From mboxrd@z Thu Jan  1 00:00:00 1970
From: Rolf Eike Beer <eike-kernel@sf-tec.de>
Subject: Re: [PATCH 3/3] tcm/fileio: Add UNMAP / Block DISCARD support
Date: Tue, 28 Sep 2010 23:06:22 +0200
Message-ID: <201009282306.23514.eike-kernel@sf-tec.de>
References: <1285627910-6492-1-git-send-email-nab@linux-iscsi.org>
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To: "Nicholas A. Bellinger" <nab@linux-iscsi.org>
Cc: linux-scsi <linux-scsi@vger.kernel.org>, linux-kernel <linux-kernel@vger.kernel.org>, Christoph Hellwig <hch@lst.de>, "Martin K. Petersen" <martin.petersen@oracle.com>, Douglas Gilbert <dgilbert@interlog.com>, Jens Axboe <axboe@kernel.dk>, FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>, Mike Christie <michaelc@cs.wisc.edu>, Hannes Reinecke <hare@suse.de>, James Bottomley <James.Bottomley@suse.de>, Konrad Rzeszutek Wilk <konrad@darnok.org>, Boaz Harrosh <bharrosh@panasas.com>, Richard Sharpe <realrichardsharpe@gmail.com>

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Nicholas A. Bellinger wrote:

> @@ -433,6 +448,42 @@ static int fd_emulate_scsi_cdb(struct se_task *task)
>  		if (ret < 0)
>  			return ret;
>  		break;
> +	case UNMAP:
> +		i = igrab(f->f_mapping->host);
> +		if (!(i)) {

.....

> +		if (!(S_ISBLK(i->i_mode))) {

.....

> +		if (!(bd)) {

Is this LISP or what? ;)

Eike

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