[U-Boot] [PATCH V2] JFFS2: bug fix for summary support.

[Detlev Zundel]

Hi Baidu,

[...]

>> Looking over the changes, I do _see_ changes in code, so you should tell
>> us about them.
>>
>>> [...]
>>
>>> diff --git a/include/jffs2/jffs2.h b/include/jffs2/jffs2.h
>>> index 651f94c..5b006c0 100644
>>> --- a/include/jffs2/jffs2.h
>>> +++ b/include/jffs2/jffs2.h
>>> @@ -41,6 +41,16 @@
>>>  #include <asm/types.h>
>>>  #include <jffs2/load_kernel.h>
>>>
>>> +#ifdef CONFIG_JFFS2_SUMMARY
>>> +#ifndef CONFIG_SYS_JFFS2_SORT_FRAGMENTS
>>> +/*
>>> +we should define CONFIG_SYS_JFFS2_SORT_FRAGMENTS,if
>>> +CONFIG_JFFS2_SUMMARY is enabled.
>>> +*/
>>> +#define CONFIG_SYS_JFFS2_SORT_FRAGMENTS
>>> +#endif
>>> +#endif
>>> +
>>>  #define JFFS2_SUPER_MAGIC 0x72b6
>>>
>>>  /* Values we may expect to find in the 'magic' field */
>>
>> I liked the previous version better:
>>
>>> diff --git a/include/jffs2/jffs2.h b/include/jffs2/jffs2.h
>>> index 651f94c..c01a76e 100644
>>> --- a/include/jffs2/jffs2.h
>>> +++ b/include/jffs2/jffs2.h
>>> @@ -41,6 +41,17 @@
>>>  #include <asm/types.h>
>>>  #include <jffs2/load_kernel.h>
>>>
>>> +#ifdef CONFIG_JFFS2_SUMMARY
>>> +#ifndef CONFIG_SYS_JFFS2_SORT_FRAGMENTS
>>> +/*
>>> + *   if we define summary in jffs2, we also need to define
>>> + *   CONFIG_SYS_JFFS2_SORT_FRAGMENTS. If not, the data in latest inode may be
>>> + *  overwritten by the old one.
>>> +*/
>>> +#error "need to define CONFIG_SYS_JFFS2_SORT_FRAGMENTS,if summary is enabled"
>>> +#endif
>>> +#endif
>>> +
>>>  #define JFFS2_SUPER_MAGIC 0x72b6
>>
>> Why did you change this to the worse?
>>
>
> If we use summary in uboot, we MUST also define CONFIG_SYS_JFFS2_SORT_FRAGMENTS.
> The reason is :
> All the inodes of a file will not marked as obsolete, if they do not
> sort in the list struct b_node *, the latest data in inode may be
> overwritten by the older one.

Yes, this is what you wrote in your first version and what I would like
to see.  My question was why you deleted the (helpful) comment in your
second version...

Cheers
  Detlev

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