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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>bitmap_allocate_region</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="ch03.html#id2962812" title="Bitmap Operations" /><link rel="prev" href="re115.html" title="bitmap_release_region" /><link rel="next" href="re117.html" title="bitmap_copy_le" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>bitmap_allocate_region</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re115.html">Prev</a> </td><th width="60%" align="center">Bitmap Operations</th><td width="20%" align="right"> <a accesskey="n" href="re117.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="bitmap_allocate_region"><a id="API-bitmap-allocate-region"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>bitmap_allocate_region —
allocate bitmap region
</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">int <b class="fsfunc">bitmap_allocate_region </b>(</code></td><td>unsigned long * <var class="pdparam">bitmap</var>, </td></tr><tr><td> </td><td>int <var class="pdparam">pos</var>, </td></tr><tr><td> </td><td>int <var class="pdparam">order</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2966211"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>bitmap</code></em></span></dt><dd><p>
array of unsigned longs corresponding to the bitmap
</p></dd><dt><span class="term"><em class="parameter"><code>pos</code></em></span></dt><dd><p>
beginning of bit region to allocate
</p></dd><dt><span class="term"><em class="parameter"><code>order</code></em></span></dt><dd><p>
region size (log base 2 of number of bits) to allocate
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2966273"></a><h2>Description</h2><p>
Allocate (set bits in) a specified region of a bitmap.
</p><p>
Return 0 on success, or <code class="constant">-EBUSY</code> if specified region wasn't
free (not all bits were zero).
</p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="re115.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch03.html#id2962812">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="re117.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span>bitmap_release_region</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span>bitmap_copy_le</span></td></tr></table></div></body></html>
