linux-kernel - Re: [PATCH 1/1] cciss: procfs updates to display info about many volumes

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Message-Id: <20080219035956.d66052af.akpm@linux-foundation.org>
Date:	Tue, 19 Feb 2008 03:59:56 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Jens Axboe <jens.axboe@...cle.com>
Cc:	Mike Miller <mike.miller@...com>,
	LKML <linux-kernel@...r.kernel.org>,
	LKML-scsi <linux-scsi@...r.kernel.org>
Subject: Re: [PATCH 1/1] cciss: procfs updates to display info about many
 volumes

On Tue, 19 Feb 2008 11:48:18 +0100 Jens Axboe <jens.axboe@...cle.com> wrote:

> On Mon, Feb 11 2008, Mike Miller wrote:
> > Patch 1 of 1
> > 
> > This patch allows us to display information about all of the logical volumes
> > configured on a particular without stepping on memory even when there are
> > many volumes (128 or more) configured. This patch replaces the one submitted
> > on 20071214. See
> > http://groups.google.com/group/linux.kernel/browse_thread/thread/49a50244b19f8855/ba3dc95b23391521?hl=en&lnk=gst&q=cciss#ba3dc95b23391521
> > which has not been merged. That patch displayed information about only the
> > first logical volume on each controller and had negative side effects for some
> > installers.
> > Please consider this for inclusion.
> 
> It looks ok, but has some flaws. Try to disable cciss scsi and tape
> support:
> 
> In file included from drivers/block/cciss.c:231:
> drivers/block/cciss_scsi.c:1498:38: error: macro parameters must be
> comma-separated
> drivers/block/cciss.c: In function 'cciss_seq_show_header':
> drivers/block/cciss.c:272: error: implicit declaration of function
> 'cciss_seq_tape_report'
> drivers/block/cciss.c: In function 'cciss_proc_write':
> drivers/block/cciss.c:393: error: implicit declaration of function
> 'cciss_engage_scsi'
> 
> You macro definition of cciss_seq_tape_report() is totally busted.
> Either write is as a macro OR as a function.
> 
> Fix these up and resubmit, then I'll take it.
> 

It also need to be updated to use the non-racy proc_create(),
please, as per Alexey's comments.
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