm_lib_get_vmalloc_page — map vmalloc buffer offset to page struct

## Synopsis

`struct page * snd_pcm_lib_get_vmalloc_page (` | struct snd_pcm_substream * substream,
| unsigned long offset`)`;

## Arguments

`substream`

  the substream with a buffer allocated by `snd_pcm_lib_alloc_vmalloc_buffer`

`offset`

  offset in the buffer

## Description

This function is to be used as the page callback in the PCM ops.

## Return

The page struct, or `NULL` on failure.

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