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

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Date:	Wed, 11 Nov 2009 18:10:15 -0500
From:	fche@...hat.com (Frank Ch. Eigler)
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	Jeff Garzik <jeff@...zik.org>,
	Wu Fengguang <fengguang.wu@...el.com>,
	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

Arjan van de Ven <arjan@...radead.org> writes:

> [...]  ok let me rephrase that. What would a user DO with this inode
> number information, given that the filename is already passed on;
> what additional useful, not-infinitely-hard-to-get piece of
> information [...]

Perhaps "infinitely hard" is the wrong criterion, but passing inode
numbers lets a tracepoint client track changes to the same file, even
though the file may be renamed/unlinked over time.

- FChE
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