linux-kernel - Re: [PATCH] vfs: Add a trace point in the mark_inode

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Date:	Tue, 10 Nov 2009 22:34:56 -0800
From:	Arjan van de Ven <arjan@...radead.org>
To:	Wu Fengguang <fengguang.wu@...el.com>
Cc:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	Christoph Hellwig <hch@...radead.org>,
	Al Viro <viro@...IV.linux.org.uk>, mingo@...e.hu,
	Frederic Weisbecker <fweisbec@...il.com>,
	auke-jan.h.kok@...el.com
Subject: Re: [PATCH] vfs: Add a trace point in the mark_inode_dirty function

On Wed, 11 Nov 2009 10:01:08 +0800
Wu Fengguang <fengguang.wu@...el.com> wrote:

> Hi Arjan,
> 
> > +	TP_printk("task=%i (%s) file=%s dev=%s",
> > +		__entry->pid, __entry->comm, __entry->file,
> > __entry->dev)
> 
> Maybe this is enough for POWERTOP, however for general use, the dirty
> type(data/metadata) and inode number may be valuable to some users?

what can a user do with an inode number????

-- 
Arjan van de Ven 	Intel Open Source Technology Centre
For development, discussion and tips for power savings, 
visit http://www.lesswatts.org
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