linux-kernel - Re: [PATCH -next] block: genhd errors when CONFIG_PROC

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Message-Id: <20080527222036.1141e43a.akpm@linux-foundation.org>
Date:	Tue, 27 May 2008 22:20:36 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Randy Dunlap <randy.dunlap@...cle.com>
Cc:	linux-next@...r.kernel.org, lkml <linux-kernel@...r.kernel.org>,
	jens.axboe@...cle.com, Greg KH <greg@...ah.com>,
	Kay Sievers <kay.sievers@...y.org>
Subject: Re: [PATCH -next] block: genhd errors when CONFIG_PROC_FS=n

On Fri, 23 May 2008 09:44:11 -0700 Randy Dunlap <randy.dunlap@...cle.com> wrote:

> From: Randy Dunlap <randy.dunlap@...cle.com>
> 
> block/genhd.c has build errors when CONFIG_PROC_FS=n, so omit some of
> its functions in that case.
> 
> /local/linsrc/linux-next-20080523/block/genhd.c: In function 'diskstats_start':
> /local/linsrc/linux-next-20080523/block/genhd.c:555: error: 'find_start' undeclared (first use in this function)
> /local/linsrc/linux-next-20080523/block/genhd.c:555: error: (Each undeclared identifier is reported only once
> /local/linsrc/linux-next-20080523/block/genhd.c:555: error: for each function it appears in.)
> make[2]: *** [block/genhd.o] Error 1
> 
> Signed-off-by: Randy Dunlap <randy.dunlap@...cle.com>
> ---
>  block/genhd.c |    2 ++
>  1 file changed, 2 insertions(+)
> 
> --- linux-next-20080523.orig/block/genhd.c
> +++ linux-next-20080523/block/genhd.c
> @@ -539,6 +539,7 @@ static struct device_type disk_type = {
>  	.release	= disk_release,
>  };
>  
> +#ifdef CONFIG_PROC_FS
>  /*
>   * aggregate disk stat collector.  Uses the same stats that the sysfs
>   * entries do, above, but makes them available through one seq_file.
> @@ -644,6 +645,7 @@ const struct seq_operations diskstats_op
>  	.stop	= diskstats_stop,
>  	.show	= diskstats_show
>  };
> +#endif /* CONFIG_PROC_FS */
>  
>  static void media_change_notify_thread(struct work_struct *work)
>  {

This is a fix against

commit ce8568d9535b4756ea304a97ea803314ce895d3c
Author: Greg Kroah-Hartman <gregkh@...e.de>
Date:   Thu May 22 17:21:08 2008 -0400

    block: make proc files seq_start use the class_find_device()
    
    Use the proper class iterator function instead of mucking around in the
    internals of the class structures.
    
Cc: Kay Sievers <kay.sievers@...y.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

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