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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>iget_locked</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="Linux Filesystems API" /><link rel="up" href="ch01s03.html" title="Inode Handling" /><link rel="prev" href="re38.html" title="iget5_locked" /><link rel="next" href="re40.html" title="__insert_inode_hash" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>iget_locked</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re38.html">Prev</a> </td><th width="60%" align="center">Inode Handling</th><td width="20%" align="right"> <a accesskey="n" href="re40.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="iget_locked"><a id="API-iget-locked"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>iget_locked —
obtain an inode from a mounted file system
</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">struct inode * <b class="fsfunc">iget_locked </b>(</code></td><td>struct super_block * <var class="pdparam">sb</var>, </td></tr><tr><td> </td><td>unsigned long <var class="pdparam">ino</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id3007786"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>sb</code></em></span></dt><dd><p>
super block of file system
</p></dd><dt><span class="term"><em class="parameter"><code>ino</code></em></span></dt><dd><p>
inode number to get
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id3007829"></a><h2>Description</h2><p>
<code class="function">iget_locked</code> uses <code class="function">ifind_fast</code> to search for the inode specified by <em class="parameter"><code>ino</code></em> in
the inode cache and if present it is returned with an increased reference
count. This is for file systems where the inode number is sufficient for
unique identification of an inode.
</p><p>
If the inode is not in cache, <code class="function">get_new_inode_fast</code> is called to allocate a
new inode and this is returned locked, hashed, and with the I_NEW flag set.
The file system gets to fill it in before unlocking it via
<code class="function">unlock_new_inode</code>.
</p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="re38.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch01s03.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="re40.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span>iget5_locked</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span>__insert_inode_hash</span></td></tr></table></div></body></html>
