linux-kernel - Re: [PATCH -next] blkdev.h: fix warnings when CONFIG

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Date:	Wed, 17 Sep 2008 08:16:08 +1000
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Al Viro <viro@...iv.linux.org.uk>
Cc:	Jens Axboe <jens.axboe@...cle.com>,
	"Randy.Dunlap" <rdunlap@...otime.net>, linux-next@...r.kernel.org,
	akpm@...ux-foundation.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -next] blkdev.h: fix warnings when CONFIG_BLOCK=n

Hi Al,

On Tue, 16 Sep 2008 23:50:40 +0200 Jens Axboe <jens.axboe@...cle.com> wrote:
>
> On Tue, Sep 16 2008, Randy.Dunlap wrote:
> > From: Randy Dunlap <randy.dunlap@...cle.com>
> > 
> > Fix lots of build warnings when CONFIG_BLOCK=n:
> > 
> > linux-next-20080916/include/linux/blkdev.h:1093: warning: 'struct block_device' declared inside parameter list
> > linux-next-20080916/include/linux/blkdev.h:1093: warning: its scope is only this definition or declaration, which is probably not what you want
> > linux-next-20080916/include/linux/blkdev.h:1097: warning: 'struct gendisk' declared inside parameter list
> > linux-next-20080916/include/linux/blkdev.h:1105: warning: 'struct hd_geometry' declared inside parameter list
> > 
> > Signed-off-by: Randy Dunlap <randy.dunlap@...cle.com>
> > ---
> >  include/linux/blkdev.h |    4 ++++
> >  1 file changed, 4 insertions(+)
> > 
> > --- linux-next-20080916.orig/include/linux/blkdev.h
> > +++ linux-next-20080916/include/linux/blkdev.h
> > @@ -1089,6 +1089,10 @@ static inline long nr_blockdev_pages(voi
> >  
> >  #endif /* CONFIG_BLOCK */
> >  
> > +struct block_device;
> > +struct gendisk;
> > +struct hd_geometry;
> > +
> >  extern int __blkdev_driver_ioctl(struct block_device *, fmode_t, unsigned int,
> >  				 unsigned long);
> >  
> 
> Not sure which tree that build problem came from, it isn't from the
> block git tree.

I suspect this is caused by commit
44e95e9e8be95ec9ac6b0678e491883d99c0cfd8 ("beginning of methods
conversion") from your bdev tree. (the commit id is from next-20090816)

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au
http://www.canb.auug.org.au/~sfr/

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