linux-kernel - Re: [patch 2/3] libata: expose AN support to user space via sysfs

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Message-ID: <460B26AB.8060307@gmail.com>
Date:	Thu, 29 Mar 2007 11:38:35 +0900
From:	Tejun Heo <htejun@...il.com>
To:	Jeff Garzik <jgarzik@...ox.com>
CC:	Kristen Carlson Accardi <kristen.c.accardi@...el.com>,
	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	linux-ide@...r.kernel.org, linux-scsi <linux-scsi@...r.kernel.org>
Subject: Re: [patch 2/3] libata: expose AN support to user space via sysfs

Jeff Garzik wrote:
> AN is a generic concept that I feel will propagate elsewhere.

I think SCSI already has it or am I imagining things again?  :-)

> Though perhaps it should be in a 'capability_flags' file rather than a 
> 'media_change_event' file.

IMHO, if it's genhd.capability_flags then the flag should be 
MEDIA_CHANGE_NOTIFY not ASYNC_NOTIFICATION because AN itself doesn't 
imply any specific event.  It's just a notification mechanism, for ATAPI 
devices, it means media change, for PMP it has a different meaning, so I 
think we need to export the processed meaning not the specific mechanism 
to userland.

Thanks.

-- 
tejun
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