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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>__mark_inode_dirty</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="ch01s06.html" title="Other Functions" /><link rel="prev" href="re117.html" title="unregister_filesystem" /><link rel="next" href="re119.html" title="writeback_inodes_sb" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>__mark_inode_dirty</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re117.html">Prev</a> </td><th width="60%" align="center">Other Functions</th><td width="20%" align="right"> <a accesskey="n" href="re119.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="__mark_inode_dirty"><a id="API---mark-inode-dirty"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>__mark_inode_dirty —
internal function
</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">void <b class="fsfunc">__mark_inode_dirty </b>(</code></td><td>struct inode * <var class="pdparam">inode</var>, </td></tr><tr><td> </td><td>int <var class="pdparam">flags</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id3114653"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>inode</code></em></span></dt><dd><p>
inode to mark
</p></dd><dt><span class="term"><em class="parameter"><code>flags</code></em></span></dt><dd><p>
what kind of dirty (i.e. I_DIRTY_SYNC)
Mark an inode as dirty. Callers should use mark_inode_dirty or
mark_inode_dirty_sync.
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id3114699"></a><h2>Description</h2><p>
Put the inode on the super block's dirty list.
</p><p>
CAREFUL! We mark it dirty unconditionally, but move it onto the
dirty list only if it is hashed or if it refers to a blockdev.
If it was not hashed, it will never be added to the dirty list
even if it is later hashed, as it will have been marked dirty already.
</p><p>
In short, make sure you hash any inodes _before_ you start marking
them dirty.
</p><p>
This function *must* be atomic for the I_DIRTY_PAGES case -
<code class="function">set_page_dirty</code> is called under spinlock in several places.
</p><p>
Note that for blockdevs, inode->dirtied_when represents the dirtying time of
the block-special inode (/dev/hda1) itself. And the ->dirtied_when field of
the kernel-internal blockdev inode represents the dirtying time of the
blockdev's pages. This is why for I_DIRTY_PAGES we always use
page->mapping->host, so the page-dirtying time is recorded in the internal
blockdev inode.
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