trace_block_plug
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## Name

trace_block_plug — keep operations requests in request queue

## Synopsis

`void trace_block_plug (` | struct request_queue * q`)`;

## Arguments

`q`

  request queue to plug

## Description

Plug the request queue `q`. Do not allow block operation requests to be sent to the device driver. Instead, accumulate requests in the queue to improve throughput performance of the block device.

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