linux-kernel - Re: [PATCH 2/5] tcm: Unify INQUIRY subsystem plugin handling

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Date:	Thu, 14 Oct 2010 02:04:21 +0200
From:	Christoph Hellwig <hch@....de>
To:	"Nicholas A. Bellinger" <nab@...ux-iscsi.org>
Cc:	Christoph Hellwig <hch@....de>,
	linux-scsi <linux-scsi@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
	Mike Christie <michaelc@...wisc.edu>,
	Hannes Reinecke <hare@...e.de>,
	James Bottomley <James.Bottomley@...e.de>,
	Boaz Harrosh <bharrosh@...asas.com>,
	Jens Axboe <axboe@...nel.dk>,
	"Martin K. Petersen" <martin.petersen@...cle.com>,
	Douglas Gilbert <dgilbert@...erlog.com>,
	Richard Sharpe <realrichardsharpe@...il.com>
Subject: Re: [PATCH 2/5] tcm: Unify INQUIRY subsystem plugin handling

On Wed, Oct 13, 2010 at 01:19:49PM -0700, Nicholas A. Bellinger wrote:
> I should point out that the majority of values mentioned here (other
> than the two INQUIRY strings) are already present in struct
> se_dev_attrib and which appear as configfs attributes under
> under /sys/kernel/config/target/core/$HBA/$DEV/attrib/.  This means that
> the struct se_subsystem_api calls only really used by during init
> target_core_device.c:se_dev_set_default_attribs() and
> DEV_ATTRIB(dev)->block_size, etc are used in TCM Core code.
> 
> I am happy to include the two INQUIRY strings needed for emulation into
> struct se_subsystem_api directly, but I would still prefer to keep the
> function pointers for extracting values from subsystem specific code for
> the initial device attribute setup.

What's the point?  It's a lot of boilerplate code that does nothing
but obsfucating what's actually going on there.

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