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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>remove_active_range</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="ch04s03.html" title="More Memory Management Functions" /><link rel="prev" href="re203.html" title="add_active_range" /><link rel="next" href="re205.html" title="remove_all_active_ranges" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>remove_active_range</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re203.html">Prev</a> </td><th width="60%" align="center">More Memory Management Functions</th><td width="20%" align="right"> <a accesskey="n" href="re205.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="remove_active_range"><a id="API-remove-active-range"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>remove_active_range —
Shrink an existing registered range of PFNs
</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">remove_active_range </b>(</code></td><td>unsigned int <var class="pdparam">nid</var>, </td></tr><tr><td> </td><td>unsigned long <var class="pdparam">start_pfn</var>, </td></tr><tr><td> </td><td>unsigned long <var class="pdparam">end_pfn</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2649498"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>nid</code></em></span></dt><dd><p>
The node id the range is on that should be shrunk
</p></dd><dt><span class="term"><em class="parameter"><code>start_pfn</code></em></span></dt><dd><p>
The new PFN of the range
</p></dd><dt><span class="term"><em class="parameter"><code>end_pfn</code></em></span></dt><dd><p>
The new PFN of the range
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2649560"></a><h2>Description</h2><p>
i386 with NUMA use <code class="function">alloc_remap</code> to store a node_mem_map on a local node.
The map is kept near the end physical page range that has already been
registered. This function allows an arch to shrink an existing registered
range.
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