<html><head></head><body bgcolor="#FFFFFF"><div><span class="Apple-style-span" style>On Apr 19, 2012, at 12:15 AM, Shashidhara Shamaiah <<a href="mailto:Shashidhara.Shamaiah@mphasis.com">Shashidhara.Shamaiah@mphasis.com</a>> wrote:</span><br>
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<p class="MsoNormal">Hi,</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">I was looking at the source file fs/jbd/transaction.c . In the
function journal_invalidatepage the code calls the macro</p>
<p class="MsoNormal">PageLocked . I need to look at its implementation. I could locate
where the definition of PageLocked. Its not a function as its absent in the
System.map file. I have searched in internet. It was defined as a macro in
older kernels. But I could not get its definition in the recent kernels. Please
point me to the right direction.</p></div></div></blockquote><div><br></div>Yes, it's not a function, it's a macro. Page flags are cleverly implemented in the Linux kernel as macros. You wont be able to cscope into it. See <a href="http://lxr.linux.no/linux+v3.3.2/include/linux/page-flags.h">http://lxr.linux.no/linux+v3.3.2/include/linux/page-flags.h</a> for implementation details.<div>
<br></div><div>Venkatram Tummala </div><div><br><blockquote type="cite"><div><div class="WordSection1"><p class="MsoNormal"></p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Regards</p>
<p class="MsoNormal">Shashidhara</p>
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