1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>disk_stack_limits</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="The Linux Kernel API"><link rel="up" href="blkdev.html" title="Chapter&#160;14.&#160;Block Devices"><link rel="prev" href="API-bdev-stack-limits.html" title="bdev_stack_limits"><link rel="next" href="API-blk-queue-dma-pad.html" title="blk_queue_dma_pad"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">disk_stack_limits</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-bdev-stack-limits.html">Prev</a>&#160;</td><th width="60%" align="center">Chapter&#160;14.&#160;Block Devices</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-blk-queue-dma-pad.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-disk-stack-limits"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>disk_stack_limits &#8212; 
2     adjust queue limits for stacked drivers
3 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void <b class="fsfunc">disk_stack_limits </b>(</code></td><td>struct gendisk * <var class="pdparam">disk</var>, </td></tr><tr><td>&#160;</td><td>struct block_device * <var class="pdparam">bdev</var>, </td></tr><tr><td>&#160;</td><td>sector_t <var class="pdparam">offset</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1128553004"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>disk</code></em></span></dt><dd><p>
4     MD/DM gendisk (top)
5    </p></dd><dt><span class="term"><em class="parameter"><code>bdev</code></em></span></dt><dd><p>
6     the underlying block device (bottom)
7    </p></dd><dt><span class="term"><em class="parameter"><code>offset</code></em></span></dt><dd><p>
8     offset to beginning of data within component device
9    </p></dd></dl></div></div><div class="refsect1"><a name="idp1128556676"></a><h2>Description</h2><p>
10   Merges the limits for a top level gendisk and a bottom level
11   block_device.
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