Re: remove dead bdi congestion leftovers

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On Wed, Jul 08, 2020 at 05:14:29PM -0600, Jens Axboe wrote:
> On 7/1/20 3:06 AM, Christoph Hellwig wrote:
> > Hi Jens,
> > 
> > we have a lot of bdi congestion related code that is left around without
> > any use.  This series removes it in preparation of sorting out the bdi
> > lifetime rules properly.
> 
> Please run series like this through a full compilation, for both this one
> and the previous series I had to fix up issues like this:
> 
> drivers/md/bcache/request.c: In function ‘bch_cached_dev_request_init’:
> drivers/md/bcache/request.c:1233:18: warning: unused variable ‘g’ [-Wunused-variable]
>  1233 |  struct gendisk *g = dc->disk.disk;
>       |                  ^
> drivers/md/bcache/request.c: In function ‘bch_flash_dev_request_init’:
> drivers/md/bcache/request.c:1320:18: warning: unused variable ‘g’ [-Wunused-variable]
>  1320 |  struct gendisk *g = d->disk;
>       |                  ^
> 
> Did the same here, applied it.

And just like the previous one I did, and the compiler did not complain.
There must be something about certain gcc versions not warning about
variables that are initialized but not otherwise used.



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