linux-kernel - Re: [PATCH v4 2/4] [SCSI] sg: no need sg_open_exclusive

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Date:	Fri, 19 Jul 2013 17:19:29 -0400
From:	Jörn Engel <joern@...fs.org>
To:	Vaughan Cao <vaughan.cao@...cle.com>
Cc:	dgilbert@...erlog.com, JBottomley@...allels.com,
	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 2/4] [SCSI] sg: no need sg_open_exclusive_lock

On Wed, 17 July 2013 23:34:04 +0800, Vaughan Cao wrote:
> Date: Wed, 17 Jul 2013 23:34:04 +0800
> From: Vaughan Cao <vaughan.cao@...cle.com>
> To: joern@...fs.org
> Cc: dgilbert@...erlog.com, JBottomley@...allels.com,
> 	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
> 	vaughan.cao@...cle.com
> Subject: [PATCH v4 2/4] [SCSI] sg: no need sg_open_exclusive_lock
> X-Mailer: git-send-email 1.7.11.7
> 
> Open exclusive check is protected by o_sem, no need sg_open_exclusive_lock.
> @exclude is used to record which type of rwsem we are holding.
> 
> Signed-off-by: Vaughan Cao <vaughan.cao@...cle.com>
Reviewed-by: Joern Engel <joern@...fs.org>

Jörn

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