<?xml version="1.0" encoding="ANSI_X3.4-1968" standalone="no"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>filemap_fault</title><meta name="generator" content="DocBook XSL Stylesheets V1.76.1" /><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-generic-file-aio-read.html" title="generic_file_aio_read" /><link rel="next" href="API-read-cache-page-async.html" title="read_cache_page_async" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>filemap_fault</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-generic-file-aio-read.html">Prev</a> </td><th width="60%" align="center">More Memory Management Functions</th><td width="20%" align="right"> <a accesskey="n" href="API-read-cache-page-async.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="filemap_fault"><a id="API-filemap-fault"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>filemap_fault — read in file data for page fault handling </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">int <strong>fsfuncfilemap_fault </strong>(</code></td><td>struct vm_area_struct * <var class="pdparam">vma</var>, </td></tr><tr><td> </td><td>struct vm_fault * <var class="pdparam">vmf</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2599942"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>vma</code></em></span></dt><dd><p> vma in which the fault was taken </p></dd><dt><span class="term"><em class="parameter"><code>vmf</code></em></span></dt><dd><p> struct vm_fault containing details of the fault </p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2599986"></a><h2>Description</h2><p> <code class="function">filemap_fault</code> is invoked via the vma operations vector for a mapped memory region to read in file data during a page fault. </p><p> The goto's are kind of ugly, but this streamlines the normal case of having it in the page cache, and handles the special cases reasonably without having a lot of duplicated code. </p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="API-generic-file-aio-read.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch04s03.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="API-read-cache-page-async.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span>generic_file_aio_read</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span>read_cache_page_async</span></td></tr></table></div></body></html>