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

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Date:	Tue, 27 May 2008 22:26:03 -0700
From:	Greg KH <greg@...ah.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Randy Dunlap <randy.dunlap@...cle.com>, linux-next@...r.kernel.org,
	lkml <linux-kernel@...r.kernel.org>, jens.axboe@...cle.com,
	Kay Sievers <kay.sievers@...y.org>
Subject: Re: [PATCH -next] block: genhd errors when CONFIG_PROC_FS=n

On Tue, May 27, 2008 at 10:20:36PM -0700, Andrew Morton wrote:
> 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>

Yeah, sorry, missed that first time around, just added it to my tree
about an hour ago and sent out a response to Randy about it :)

thanks,

greg k-h
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