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-<table class="head">
- <tr>
- <td class="head-ltitle">VM_MAP_FINDSPACE(9)</td>
- <td class="head-vol">Kernel Developer's Manual</td>
- <td class="head-rtitle">VM_MAP_FINDSPACE(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_findspace</code> &#x2014;
- <span class="Nd">find a free region within a map</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_findspace</code>(<var class="Fa">vm_map_t map</var>,
- <var class="Fa">vm_offset_t start</var>, <var class="Fa">vm_size_t
- length</var>, <var class="Fa">vm_offset_t *addr</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_findspace"><code class="Fn" id="vm_map_findspace">vm_map_findspace</code></a>()
- function attempts to find a region with sufficient space in the
- <var class="Fa">map</var> for an object of size <var class="Fa">length</var>
- at the address <var class="Fa">addr</var>.</p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="IMPLEMENTATION_NOTES"><a class="permalink" href="#IMPLEMENTATION_NOTES">IMPLEMENTATION
- NOTES</a></h1>
-<p class="Pp">It is the caller's responsibility to obtain a lock on the
- <var class="Fa">map</var> using <a class="Xr">vm_map_lock(9)</a> before
- calling this function.</p>
-<p class="Pp">This routine may call <a class="Xr">pmap_growkernel(9)</a> to grow
- the kernel's address space, if and only if the mapping is being made within
- the kernel address space, and if insufficient space remains in the
- <var class="Va">kernel_map</var>.</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_findspace</code>() function returns
- the value 0 if successful, and <var class="Fa">*addr</var> will contain the
- first virtual address in the found region; otherwise, the value 1 is
- returned.</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">pmap_growkernel(9)</a>, <a class="Xr">vm_map(9)</a>,
- <a class="Xr">vm_map_entry_resize_free(9)</a>,
- <a class="Xr">vm_map_lock(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>