1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>ilookup5</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="Linux Filesystems API"><link rel="up" href="inode_handling.html" title="Inode Handling"><link rel="prev" href="API-ilookup5-nowait.html" title="ilookup5_nowait"><link rel="next" href="API-ilookup.html" title="ilookup"></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">ilookup5</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-ilookup5-nowait.html">Prev</a>&#160;</td><th width="60%" align="center">Inode Handling</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-ilookup.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-ilookup5"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>ilookup5 &#8212; 
2     search for an inode in the inode cache
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">struct inode * <b class="fsfunc">ilookup5 </b>(</code></td><td>struct super_block * <var class="pdparam">sb</var>, </td></tr><tr><td>&#160;</td><td>unsigned long <var class="pdparam">hashval</var>, </td></tr><tr><td>&#160;</td><td>int (*<var class="pdparam">test</var>)
4     <code>(</code>struct inode *, void *<code>)</code>, </td></tr><tr><td>&#160;</td><td>void * <var class="pdparam">data</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1101764116"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>sb</code></em></span></dt><dd><p>
5     super block of file system to search
6    </p></dd><dt><span class="term"><em class="parameter"><code>hashval</code></em></span></dt><dd><p>
7     hash value (usually inode number) to search for
8    </p></dd><dt><span class="term"><em class="parameter"><code>test</code></em></span></dt><dd><p>
9     callback used for comparisons between inodes
10    </p></dd><dt><span class="term"><em class="parameter"><code>data</code></em></span></dt><dd><p>
11     opaque data pointer to pass to <em class="parameter"><code>test</code></em>
12    </p></dd></dl></div></div><div class="refsect1"><a name="idp1101769044"></a><h2>Description</h2><p>
13   Search for the inode specified by <em class="parameter"><code>hashval</code></em> and <em class="parameter"><code>data</code></em> in the inode cache,
14   and if the inode is in the cache, return the inode with an incremented
15   reference count.  Waits on I_NEW before returning the inode.
16   returned with an incremented reference count.
17   </p><p>
18
19   This is a generalized version of <code class="function">ilookup</code> for file systems where the
20   inode number is not sufficient for unique identification of an inode.
21</p></div><div class="refsect1"><a name="idp1101771108"></a><h2>Note</h2><p>
22   <em class="parameter"><code>test</code></em> is called with the inode_hash_lock held, so can't sleep.
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