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From: Vivek Goyal <vgoyal@redhat.com>
To: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
Cc: Jiri Kosina <jkosina@suse.cz>,
	Andrew Morton <akpm@linux-foundation.org>,
	Jens Axboe <axboe@kernel.dk>, Tejun Heo <tj@kernel.org>,
	linux-kernel@vger.kernel.org, Ben Hutchings <ben@decadent.org.uk>
Subject: Re: [PATCH 5/6] floppy: remove check for allocated queue on do_floppy_init error handling
Date: Fri, 10 Aug 2012 13:36:53 -0400	[thread overview]
Message-ID: <20120810173653.GK5416@redhat.com> (raw)
In-Reply-To: <1344542391-16474-6-git-send-email-herton.krzesinski@canonical.com>

On Thu, Aug 09, 2012 at 04:59:50PM -0300, Herton Ronaldo Krzesinski wrote:
> The check "if (disks[dr]->queue)" check is bogus, if we reach there
> for each dr should exist an queue allocated (note that we decrement dr
> first on entering the loop).
> 
> Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>

As mentioned in second patch, I like going trhough full array of drives
and do cleanup as needed instead of relying on "dr" variable. 

But if you don't like that, then I am not as such against this approach.
Was just trying to keep all put_disk() at one place.

Thanks
Vivek

> ---
>  drivers/block/floppy.c |   16 +++++++---------
>  1 file changed, 7 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
> index 3eafe93..438ffc9 100644
> --- a/drivers/block/floppy.c
> +++ b/drivers/block/floppy.c
> @@ -4332,15 +4332,13 @@ out_unreg_blkdev:
>  out_put_disk:
>  	while (dr--) {
>  		del_timer_sync(&motor_off_timer[dr]);
> -		if (disks[dr]->queue) {
> -			blk_cleanup_queue(disks[dr]->queue);
> -			/*
> -			 * put_disk() is not paired with add_disk() and
> -			 * will put queue reference one extra time. fix it.
> -			 */
> -			if (!disk_registered[dr])
> -				disks[dr]->queue = NULL;
> -		}
> +		blk_cleanup_queue(disks[dr]->queue);
> +		/*
> +		 * put_disk() is not paired with add_disk() and
> +		 * will put queue reference one extra time. fix it.
> +		 */
> +		if (!disk_registered[dr])
> +			disks[dr]->queue = NULL;
>  		put_disk(disks[dr]);
>  	}
>  	destroy_workqueue(floppy_wq);
> -- 
> 1.7.9.5

  reply	other threads:[~2012-08-10 17:37 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-08-09 19:59 Bug fixes/cleanups for floppy driver (v2) Herton Ronaldo Krzesinski
2012-08-09 19:59 ` [PATCH 1/6] floppy: don't call alloc_ordered_workqueue inside the alloc_disk loop Herton Ronaldo Krzesinski
2012-08-10 17:11   ` Vivek Goyal
2012-08-09 19:59 ` [PATCH 2/6] floppy: do put_disk on current dr if blk_init_queue fails Herton Ronaldo Krzesinski
2012-08-10 17:24   ` Vivek Goyal
2012-08-09 19:59 ` [PATCH 3/6] floppy: avoid leaking extra reference to queue on do_floppy_init error handling Herton Ronaldo Krzesinski
2012-08-10 17:25   ` Vivek Goyal
2012-08-09 19:59 ` [PATCH 4/6] floppy: properly handle failure on add_disk loop Herton Ronaldo Krzesinski
2012-08-10 17:34   ` Vivek Goyal
2012-08-09 19:59 ` [PATCH 5/6] floppy: remove check for allocated queue on do_floppy_init error handling Herton Ronaldo Krzesinski
2012-08-10 17:36   ` Vivek Goyal [this message]
2012-08-13 16:22     ` Herton Ronaldo Krzesinski
2012-08-09 19:59 ` [PATCH 6/6] floppy: use disk_registered for checking if a drive is present Herton Ronaldo Krzesinski
2012-08-10 17:35   ` Vivek Goyal

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