1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>d_backing_dentry</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="the_directory_cache.html" title="The Directory Cache"><link rel="prev" href="API-d-backing-inode.html" title="d_backing_inode"><link rel="next" href="inode_handling.html" title="Inode Handling"></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">d_backing_dentry</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-d-backing-inode.html">Prev</a>&#160;</td><th width="60%" align="center">The Directory Cache</th><td width="20%" align="right">&#160;<a accesskey="n" href="inode_handling.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-d-backing-dentry"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>d_backing_dentry &#8212; 
2     Get upper or lower dentry we should be using
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 dentry * <b class="fsfunc">d_backing_dentry </b>(</code></td><td>struct dentry * <var class="pdparam">upper</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1101621140"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>upper</code></em></span></dt><dd><p>
4     The upper layer
5    </p></dd></dl></div></div><div class="refsect1"><a name="idp1101622668"></a><h2>Description</h2><p>
6   This is the helper that should be used to get the dentry of the inode that
7   will be used if this dentry were opened as a file.  It may be the upper
8   dentry or it may be a lower dentry pinned by the upper.
9   </p><p>
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11   Normal filesystems should not use this to access their own dentries.
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