linux-kernel - Re: [PATCH 2/3] mg_disk: fix CONFIG

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Date:	Tue, 28 Apr 2009 11:19:34 -0400
From:	Mark Lord <liml@....ca>
To:	Tejun Heo <tj@...nel.org>
Cc:	axboe@...nel.dk, linux-kernel@...r.kernel.org, donari75@...il.com,
	bzolnier@...il.com, linux-ide@...r.kernel.org,
	alan@...rguk.ukuu.org.uk
Subject: Re: [PATCH 2/3] mg_disk: fix CONFIG_LBD=y warning

Tejun Heo wrote:
> From: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
> 
> drivers/block/mg_disk.c: In function ‘mg_dump_status’:
> drivers/block/mg_disk.c:265: warning: format ‘%ld’ expects type ‘long int’, but
> argument 2 has type ‘sector_t’
> 
> [ Impact: kill build warning ]
> 
> Cc: unsik Kim <donari75@...il.com>
> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
> Signed-off-by: Tejun Heo <tj@...nel.org>
> ---
>  drivers/block/mg_disk.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/block/mg_disk.c b/drivers/block/mg_disk.c
> index d3e72ad..f389835 100644
> --- a/drivers/block/mg_disk.c
> +++ b/drivers/block/mg_disk.c
> @@ -79,7 +79,7 @@ static void mg_dump_status(const char *msg, unsigned int stat,
>  			if (host->breq) {
>  				req = elv_next_request(host->breq);
>  				if (req)
> -					printk(", sector=%ld", req->sector);
> +					printk(", sector=%u", (u32)req->sector);
..

Eh?  Shouldn't that be fixed the other way around, like this:

  +					printk(", sector=%llu", (u64)req->sector);

This way, it will still give correct data when sector_t is a u64.

???
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