linux-kernel - Re: [linux-pm] [PATCH 1/9] PM / Hibernate: swap, switch to hibernate_io

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Message-ID: <4C1205DC.1080200@crca.org.au>
Date:	Fri, 11 Jun 2010 19:46:04 +1000
From:	Nigel Cunningham <ncunningham@...a.org.au>
To:	Jiri Slaby <jslaby@...e.cz>
CC:	rjw@...k.pl, linux-pm@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org, jirislaby@...il.com
Subject: Re: [linux-pm] [PATCH 1/9] PM / Hibernate: swap,	switch to hibernate_io_handle

Hi.

(Sorry Jiri - unintentionally originally replied only to you).

On 02/06/10 18:52, Jiri Slaby wrote:
 > Hi,
 >
 > I addressed the comments I got on the previous RFC. I left the handles
 > in place, the functions in hibernate_io_ops now works on them. Further
 > I got rid of the memory barriers and minimized global variables as much
 > as possible. Comments welcome.

I would like to hear the arguments for using these handles. I understand 
there may have been some previous discussion, but am unable to find it.

It seems far more sensible to me to not pass around a handle that 
virtually nothing actually uses, and instead store and utilise the state 
in the place where it is actually useful. If we had more than one struct 
hibernate_io_handle in use at a time, I could understand going this way. 
As it stands, however...

Regards,

Nigel
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