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-<table class="head">
- <tr>
- <td class="head-ltitle">VM_PAGE_INSERT(9)</td>
- <td class="head-vol">Kernel Developer's Manual</td>
- <td class="head-rtitle">VM_PAGE_INSERT(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_page_insert</code>,
- <code class="Nm">vm_page_remove</code> &#x2014; <span class="Nd">add/remove
- page from an object</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_page.h</a>&gt;</code></p>
-<p class="Pp"><var class="Ft">void</var>
- <br/>
- <code class="Fn">vm_page_insert</code>(<var class="Fa" style="white-space: nowrap;">vm_page_t
- m</var>, <var class="Fa" style="white-space: nowrap;">vm_object_t
- object</var>, <var class="Fa" style="white-space: nowrap;">vm_pindex_t
- pindex</var>);</p>
-<p class="Pp"><var class="Ft">void</var>
- <br/>
- <code class="Fn">vm_page_remove</code>(<var class="Fa" style="white-space: nowrap;">vm_page_t
- m</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_page_insert"><code class="Fn" id="vm_page_insert">vm_page_insert</code></a>()
- function adds a page to the given object at the given index. The page is
- added to both the VM page hash table and to the object's list of pages, but
- the hardware page tables are not updated. In the case of a user page, it
- will be faulted in when it is accessed. If the page is a kernel page, the
- caller is expected to handle adding the page to the kernel's pmap.</p>
-<p class="Pp">If <code class="Dv">PG_WRITEABLE</code> is set in the page's
- flags, <code class="Dv">OBJ_WRITEABLE</code> and
- <code class="Dv">OBJ_MIGHTBEDIRTY</code> are set in the object's flags.</p>
-<p class="Pp" id="vm_page_remove">The
- <a class="permalink" href="#vm_page_remove"><code class="Fn">vm_page_remove</code></a>()
- function removes the given page from its object, and from the VM page hash
- table. The page must be busy prior to this call, or the system will panic.
- The pmap entry for the page is not removed by this function.</p>
-<p class="Pp" id="vm_page_insert~2">The arguments to
- <a class="permalink" href="#vm_page_insert~2"><code class="Fn">vm_page_insert</code></a>()
- are:</p>
-<dl class="Bl-tag">
- <dt><var class="Fa">m</var></dt>
- <dd>The page to add to the object.</dd>
- <dt><var class="Fa">object</var></dt>
- <dd>The object the page should be added to.</dd>
- <dt><var class="Fa">pindex</var></dt>
- <dd>The index into the object the page should be at.</dd>
-</dl>
-<p class="Pp" id="vm_page_remove~2">The arguments to
- <a class="permalink" href="#vm_page_remove~2"><code class="Fn">vm_page_remove</code></a>()
- are:</p>
-<dl class="Bl-tag">
- <dt><var class="Fa">m</var></dt>
- <dd>The page to remove.</dd>
-</dl>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="IMPLEMENTATION_NOTES"><a class="permalink" href="#IMPLEMENTATION_NOTES">IMPLEMENTATION
- NOTES</a></h1>
-<p class="Pp">The index of a page in a VM object is the byte index into the same
- object truncated to a page boundary. For example, if the page size is 4096
- bytes, and the address in the object is 81944, the page index is 20.</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">Chad David</span>
- &lt;<a class="Mt" href="mailto:davidc@acns.ab.ca">davidc@acns.ab.ca</a>&gt;.</p>
-</section>
-</div>
-<table class="foot">
- <tr>
- <td class="foot-date">July 17, 2001</td>
- <td class="foot-os">FreeBSD 15.0</td>
- </tr>
-</table>