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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>Functions</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="ch05.html" title="Chapter 5. The Linux Journalling API" /><link rel="prev" href="re175.html" title="struct journal_s" /><link rel="next" href="re176.html" title="journal_init_dev" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Functions</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re175.html">Prev</a> </td><th width="60%" align="center">Chapter 5. The Linux Journalling API</th><td width="20%" align="right"> <a accesskey="n" href="re176.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="Functions"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="functions"></a>Functions</h2></div></div></div><div class="toc"><dl><dt><span class="sect2"><a href="ch05s03.html#journal_level">Journal Level</a></span></dt><dt><span class="sect2"><a href="ch05s03.html#transaction_level">Transasction Level</a></span></dt></dl></div><p>
The functions here are split into two groups those that
affect a journal as a whole, and those which are used to
manage transactions
</p><div class="sect2" title="Journal Level"><div class="titlepage"><div><div><h3 class="title"><a id="journal_level"></a>Journal Level</h3></div></div></div><div class="toc"><dl><dt><span class="refentrytitle"><a href="re176.html"><span>journal_init_dev</span></a></span><span class="refpurpose"> —
creates and initialises a journal structure
</span></dt><dt><span class="refentrytitle"><a href="re177.html"><span>journal_init_inode</span></a></span><span class="refpurpose"> —
creates a journal which maps to a inode.
</span></dt><dt><span class="refentrytitle"><a href="re178.html"><span>journal_create</span></a></span><span class="refpurpose"> —
Initialise the new journal file
</span></dt><dt><span class="refentrytitle"><a href="re179.html"><span>journal_load</span></a></span><span class="refpurpose"> —
Read journal from disk.
</span></dt><dt><span class="refentrytitle"><a href="re180.html"><span>journal_destroy</span></a></span><span class="refpurpose"> —
Release a journal_t structure.
</span></dt><dt><span class="refentrytitle"><a href="re181.html"><span>journal_check_used_features</span></a></span><span class="refpurpose"> —
Check if features specified are used.
</span></dt><dt><span class="refentrytitle"><a href="re182.html"><span>journal_check_available_features</span></a></span><span class="refpurpose"> —
Check feature set in journalling layer
</span></dt><dt><span class="refentrytitle"><a href="re183.html"><span>journal_set_features</span></a></span><span class="refpurpose"> —
Mark a given journal feature in the superblock
</span></dt><dt><span class="refentrytitle"><a href="re184.html"><span>journal_update_format</span></a></span><span class="refpurpose"> —
Update on-disk journal structure.
</span></dt><dt><span class="refentrytitle"><a href="re185.html"><span>journal_flush</span></a></span><span class="refpurpose"> —
Flush journal
</span></dt><dt><span class="refentrytitle"><a href="re186.html"><span>journal_wipe</span></a></span><span class="refpurpose"> —
Wipe journal contents
</span></dt><dt><span class="refentrytitle"><a href="re187.html"><span>journal_abort</span></a></span><span class="refpurpose"> —
Shutdown the journal immediately.
</span></dt><dt><span class="refentrytitle"><a href="re188.html"><span>journal_errno</span></a></span><span class="refpurpose"> —
returns the journal's error state.
</span></dt><dt><span class="refentrytitle"><a href="re189.html"><span>journal_clear_err</span></a></span><span class="refpurpose"> —
clears the journal's error state
</span></dt><dt><span class="refentrytitle"><a href="re190.html"><span>journal_ack_err</span></a></span><span class="refpurpose"> —
Ack journal err.
</span></dt><dt><span class="refentrytitle"><a href="re191.html"><span>journal_recover</span></a></span><span class="refpurpose"> —
recovers a on-disk journal
</span></dt><dt><span class="refentrytitle"><a href="re192.html"><span>journal_skip_recovery</span></a></span><span class="refpurpose"> —
Start journal and wipe exiting records
</span></dt></dl></div></div><div class="sect2" title="Transasction Level"><div class="titlepage"><div><div><h3 class="title"><a id="transaction_level"></a>Transasction Level</h3></div></div></div><div class="toc"><dl><dt><span class="refentrytitle"><a href="re193.html"><span>journal_start</span></a></span><span class="refpurpose"> —
Obtain a new handle.
</span></dt><dt><span class="refentrytitle"><a href="re194.html"><span>journal_extend</span></a></span><span class="refpurpose"> —
extend buffer credits.
</span></dt><dt><span class="refentrytitle"><a href="re195.html"><span>journal_restart</span></a></span><span class="refpurpose"> —
restart a handle.
</span></dt><dt><span class="refentrytitle"><a href="re196.html"><span>journal_lock_updates</span></a></span><span class="refpurpose"> —
establish a transaction barrier.
</span></dt><dt><span class="refentrytitle"><a href="re197.html"><span>journal_unlock_updates</span></a></span><span class="refpurpose"> —
release barrier
</span></dt><dt><span class="refentrytitle"><a href="re198.html"><span>journal_get_write_access</span></a></span><span class="refpurpose"> —
notify intent to modify a buffer for metadata (not data) update.
</span></dt><dt><span class="refentrytitle"><a href="re199.html"><span>journal_get_create_access</span></a></span><span class="refpurpose"> —
notify intent to use newly created bh
</span></dt><dt><span class="refentrytitle"><a href="re200.html"><span>journal_get_undo_access</span></a></span><span class="refpurpose"> —
Notify intent to modify metadata with non-rewindable consequences
</span></dt><dt><span class="refentrytitle"><a href="re201.html"><span>journal_dirty_data</span></a></span><span class="refpurpose"> —
mark a buffer as containing dirty data to be flushed
</span></dt><dt><span class="refentrytitle"><a href="re202.html"><span>journal_dirty_metadata</span></a></span><span class="refpurpose"> —
mark a buffer as containing dirty metadata
</span></dt><dt><span class="refentrytitle"><a href="re203.html"><span>journal_forget</span></a></span><span class="refpurpose"> —
<code class="function">bforget</code> for potentially-journaled buffers.
</span></dt><dt><span class="refentrytitle"><a href="re204.html"><span>journal_stop</span></a></span><span class="refpurpose"> —
complete a transaction
</span></dt><dt><span class="refentrytitle"><a href="re205.html"><span>journal_force_commit</span></a></span><span class="refpurpose"> —
force any uncommitted transactions
</span></dt><dt><span class="refentrytitle"><a href="re206.html"><span>journal_try_to_free_buffers</span></a></span><span class="refpurpose"> —
try to free page buffers.
</span></dt><dt><span class="refentrytitle"><a href="re207.html"><span>journal_invalidatepage</span></a></span><span class="refpurpose"> —
invalidate a journal page
</span></dt></dl></div></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="re175.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch05.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="re176.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span>struct journal_s</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span>journal_init_dev</span></td></tr></table></div></body></html>
