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+<table class="head">
+  <tr>
+    <td class="head-ltitle">VM_FAULT_PREFAULT(9)</td>
+    <td class="head-vol">Kernel Developer's Manual</td>
+    <td class="head-rtitle">VM_FAULT_PREFAULT(9)</td>
+  </tr>
+</table>
+<div class="manual-text">
+<section class="Sh">
+<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
+<p class="Pp"><code class="Nm">vm_fault_prefault</code> &#x2014;
+    <span class="Nd">cluster page faults into a process's address
+  space</span></p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
+<p class="Pp"><code class="In">#include
+    &lt;<a class="In">sys/param.h</a>&gt;</code>
+  <br/>
+  <code class="In">#include &lt;<a class="In">vm/vm.h</a>&gt;</code>
+  <br/>
+  <code class="In">#include &lt;<a class="In">vm/pmap.h</a>&gt;</code></p>
+<p class="Pp"><var class="Ft">void</var>
+  <br/>
+  <code class="Fn">vm_fault_prefault</code>(<var class="Fa" style="white-space: nowrap;">pmap_t
+    pmap</var>, <var class="Fa" style="white-space: nowrap;">vm_offset_t
+    addra</var>, <var class="Fa" style="white-space: nowrap;">vm_map_entry_t
+    entry</var>);</p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
+<p class="Pp">The
+    <a class="permalink" href="#vm_fault_prefault"><code class="Fn" id="vm_fault_prefault">vm_fault_prefault</code></a>()
+    function provides a means of clustering pagefaults into a process's address
+    space. It operates upon the physical map <var class="Fa">pmap</var>. The
+    <var class="Fa">entry</var> argument specifies the entry to be prefaulted;
+    the <var class="Fa">addra</var> argument specifies the beginning of the
+    mapping in the process's virtual address space.</p>
+<p class="Pp" id="vm_fault">It is typically called by
+    <a class="permalink" href="#vm_fault"><code class="Fn">vm_fault</code></a>()
+    after the first page fault. It benefits the <a class="Xr">execve(2)</a>
+    system call by eliminating repetitive calls to
+    <code class="Fn">vm_fault</code>(), which would otherwise be made to bring
+    the process's executable pages into physical memory.</p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="IMPLEMENTATION_NOTES"><a class="permalink" href="#IMPLEMENTATION_NOTES">IMPLEMENTATION
+  NOTES</a></h1>
+<p class="Pp">This is a machine-independent function which calls the
+    machine-dependent <a class="Xr">pmap_is_prefaultable(9)</a> helper function
+    to determine if a page may be prefaulted into physical memory.</p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
+  ALSO</a></h1>
+<p class="Pp"><a class="Xr">execve(2)</a>,
+    <a class="Xr">pmap_is_prefaultable(9)</a></p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1>
+<p class="Pp">This manual page was written by <span class="An">Bruce M
+    Simpson</span>
+    &lt;<a class="Mt" href="mailto:bms@spc.org">bms@spc.org</a>&gt;.</p>
+</section>
+</div>
+<table class="foot">
+  <tr>
+    <td class="foot-date">July 21, 2003</td>
+    <td class="foot-os">FreeBSD 15.0</td>
+  </tr>
+</table>