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-<table class="head">
- <tr>
- <td class="head-ltitle">VM_MAP_LOOKUP(9)</td>
- <td class="head-vol">Kernel Developer's Manual</td>
- <td class="head-rtitle">VM_MAP_LOOKUP(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_map_lookup</code>,
- <code class="Nm">vm_map_lookup_done</code> &#x2014; <span class="Nd">lookup
- the vm_object backing a given virtual region</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/vm_map.h</a>&gt;</code></p>
-<p class="Pp"><var class="Ft">int</var>
- <br/>
- <code class="Fn">vm_map_lookup</code>(<var class="Fa">vm_map_t *var_map</var>,
- <var class="Fa">vm_offset_t vaddr</var>, <var class="Fa">vm_prot_t
- fault_type</var>, <var class="Fa">vm_map_entry_t *out_entry</var>,
- <var class="Fa">vm_object_t *object</var>, <var class="Fa">vm_pindex_t
- *pindex</var>, <var class="Fa">vm_prot_t *out_prot</var>,
- <var class="Fa">boolean_t *wired</var>);</p>
-<p class="Pp"><var class="Ft">void</var>
- <br/>
- <code class="Fn">vm_map_lookup_done</code>(<var class="Fa" style="white-space: nowrap;">vm_map_t
- map</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_map_lookup"><code class="Fn" id="vm_map_lookup">vm_map_lookup</code></a>()
- function attempts to find the <var class="Vt">vm_object</var>, page index
- and protection, for the given virtual address <var class="Fa">vaddr</var>,
- in the map <var class="Fa">var_map</var>, assuming a page fault of the type
- <var class="Fa">fault_type</var> had occurred.</p>
-<p class="Pp" id="vm_map_lookup_done">Return values are guaranteed until
- <a class="permalink" href="#vm_map_lookup_done"><code class="Fn">vm_map_lookup_done</code></a>()
- is called to release the lock.</p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="IMPLEMENTATION_NOTES"><a class="permalink" href="#IMPLEMENTATION_NOTES">IMPLEMENTATION
- NOTES</a></h1>
-<p class="Pp">The function <code class="Fn">vm_map_lookup</code>() acquires a
- read-lock on the map <var class="Fa">*var_map</var>, but does not release
- it. The caller should invoke <code class="Fn">vm_map_lookup_done</code>() in
- order to release this lock.</p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="RETURN_VALUES"><a class="permalink" href="#RETURN_VALUES">RETURN
- VALUES</a></h1>
-<p class="Pp">The <code class="Fn">vm_map_lookup</code>() function returns
- <code class="Dv">KERN_SUCCESS</code>, and sets the
- <var class="Fa">*object</var>, <var class="Fa">*pindex</var>,
- <var class="Fa">*out_prot</var>, and <var class="Fa">*out_entry</var>
- arguments appropriately for the hypothetical page fault.</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">vm_map(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 19, 2003</td>
- <td class="foot-os">FreeBSD 15.0</td>
- </tr>
-</table>