[f2fs-dev] [PATCH] [PATCH v2] f2fs: Add trace_f2fs_fault_report

[f2fs-dev] [PATCH] [PATCH v2] f2fs: Add trace_f2fs_fault_report

[liujinbao1]

From: liujinbao1 <liujinbao1@xiaomi.com>

Add trace_f2fs_fault_report to trigger reporting upon f2fs_bug_on,
need_fsck, stop_checkpoint, and handle_eio. Since f2fs_bug_on and
need_fsck can be triggered in hundreds of scenarios, define set_sbi_flag
as a macro to help capture the effective fault function and line number.

Signed-off-by: shengyong1 <shengyong1@xiaomi.com>
Signed-off-by: liujinbao1 <liujinbao1@xiaomi.com>
---
 fs/f2fs/f2fs.h              | 18 +++++++++++++++++-
 fs/f2fs/super.c             |  9 +++++++++
 include/trace/events/f2fs.h | 28 ++++++++++++++++++++++++++++
 3 files changed, 54 insertions(+), 1 deletion(-)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 56c4af4b1737..2249a68d6bf5 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -97,6 +97,15 @@ extern const char *f2fs_fault_name[FAULT_MAX];
 #define DEFAULT_FAILURE_RETRY_COUNT		1
 #endif
 
+enum {
+	REPORT_FAULT_NEED_FSCK,
+	REPORT_FAULT_STOP_CP,
+	REPORT_FAULT_MAX,
+};
+
+void f2fs_fault_report(struct super_block *sb, unsigned int err_code,
+			const char *func, unsigned int data);
+
 /*
  * For mount options
  */
@@ -2278,11 +2287,18 @@ static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
 	return test_bit(type, &sbi->s_flag);
 }
 
-static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
+static inline void __set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
 {
 	set_bit(type, &sbi->s_flag);
 }
 
+#define set_sbi_flag(sbi, type)				\
+do {							\
+	__set_sbi_flag(sbi, type);			\
+	if ((type) == SBI_NEED_FSCK)			\
+		f2fs_fault_report(sbi->sb, REPORT_FAULT_NEED_FSCK, __func__, __LINE__);	\
+} while (0)
+
 static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
 {
 	clear_bit(type, &sbi->s_flag);
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index ccf806b676f5..b431842751d6 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -4724,9 +4724,18 @@ static void f2fs_handle_critical_error(struct f2fs_sb_info *sbi,
 	 */
 }
 
+void f2fs_fault_report(struct super_block *sb, unsigned int err_code,
+			const char *func, unsigned int data)
+{
+	trace_f2fs_fault_report(sb, err_code, func, data);
+}
+
 void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io,
 						unsigned char reason)
 {
+	if (reason != STOP_CP_REASON_SHUTDOWN)
+		f2fs_fault_report(sbi->sb, REPORT_FAULT_STOP_CP, __func__, reason);
+
 	f2fs_build_fault_attr(sbi, 0, 0, FAULT_ALL);
 	if (!end_io)
 		f2fs_flush_merged_writes(sbi);
diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index 9364e6775562..b97bc3bf499a 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -2582,6 +2582,34 @@ DEFINE_EVENT(f2fs_priority_update, f2fs_priority_restore,
 	TP_ARGS(sbi, lock_name, is_write, p, orig_prio, new_prio)
 );
 
+TRACE_EVENT(f2fs_fault_report,
+
+	TP_PROTO(struct super_block *sb, unsigned int err_code,
+		const char *func, unsigned int data),
+
+	TP_ARGS(sb, err_code, func, data),
+
+	TP_STRUCT__entry(
+		__field(dev_t, dev)
+		__field(unsigned int, err_code)
+		__string(func, func)
+		__field(unsigned int, data)
+	),
+
+	TP_fast_assign(
+		__entry->dev		= sb->s_dev;
+		__entry->err_code	= err_code;
+		__assign_str(func, func);
+		__entry->data		= data;
+	),
+
+	TP_printk("dev = (%d,%d), err_code = %u, func = %s, data = %u",
+		show_dev(__entry->dev),
+		__entry->err_code,
+		__get_str(func),
+		__entry->data)
+);
+
 #endif /* _TRACE_F2FS_H */
 
  /* This part must be outside protection */
-- 
2.43.0



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Re: [f2fs-dev] [PATCH] [PATCH v2] f2fs: Add trace_f2fs_fault_report

[Chao Yu via Linux-f2fs-devel]

On 4/15/2026 7:42 PM, liujinbao1 wrote:
> From: liujinbao1 <liujinbao1@xiaomi.com>
> 
> Add trace_f2fs_fault_report to trigger reporting upon f2fs_bug_on,
> need_fsck, stop_checkpoint, and handle_eio. Since f2fs_bug_on and
> need_fsck can be triggered in hundreds of scenarios, define set_sbi_flag
> as a macro to help capture the effective fault function and line number.
> 
> Signed-off-by: shengyong1 <shengyong1@xiaomi.com>
> Signed-off-by: liujinbao1 <liujinbao1@xiaomi.com>
> ---
>   fs/f2fs/f2fs.h              | 18 +++++++++++++++++-
>   fs/f2fs/super.c             |  9 +++++++++
>   include/trace/events/f2fs.h | 28 ++++++++++++++++++++++++++++
>   3 files changed, 54 insertions(+), 1 deletion(-)
> 
> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> index 56c4af4b1737..2249a68d6bf5 100644
> --- a/fs/f2fs/f2fs.h
> +++ b/fs/f2fs/f2fs.h
> @@ -97,6 +97,15 @@ extern const char *f2fs_fault_name[FAULT_MAX];
>   #define DEFAULT_FAILURE_RETRY_COUNT		1
>   #endif
>   
> +enum {
> +	REPORT_FAULT_NEED_FSCK,
> +	REPORT_FAULT_STOP_CP,
> +	REPORT_FAULT_MAX,
> +};
> +
> +void f2fs_fault_report(struct super_block *sb, unsigned int err_code,
> +			const char *func, unsigned int data);
> +
>   /*
>    * For mount options
>    */
> @@ -2278,11 +2287,18 @@ static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
>   	return test_bit(type, &sbi->s_flag);
>   }
>   
> -static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
> +static inline void __set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
>   {
>   	set_bit(type, &sbi->s_flag);
>   }
>   
> +#define set_sbi_flag(sbi, type)				\
> +do {							\
> +	__set_sbi_flag(sbi, type);			\
> +	if ((type) == SBI_NEED_FSCK)			\
> +		f2fs_fault_report(sbi->sb, REPORT_FAULT_NEED_FSCK, __func__, __LINE__);	\
> +} while (0)

It's minor, but, what about?

void f2fs_fault_report(struct super_block *sb, unsigned int err_code,
				const char *func, unsigned int data);
static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
{
	set_bit(type, &sbi->s_flag);
	if ((type) == SBI_NEED_FSCK)
		f2fs_fault_report(sbi->sb, REPORT_FAULT_NEED_FSCK, __func__, __LINE__);
}

Thanks,

> +
>   static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
>   {
>   	clear_bit(type, &sbi->s_flag);
> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
> index ccf806b676f5..b431842751d6 100644
> --- a/fs/f2fs/super.c
> +++ b/fs/f2fs/super.c
> @@ -4724,9 +4724,18 @@ static void f2fs_handle_critical_error(struct f2fs_sb_info *sbi,
>   	 */
>   }
>   
> +void f2fs_fault_report(struct super_block *sb, unsigned int err_code,
> +			const char *func, unsigned int data)
> +{
> +	trace_f2fs_fault_report(sb, err_code, func, data);
> +}
> +
>   void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io,
>   						unsigned char reason)
>   {
> +	if (reason != STOP_CP_REASON_SHUTDOWN)
> +		f2fs_fault_report(sbi->sb, REPORT_FAULT_STOP_CP, __func__, reason);
> +
>   	f2fs_build_fault_attr(sbi, 0, 0, FAULT_ALL);
>   	if (!end_io)
>   		f2fs_flush_merged_writes(sbi);
> diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
> index 9364e6775562..b97bc3bf499a 100644
> --- a/include/trace/events/f2fs.h
> +++ b/include/trace/events/f2fs.h
> @@ -2582,6 +2582,34 @@ DEFINE_EVENT(f2fs_priority_update, f2fs_priority_restore,
>   	TP_ARGS(sbi, lock_name, is_write, p, orig_prio, new_prio)
>   );
>   
> +TRACE_EVENT(f2fs_fault_report,
> +
> +	TP_PROTO(struct super_block *sb, unsigned int err_code,
> +		const char *func, unsigned int data),
> +
> +	TP_ARGS(sb, err_code, func, data),
> +
> +	TP_STRUCT__entry(
> +		__field(dev_t, dev)
> +		__field(unsigned int, err_code)
> +		__string(func, func)
> +		__field(unsigned int, data)
> +	),
> +
> +	TP_fast_assign(
> +		__entry->dev		= sb->s_dev;
> +		__entry->err_code	= err_code;
> +		__assign_str(func, func);
> +		__entry->data		= data;
> +	),
> +
> +	TP_printk("dev = (%d,%d), err_code = %u, func = %s, data = %u",
> +		show_dev(__entry->dev),
> +		__entry->err_code,
> +		__get_str(func),
> +		__entry->data)
> +);
> +
>   #endif /* _TRACE_F2FS_H */
>   
>    /* This part must be outside protection */



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Re: [f2fs-dev] [PATCH] [PATCH v2] f2fs: Add trace_f2fs_fault_report

[Chao Yu via Linux-f2fs-devel]

On 4/17/2026 12:02 PM, liujinbao1 wrote:
> 
> 在 2026/4/17 09:26, Chao Yu 写道:
>> On 4/15/2026 7:42 PM, liujinbao1 wrote:
>>> From: liujinbao1 <liujinbao1@xiaomi.com>
>>>
>>> Add trace_f2fs_fault_report to trigger reporting upon f2fs_bug_on,
>>> need_fsck, stop_checkpoint, and handle_eio. Since f2fs_bug_on and
>>> need_fsck can be triggered in hundreds of scenarios, define set_sbi_flag
>>> as a macro to help capture the effective fault function and line number.
>>>
>>> Signed-off-by: shengyong1 <shengyong1@xiaomi.com>
>>> Signed-off-by: liujinbao1 <liujinbao1@xiaomi.com>
>>> ---
>>>   fs/f2fs/f2fs.h              | 18 +++++++++++++++++-
>>>   fs/f2fs/super.c             |  9 +++++++++
>>>   include/trace/events/f2fs.h | 28 ++++++++++++++++++++++++++++
>>>   3 files changed, 54 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
>>> index 56c4af4b1737..2249a68d6bf5 100644
>>> --- a/fs/f2fs/f2fs.h
>>> +++ b/fs/f2fs/f2fs.h
>>> @@ -97,6 +97,15 @@ extern const char *f2fs_fault_name[FAULT_MAX];
>>>   #define DEFAULT_FAILURE_RETRY_COUNT        1
>>>   #endif
>>>   +enum {
>>> +    REPORT_FAULT_NEED_FSCK,
>>> +    REPORT_FAULT_STOP_CP,
>>> +    REPORT_FAULT_MAX,
>>> +};
>>> +
>>> +void f2fs_fault_report(struct super_block *sb, unsigned int err_code,
>>> +            const char *func, unsigned int data);
>>> +
>>>   /*
>>>    * For mount options
>>>    */
>>> @@ -2278,11 +2287,18 @@ static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
>>>       return test_bit(type, &sbi->s_flag);
>>>   }
>>>   -static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
>>> +static inline void __set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
>>>   {
>>>       set_bit(type, &sbi->s_flag);
>>>   }
>>>   +#define set_sbi_flag(sbi, type)                \
>>> +do {                            \
>>> +    __set_sbi_flag(sbi, type);            \
>>> +    if ((type) == SBI_NEED_FSCK)            \
>>> +        f2fs_fault_report(sbi->sb, REPORT_FAULT_NEED_FSCK, __func__, __LINE__);    \
>>> +} while (0)
>>
>> It's minor, but, what about?
>>
>> void f2fs_fault_report(struct super_block *sb, unsigned int err_code,
>>                 const char *func, unsigned int data);
>> static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
>> {
>>     set_bit(type, &sbi->s_flag);
>>     if ((type) == SBI_NEED_FSCK)
>>         f2fs_fault_report(sbi->sb, REPORT_FAULT_NEED_FSCK, __func__, __LINE__);
>> }
>>
>> Thanks,
>>
> The advantage of defining|set_sbi_flag|as a macro is that,
> when|f2fs_bug_on|and|need_fsck|are triggered,
> the function name and line number where the fault occurred can be directly captured.
> If it were implemented as a function, the function and line number passed in would be invalid,
> leaving only the option to infer the fault location from the call stack.

Oh, right, I missed that.

Thanks,

> But I'm fine with either approach — I'll go with your suggestion.
> 
> Thanks
> 
>>> +
>>>   static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
>>>   {
>>>       clear_bit(type, &sbi->s_flag);
>>> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
>>> index ccf806b676f5..b431842751d6 100644
>>> --- a/fs/f2fs/super.c
>>> +++ b/fs/f2fs/super.c
>>> @@ -4724,9 +4724,18 @@ static void f2fs_handle_critical_error(struct f2fs_sb_info *sbi,
>>>        */
>>>   }
>>>   +void f2fs_fault_report(struct super_block *sb, unsigned int err_code,
>>> +            const char *func, unsigned int data)
>>> +{
>>> +    trace_f2fs_fault_report(sb, err_code, func, data);
>>> +}
>>> +
>>>   void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io,
>>>                           unsigned char reason)
>>>   {
>>> +    if (reason != STOP_CP_REASON_SHUTDOWN)
>>> +        f2fs_fault_report(sbi->sb, REPORT_FAULT_STOP_CP, __func__, reason);
>>> +
>>>       f2fs_build_fault_attr(sbi, 0, 0, FAULT_ALL);
>>>       if (!end_io)
>>>           f2fs_flush_merged_writes(sbi);
>>> diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
>>> index 9364e6775562..b97bc3bf499a 100644
>>> --- a/include/trace/events/f2fs.h
>>> +++ b/include/trace/events/f2fs.h
>>> @@ -2582,6 +2582,34 @@ DEFINE_EVENT(f2fs_priority_update, f2fs_priority_restore,
>>>       TP_ARGS(sbi, lock_name, is_write, p, orig_prio, new_prio)
>>>   );
>>>   +TRACE_EVENT(f2fs_fault_report,
>>> +
>>> +    TP_PROTO(struct super_block *sb, unsigned int err_code,
>>> +        const char *func, unsigned int data),
>>> +
>>> +    TP_ARGS(sb, err_code, func, data),
>>> +
>>> +    TP_STRUCT__entry(
>>> +        __field(dev_t, dev)
>>> +        __field(unsigned int, err_code)
>>> +        __string(func, func)
>>> +        __field(unsigned int, data)
>>> +    ),
>>> +
>>> +    TP_fast_assign(
>>> +        __entry->dev        = sb->s_dev;
>>> +        __entry->err_code    = err_code;
>>> +        __assign_str(func, func);
>>> +        __entry->data        = data;
>>> +    ),
>>> +
>>> +    TP_printk("dev = (%d,%d), err_code = %u, func = %s, data = %u",
>>> +        show_dev(__entry->dev),
>>> +        __entry->err_code,
>>> +        __get_str(func),
>>> +        __entry->data)
>>> +);
>>> +
>>>   #endif /* _TRACE_F2FS_H */
>>>      /* This part must be outside protection */
>>



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Re: [f2fs-dev] [PATCH] [PATCH v2] f2fs: Add trace_f2fs_fault_report

[Chao Yu via Linux-f2fs-devel]

On 4/15/2026 7:42 PM, liujinbao1 wrote:
> From: liujinbao1 <liujinbao1@xiaomi.com>
> 
> Add trace_f2fs_fault_report to trigger reporting upon f2fs_bug_on,
> need_fsck, stop_checkpoint, and handle_eio. Since f2fs_bug_on and
> need_fsck can be triggered in hundreds of scenarios, define set_sbi_flag
> as a macro to help capture the effective fault function and line number.
> 
> Signed-off-by: shengyong1 <shengyong1@xiaomi.com>
> Signed-off-by: liujinbao1 <liujinbao1@xiaomi.com>

Reviewed-by: Chao Yu <chao@kernel.org>

Thanks,


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Re: [f2fs-dev] [PATCH] [PATCH v2] f2fs: Add trace_f2fs_fault_report

[Jaegeuk Kim via Linux-f2fs-devel]

It seems this patch fails to build on linux-next. Could you please check?

On 04/15, liujinbao1 wrote:
> From: liujinbao1 <liujinbao1@xiaomi.com>
> 
> Add trace_f2fs_fault_report to trigger reporting upon f2fs_bug_on,
> need_fsck, stop_checkpoint, and handle_eio. Since f2fs_bug_on and
> need_fsck can be triggered in hundreds of scenarios, define set_sbi_flag
> as a macro to help capture the effective fault function and line number.
> 
> Signed-off-by: shengyong1 <shengyong1@xiaomi.com>
> Signed-off-by: liujinbao1 <liujinbao1@xiaomi.com>
> ---
>  fs/f2fs/f2fs.h              | 18 +++++++++++++++++-
>  fs/f2fs/super.c             |  9 +++++++++
>  include/trace/events/f2fs.h | 28 ++++++++++++++++++++++++++++
>  3 files changed, 54 insertions(+), 1 deletion(-)
> 
> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> index 56c4af4b1737..2249a68d6bf5 100644
> --- a/fs/f2fs/f2fs.h
> +++ b/fs/f2fs/f2fs.h
> @@ -97,6 +97,15 @@ extern const char *f2fs_fault_name[FAULT_MAX];
>  #define DEFAULT_FAILURE_RETRY_COUNT		1
>  #endif
>  
> +enum {
> +	REPORT_FAULT_NEED_FSCK,
> +	REPORT_FAULT_STOP_CP,
> +	REPORT_FAULT_MAX,
> +};
> +
> +void f2fs_fault_report(struct super_block *sb, unsigned int err_code,
> +			const char *func, unsigned int data);
> +
>  /*
>   * For mount options
>   */
> @@ -2278,11 +2287,18 @@ static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
>  	return test_bit(type, &sbi->s_flag);
>  }
>  
> -static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
> +static inline void __set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
>  {
>  	set_bit(type, &sbi->s_flag);
>  }
>  
> +#define set_sbi_flag(sbi, type)				\
> +do {							\
> +	__set_sbi_flag(sbi, type);			\
> +	if ((type) == SBI_NEED_FSCK)			\
> +		f2fs_fault_report(sbi->sb, REPORT_FAULT_NEED_FSCK, __func__, __LINE__);	\
> +} while (0)
> +
>  static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
>  {
>  	clear_bit(type, &sbi->s_flag);
> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
> index ccf806b676f5..b431842751d6 100644
> --- a/fs/f2fs/super.c
> +++ b/fs/f2fs/super.c
> @@ -4724,9 +4724,18 @@ static void f2fs_handle_critical_error(struct f2fs_sb_info *sbi,
>  	 */
>  }
>  
> +void f2fs_fault_report(struct super_block *sb, unsigned int err_code,
> +			const char *func, unsigned int data)
> +{
> +	trace_f2fs_fault_report(sb, err_code, func, data);
> +}
> +
>  void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io,
>  						unsigned char reason)
>  {
> +	if (reason != STOP_CP_REASON_SHUTDOWN)
> +		f2fs_fault_report(sbi->sb, REPORT_FAULT_STOP_CP, __func__, reason);
> +
>  	f2fs_build_fault_attr(sbi, 0, 0, FAULT_ALL);
>  	if (!end_io)
>  		f2fs_flush_merged_writes(sbi);
> diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
> index 9364e6775562..b97bc3bf499a 100644
> --- a/include/trace/events/f2fs.h
> +++ b/include/trace/events/f2fs.h
> @@ -2582,6 +2582,34 @@ DEFINE_EVENT(f2fs_priority_update, f2fs_priority_restore,
>  	TP_ARGS(sbi, lock_name, is_write, p, orig_prio, new_prio)
>  );
>  
> +TRACE_EVENT(f2fs_fault_report,
> +
> +	TP_PROTO(struct super_block *sb, unsigned int err_code,
> +		const char *func, unsigned int data),
> +
> +	TP_ARGS(sb, err_code, func, data),
> +
> +	TP_STRUCT__entry(
> +		__field(dev_t, dev)
> +		__field(unsigned int, err_code)
> +		__string(func, func)
> +		__field(unsigned int, data)
> +	),
> +
> +	TP_fast_assign(
> +		__entry->dev		= sb->s_dev;
> +		__entry->err_code	= err_code;
> +		__assign_str(func, func);
> +		__entry->data		= data;
> +	),
> +
> +	TP_printk("dev = (%d,%d), err_code = %u, func = %s, data = %u",
> +		show_dev(__entry->dev),
> +		__entry->err_code,
> +		__get_str(func),
> +		__entry->data)
> +);
> +
>  #endif /* _TRACE_F2FS_H */
>  
>   /* This part must be outside protection */
> -- 
> 2.43.0


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