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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>blk_queue_invalidate_tags</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="The Linux Kernel API" /><link rel="up" href="ch14.html" title="Chapter 14. Block Devices" /><link rel="prev" href="re576.html" title="blk_queue_start_tag" /><link rel="next" href="re578.html" title="__blk_free_tags" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>blk_queue_invalidate_tags</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re576.html">Prev</a> </td><th width="60%" align="center">Chapter 14. Block Devices</th><td width="20%" align="right"> <a accesskey="n" href="re578.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="blk_queue_invalidate_tags"><a id="API-blk-queue-invalidate-tags"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>blk_queue_invalidate_tags —
invalidate all pending tags
</p></div><div class="refsynopsisdiv" title="Synopsis"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" class="funcprototype-table"><tr><td><code class="funcdef">void <b class="fsfunc">blk_queue_invalidate_tags </b>(</code></td><td>struct request_queue * <var class="pdparam">q</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2707797"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>q</code></em></span></dt><dd><p>
the request queue for the device
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2707823"></a><h2>Description</h2><p>
Hardware conditions may dictate a need to stop all pending requests.
In this case, we will safely clear the block side of the tag queue and
readd all requests to the request queue in the right order.
</p></div><div class="refsect1" title="Notes"><a id="id2707837"></a><h2>Notes</h2><p>
queue lock must be held.
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