1<html><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 V1.78.1"><link rel="home" href="index.html" title="Linux Filesystems API"><link rel="up" href="functions.html#journal_level" title="Journal Level"><link rel="prev" href="functions.html" title="Functions"><link rel="next" href="API-journal-init-inode.html" title="journal_init_inode"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">journal_init_dev</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="functions.html">Prev</a>&#160;</td><th width="60%" align="center">Journal Level</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-journal-init-inode.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-journal-init-dev"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>journal_init_dev &#8212; 
2  creates and initialises a journal structure
3 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><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>&#160;</td><td>struct block_device * <var class="pdparam">fs_dev</var>, </td></tr><tr><td>&#160;</td><td>int <var class="pdparam">start</var>, </td></tr><tr><td>&#160;</td><td>int <var class="pdparam">len</var>, </td></tr><tr><td>&#160;</td><td>int <var class="pdparam">blocksize</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1103689492"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>bdev</code></em></span></dt><dd><p>
4     Block device on which to create the journal
5    </p></dd><dt><span class="term"><em class="parameter"><code>fs_dev</code></em></span></dt><dd><p>
6     Device which hold journalled filesystem for this journal.
7    </p></dd><dt><span class="term"><em class="parameter"><code>start</code></em></span></dt><dd><p>
8     Block nr Start of journal.
9    </p></dd><dt><span class="term"><em class="parameter"><code>len</code></em></span></dt><dd><p>
10     Length of the journal in blocks.
11    </p></dd><dt><span class="term"><em class="parameter"><code>blocksize</code></em></span></dt><dd><p>
12     blocksize of journalling device
13    </p></dd></dl></div></div><div class="refsect1"><a name="idp1103695228"></a><h2>Returns</h2><p>
14   a newly created journal_t *
15   </p><p>
16
17   journal_init_dev creates a journal which maps a fixed contiguous
18   range of blocks on an arbitrary block device.
19</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="functions.html">Prev</a>&#160;</td><td width="20%" align="center"><a accesskey="u" href="functions.html#journal_level">Up</a></td><td width="40%" align="right">&#160;<a accesskey="n" href="API-journal-init-inode.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Functions&#160;</td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top">&#160;<span class="phrase">journal_init_inode</span></td></tr></table></div></body></html>
20