linux-kernel - Re: [PATCH v10 Golden] Unified trace buffer

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Message-ID: <alpine.DEB.1.10.0809292359030.19533@gandalf.stny.rr.com>
Date:	Tue, 30 Sep 2008 00:00:11 -0400 (EDT)
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Mathieu Desnoyers <compudj@...stal.dyndns.org>
cc:	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	prasad@...ux.vnet.ibm.com,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"Frank Ch. Eigler" <fche@...hat.com>,
	David Wilder <dwilder@...ibm.com>, hch@....de,
	Martin Bligh <mbligh@...gle.com>,
	Christoph Hellwig <hch@...radead.org>,
	Masami Hiramatsu <mhiramat@...hat.com>,
	Steven Rostedt <srostedt@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Subject: Re: [PATCH v10 Golden] Unified trace buffer


On Mon, 29 Sep 2008, Mathieu Desnoyers wrote:
> 
> I also got some corruption of the offset field in the struct page I use.
> I think it might be related to the fact that I don't set the PG_private
> bit (slob does set it when the page is in its free pages list). However,
> given I'd like to pass the buffer pages to disk I/O and for network

Ah, I believe the disk IO uses the page frame. That might be a bit more 
difficult to pass the data to disk and still keep information on the
page frame.

-- Steve

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