linux-kernel - Re: [PATCH 5/5] tracing/events: make modules have their own file

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Message-ID: <20090425172654.GC12135@kroah.com>
Date:	Sat, 25 Apr 2009 10:26:54 -0700
From:	Greg KH <greg@...ah.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Li Zefan <lizf@...fujitsu.com>
Subject: Re: [PATCH 5/5] tracing/events: make modules have their own
	file_operations structure

On Sat, Apr 25, 2009 at 12:20:35AM -0400, Steven Rostedt wrote:
> From: Steven Rostedt <srostedt@...hat.com>
> 
> For proper module reference counting, the file_operations that modules use
> must have the "owner" field set to the module. Unfortunately, the trace events
> use share file_operations. The same file_operations are used by all both
> kernel core and all modules.
> 
> This patch makes the modules allocate their own file_operations and
> copies the functions from the core kernel. This allows those file
> operations to be owned by the module.
> 
> Care is taken to free this code on module unload.
> 
> Thanks to Greg KH for reminding me that file_operations must be owned
> by the module to have reference counting take place.
> 
> Cc: Greg KH <greg@...ah.com>
> Signed-off-by: Steven Rostedt <rostedt@...dmis.org>

Looks good, feel free to add an:
	Acked-by: Greg Kroah-Hartman <gregkh@...e.de>
to it.

thanks,

greg k-h
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