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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>journal_init_dev</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="Linux Filesystems API" /><link rel="up" href="ch05s03.html#journal_level" title="Journal Level" /><link rel="prev" href="ch05s03.html" title="Functions" /><link rel="next" href="re177.html" title="journal_init_inode" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>journal_init_dev</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ch05s03.html">Prev</a> </td><th width="60%" align="center">Journal Level</th><td width="20%" align="right"> <a accesskey="n" href="re177.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="journal_init_dev"><a id="API-journal-init-dev"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>journal_init_dev —
creates and initialises a journal structure
</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">journal_t * <b class="fsfunc">journal_init_dev </b>(</code></td><td>struct block_device * <var class="pdparam">bdev</var>, </td></tr><tr><td> </td><td>struct block_device * <var class="pdparam">fs_dev</var>, </td></tr><tr><td> </td><td>int <var class="pdparam">start</var>, </td></tr><tr><td> </td><td>int <var class="pdparam">len</var>, </td></tr><tr><td> </td><td>int <var class="pdparam">blocksize</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id3125812"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>bdev</code></em></span></dt><dd><p>
Block device on which to create the journal
</p></dd><dt><span class="term"><em class="parameter"><code>fs_dev</code></em></span></dt><dd><p>
Device which hold journalled filesystem for this journal.
</p></dd><dt><span class="term"><em class="parameter"><code>start</code></em></span></dt><dd><p>
Block nr Start of journal.
</p></dd><dt><span class="term"><em class="parameter"><code>len</code></em></span></dt><dd><p>
Length of the journal in blocks.
</p></dd><dt><span class="term"><em class="parameter"><code>blocksize</code></em></span></dt><dd><p>
blocksize of journalling device
</p></dd></dl></div></div><div class="refsect1" title="Returns"><a id="id3125907"></a><h2>Returns</h2><p>
a newly created journal_t *
</p><p>
journal_init_dev creates a journal which maps a fixed contiguous
range of blocks on an arbitrary block device.
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