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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>try_to_release_page</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="The Linux Kernel API" /><link rel="up" href="ch04s03.html" title="More Memory Management Functions" /><link rel="prev" href="re175.html" title="generic_file_aio_write" /><link rel="next" href="re177.html" title="zap_vma_ptes" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>try_to_release_page</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re175.html">Prev</a> </td><th width="60%" align="center">More Memory Management Functions</th><td width="20%" align="right"> <a accesskey="n" href="re177.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="try_to_release_page"><a id="API-try-to-release-page"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>try_to_release_page —
release old fs-specific metadata on a page
</p></div><div class="refsynopsisdiv" title="Synopsis"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" class="funcprototype-table"><tr><td><code class="funcdef">int <b class="fsfunc">try_to_release_page </b>(</code></td><td>struct page * <var class="pdparam">page</var>, </td></tr><tr><td> </td><td>gfp_t <var class="pdparam">gfp_mask</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2976954"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>page</code></em></span></dt><dd><p>
the page which the kernel is trying to free
</p></dd><dt><span class="term"><em class="parameter"><code>gfp_mask</code></em></span></dt><dd><p>
memory allocation flags (and I/O mode)
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2976998"></a><h2>Description</h2><p>
The address_space is to try to release any data against the page
(presumably at page->private). If the release was successful, return `1'.
Otherwise return zero.
</p><p>
This may also be called if PG_fscache is set on a page, indicating that the
page is known to the local caching routines.
</p><p>
The <em class="parameter"><code>gfp_mask</code></em> argument specifies whether I/O may be performed to release
this page (__GFP_IO), and whether the call may block (__GFP_WAIT & __GFP_FS).
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