1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>typedef journal_t</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="data_types.html#structures" title="Structures"><link rel="prev" href="API-typedef-handle-t.html" title="typedef handle_t"><link rel="next" href="API-struct-handle-s.html" title="struct handle_s"></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">typedef journal_t</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-typedef-handle-t.html">Prev</a>&#160;</td><th width="60%" align="center">Structures</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-struct-handle-s.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-typedef-journal-t"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>typedef journal_t &#8212; 
2     The journal_t maintains all of the journaling state information for a single filesystem.
3 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">typedef journal_t;</pre></div><div class="refsect1"><a name="idp1103628404"></a><h2>Description</h2><p>
4   </p><p>
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6   journal_t is linked to from the fs superblock structure.
7   </p><p>
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9   We use the journal_t to keep track of all outstanding transaction
10   activity on the filesystem, and to manage the state of the log
11   writing process.
12   </p><p>
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14   This is an opaque datatype.
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