1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>vzalloc</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="ch04s03.html" title="More Memory Management Functions"><link rel="prev" href="API-vmalloc.html" title="vmalloc"><link rel="next" href="API-vmalloc-user.html" title="vmalloc_user"></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">vzalloc</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-vmalloc.html">Prev</a>&#160;</td><th width="60%" align="center">More Memory Management Functions</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-vmalloc-user.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-vzalloc"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>vzalloc &#8212; 
2     allocate virtually contiguous memory with zero fill
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">vzalloc </b>(</code></td><td>unsigned long <var class="pdparam">size</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1124433500"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>size</code></em></span></dt><dd><p>
4     allocation size
5     Allocate enough pages to cover <em class="parameter"><code>size</code></em> from the page level
6     allocator and map them into contiguous kernel virtual space.
7     The memory allocated is set to zero.
8    </p></dd></dl></div></div><div class="refsect1"><a name="idp1124435628"></a><h2>Description</h2><p>
9   For tight control over page level allocator and protection flags
10   use <code class="function">__vmalloc</code> instead.
11</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="API-vmalloc.html">Prev</a>&#160;</td><td width="20%" align="center"><a accesskey="u" href="ch04s03.html">Up</a></td><td width="40%" align="right">&#160;<a accesskey="n" href="API-vmalloc-user.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">vmalloc</span>&#160;</td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top">&#160;<span class="phrase">vmalloc_user</span></td></tr></table></div></body></html>
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