linux-kernel - Re: [PATCH] UDF - use UDF_MAX_WRITE

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Message-ID: <20080413115025.GA6488@joi>
Date:	Sun, 13 Apr 2008 13:50:29 +0200
From:	Marcin Slusarz <marcin.slusarz@...il.com>
To:	Cyrill Gorcunov <gorcunov@...il.com>
Cc:	Jan Kara <jack@...e.cz>, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] UDF - use UDF_MAX_WRITE_VERSION instead of numbers

On Sat, Apr 12, 2008 at 11:40:08PM +0400, Cyrill Gorcunov wrote:
> Signed-off-by: Cyrill Gorcunov <gorcunov@...il.com>
> ---
> 
> Jan, the patch is over current yours for_mm branch
> 
> Yep, i know it exceeds 80 column *but* it looks much better
> in this way ;)
> 
> Index: linux-2.6.git/fs/udf/inode.c
> ===================================================================
> --- linux-2.6.git.orig/fs/udf/inode.c	2008-04-12 22:53:15.000000000 +0400
> +++ linux-2.6.git/fs/udf/inode.c	2008-04-12 23:34:28.000000000 +0400
> @@ -1732,7 +1732,7 @@ int8_t udf_add_aext(struct inode *inode,
>  		}
>  		if (epos->bh) {
>  			if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) ||
> -			    UDF_SB(inode->i_sb)->s_udfrev >= 0x0201)
> +			    UDF_SB(inode->i_sb)->s_udfrev >= UDF_MAX_WRITE_VERSION)
>  				udf_update_tag(epos->bh->b_data, loffset);
>  			else
>  				udf_update_tag(epos->bh->b_data,
I think this patch is wrong. Right now it doesn't change anything, but in future
when someone will add support for writing UDF > 2.01 (and bump UDF_MAX_WRITE_VERSION)
it will break for filesystems written with udfrev >= 2.01 && udfrev < UDF_MAX_WRITE_VERSION.

Marcin
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