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<h3 class="section">3.4 Locking Pages</h3>
<p><a name="index-locking-pages-352"></a><a name="index-memory-lock-353"></a><a name="index-paging-354"></a>
You can tell the system to associate a particular virtual memory page
with a real page frame and keep it that way &mdash; i.e., cause the page to
be paged in if it isn't already and mark it so it will never be paged
out and consequently will never cause a page fault. This is called
<dfn>locking</dfn> a page.
<p>The functions in this chapter lock and unlock the calling process'
pages.
<ul class="menu">
<li><a accesskey="1" href="Why-Lock-Pages.html#Why-Lock-Pages">Why Lock Pages</a>: Reasons to read this section.
<li><a accesskey="2" href="Locked-Memory-Details.html#Locked-Memory-Details">Locked Memory Details</a>: Everything you need to know locked
memory
<li><a accesskey="3" href="Page-Lock-Functions.html#Page-Lock-Functions">Page Lock Functions</a>: Here's how to do it.
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