linux-kernel - Re: [PATCH] btrfs: Correct printing of sector

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Date:	Tue, 30 Nov 2010 12:33:09 -0800
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	Miao Xie <miaox@...fujitsu.com>,
	Chris Mason <chris.mason@...cle.com>,
	linux-btrfs@...r.kernel.org,
	Linux Kernel Development <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] btrfs: Correct printing of sector_t

On Tue, 30 Nov 2010 21:30:01 +0100 (CET) Geert Uytterhoeven wrote:

> If CONFIG_LBDAF=y, `sector_t' becomes `u64' instead of `unsigned long':
> 
> fs/btrfs/inode.c: In function ‘btrfs_end_dio_bio’:
> fs/btrfs/inode.c:5717: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 4 has type ‘sector_t’
> 
> Hence always cast it to `unsigned long long' for printing.
> 
> Introduced by commit e65e1535542931e51189832264cd282e5899e4b9 ("btrfs: fix
> panic caused by direct IO")
> 
> Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>

Acked-by: Randy Dunlap <randy.dunlap@...cle.com>


> ---
>  fs/btrfs/inode.c |    6 +++---
>  1 files changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
> index 8039390..fbffe5f 100644
> --- a/fs/btrfs/inode.c
> +++ b/fs/btrfs/inode.c
> @@ -5712,9 +5712,9 @@ static void btrfs_end_dio_bio(struct bio *bio, int err)
>  
>  	if (err) {
>  		printk(KERN_ERR "btrfs direct IO failed ino %lu rw %lu "
> -		      "disk_bytenr %lu len %u err no %d\n",
> -		      dip->inode->i_ino, bio->bi_rw, bio->bi_sector,
> -		      bio->bi_size, err);
> +		      "disk_bytenr %llu len %u err no %d\n",
> +		      dip->inode->i_ino, bio->bi_rw,
> +		      (unsigned long long)bio->bi_sector, bio->bi_size, err);
>  		dip->errors = 1;
>  
>  		/*
> -- 
> 1.7.0.4
> 
> Gr{oetje,eeting}s,
> 
> 						Geert
> 
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org
> 
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
> 							    -- Linus Torvalds
> --
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---
~Randy
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