1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>read_cache_pages</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="ch04s03.html" title="More Memory Management Functions"><link rel="next" href="API-page-cache-sync-readahead.html" title="page_cache_sync_readahead"></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">read_cache_pages</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ch04s03.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-page-cache-sync-readahead.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-read-cache-pages"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>read_cache_pages &#8212; 
2  populate an address space with some pages &amp; start reads against them
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">int <b class="fsfunc">read_cache_pages </b>(</code></td><td>struct address_space * <var class="pdparam">mapping</var>, </td></tr><tr><td>&#160;</td><td>struct list_head * <var class="pdparam">pages</var>, </td></tr><tr><td>&#160;</td><td>int (*<var class="pdparam">filler</var>)
4     <code>(</code>void *, struct page *<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="idp1123970396"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>mapping</code></em></span></dt><dd><p>
5     the address_space
6    </p></dd><dt><span class="term"><em class="parameter"><code>pages</code></em></span></dt><dd><p>
7     The address of a list_head which contains the target pages.  These
8     pages have their -&gt;index populated and are otherwise uninitialised.
9    </p></dd><dt><span class="term"><em class="parameter"><code>filler</code></em></span></dt><dd><p>
10     callback routine for filling a single page.
11    </p></dd><dt><span class="term"><em class="parameter"><code>data</code></em></span></dt><dd><p>
12     private data for the callback routine.
13    </p></dd></dl></div></div><div class="refsect1"><a name="idp1123975284"></a><h2>Description</h2><p>
14   Hides the details of the LRU cache etc from the filesystems.
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