1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>invalidate_mapping_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="API-truncate-inode-pages-final.html" title="truncate_inode_pages_final"><link rel="next" href="API-invalidate-inode-pages2-range.html" title="invalidate_inode_pages2_range"></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">invalidate_mapping_pages</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-truncate-inode-pages-final.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-invalidate-inode-pages2-range.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-invalidate-mapping-pages"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>invalidate_mapping_pages &#8212; 
2     Invalidate all the unlocked pages of one inode
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">unsigned long <b class="fsfunc">invalidate_mapping_pages </b>(</code></td><td>struct address_space * <var class="pdparam">mapping</var>, </td></tr><tr><td>&#160;</td><td>pgoff_t <var class="pdparam">start</var>, </td></tr><tr><td>&#160;</td><td>pgoff_t <var class="pdparam">end</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1124869740"></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>
4     the address_space which holds the pages to invalidate
5    </p></dd><dt><span class="term"><em class="parameter"><code>start</code></em></span></dt><dd><p>
6     the offset 'from' which to invalidate
7    </p></dd><dt><span class="term"><em class="parameter"><code>end</code></em></span></dt><dd><p>
8     the offset 'to' which to invalidate (inclusive)
9    </p></dd></dl></div></div><div class="refsect1"><a name="idp1124873460"></a><h2>Description</h2><p>
10   This function only removes the unlocked pages, if you want to
11   remove all the pages of one inode, you must call truncate_inode_pages.
12   </p><p>
13
14   <code class="function">invalidate_mapping_pages</code> will not block on IO activity. It will not
15   invalidate pages which are dirty, locked, under writeback or mapped into
16   pagetables.
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