linux-kernel - Re: [PATCH 1/2] udf : enable error print in udf_read

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Date:	Mon, 3 Oct 2011 16:20:44 +0900
From:	NamJae Jeon <linkinjeon@...il.com>
To:	Joe Perches <joe@...ches.com>
Cc:	jack@...e.cz, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] udf : enable error print in udf_read_tagged().

2011/10/3 Joe Perches <joe@...ches.com>:
> On Mon, 2011-10-03 at 13:55 +0900, Namjae Jeon wrote:
>> While reading metadata, if a problem occurs,
>> Print out only one of the five case.(It also does not show a checksum properly.)
>> Because currently it have been disable by undef udf_debug.
>> If there is a problem with scratched disc or loader, the user needs to know which error happened.
>> And I use pr_fmt instead of printk by joe's suggestion. I try to modify totally it to pr_fmt also.
> []
>> diff --git a/fs/udf/udfdecl.h b/fs/udf/udfdecl.h
> []
>> @@ -21,7 +23,7 @@
>>  #ifdef UDFFS_DEBUG
>>  #define udf_debug(f, a...) \
>>  do { \
>> -     printk(KERN_DEBUG "UDF-fs DEBUG %s:%d:%s: ", \
>> +     pr_debug("DEBUG %s:%d:%s: ", \
>>               __FILE__, __LINE__, __func__); \
>>       printk(f, ##a); \
>
> This isn't the same.
>
> You should probably just use
>
> #define udf_debug(fmt, ...)                                             \
>        pr_debug("DEBUG %s:%d:%s: " fmt,                                \
>                 __FILE__, __LINE__, __func__, __VA_ARGS__)
>
> or maybe let dynamic_debug add
> __FILE__, __LINE__ and __func__
> via the appropriate controls,
> so this might be appropriate.
>
> #define udf_debug(fmt, ...)                                             \
>        pr_debug("DEBUG " fmt, __VA_ARGS__)
>
Thanks joe~
>
>
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