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[PATCH v2 1/2] md: add helper rdev_needs_recovery()

Zheng Qixing posted 2 patches 6 months ago
There is a newer version of this series
[PATCH v2 1/2] md: add helper rdev_needs_recovery()
Posted by Zheng Qixing 6 months ago 
From: Zheng Qixing <zhengqixing@huawei.com>

Add a helper for checking if an rdev needs recovery.

Signed-off-by: Zheng Qixing <zhengqixing@huawei.com>
---
 drivers/md/md.c | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/drivers/md/md.c b/drivers/md/md.c
index ac85ec73a409..4ea956a80343 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -4835,6 +4835,16 @@ metadata_store(struct mddev *mddev, const char *buf, size_t len)
 static struct md_sysfs_entry md_metadata =
 __ATTR_PREALLOC(metadata_version, S_IRUGO|S_IWUSR, metadata_show, metadata_store);
 
+static bool rdev_needs_recovery(struct md_rdev *rdev, sector_t sectors)
+{
+	if (!test_bit(Journal, &rdev->flags) &&
+	    !test_bit(Faulty, &rdev->flags) &&
+	    !test_bit(In_sync, &rdev->flags) &&
+	    rdev->recovery_offset < sectors)
+		return true;
+	return false;
+}
+
 enum sync_action md_sync_action(struct mddev *mddev)
 {
 	unsigned long recovery = mddev->recovery;
@@ -8969,10 +8979,7 @@ static sector_t md_sync_position(struct mddev *mddev, enum sync_action action)
 		rcu_read_lock();
 		rdev_for_each_rcu(rdev, mddev)
 			if (rdev->raid_disk >= 0 &&
-			    !test_bit(Journal, &rdev->flags) &&
-			    !test_bit(Faulty, &rdev->flags) &&
-			    !test_bit(In_sync, &rdev->flags) &&
-			    rdev->recovery_offset < start)
+			    rdev_needs_recovery(rdev, start))
 				start = rdev->recovery_offset;
 		rcu_read_unlock();
 
@@ -9333,10 +9340,7 @@ void md_do_sync(struct md_thread *thread)
 				rdev_for_each_rcu(rdev, mddev)
 					if (rdev->raid_disk >= 0 &&
 					    mddev->delta_disks >= 0 &&
-					    !test_bit(Journal, &rdev->flags) &&
-					    !test_bit(Faulty, &rdev->flags) &&
-					    !test_bit(In_sync, &rdev->flags) &&
-					    rdev->recovery_offset < mddev->curr_resync)
+					    rdev_needs_recovery(rdev, mddev->curr_resync))
 						rdev->recovery_offset = mddev->curr_resync;
 				rcu_read_unlock();
 			}
-- 
2.39.2
Re: [PATCH v2 1/2] md: add helper rdev_needs_recovery()
Posted by Yu Kuai 6 months ago 
Hi,

在 2025/08/12 10:17, Zheng Qixing 写道:
> From: Zheng Qixing <zhengqixing@huawei.com>
> 
> Add a helper for checking if an rdev needs recovery.
> 
> Signed-off-by: Zheng Qixing <zhengqixing@huawei.com>
> ---
>   drivers/md/md.c | 20 ++++++++++++--------
>   1 file changed, 12 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/md/md.c b/drivers/md/md.c
> index ac85ec73a409..4ea956a80343 100644
> --- a/drivers/md/md.c
> +++ b/drivers/md/md.c
> @@ -4835,6 +4835,16 @@ metadata_store(struct mddev *mddev, const char *buf, size_t len)
>   static struct md_sysfs_entry md_metadata =
>   __ATTR_PREALLOC(metadata_version, S_IRUGO|S_IWUSR, metadata_show, metadata_store);
>   
> +static bool rdev_needs_recovery(struct md_rdev *rdev, sector_t sectors)
> +{
> +	if (!test_bit(Journal, &rdev->flags) &&
> +	    !test_bit(Faulty, &rdev->flags) &&
> +	    !test_bit(In_sync, &rdev->flags) &&
> +	    rdev->recovery_offset < sectors)
> +		return true;
> +	return false;
return directly:

return !test_bit(Journal, &rdev->flags) &&
	!test_bit(Faulty, &rdev->flags) &&
	!test_bit(In_sync, &rdev->flags) &&
	rdev->recovery_offset < sectors);

Otherwise, feel free to add
Reviewed-by: Yu Kuai <yukuai3@huawei.com>

Kuai

> +}
> +
>   enum sync_action md_sync_action(struct mddev *mddev)
>   {
>   	unsigned long recovery = mddev->recovery;
> @@ -8969,10 +8979,7 @@ static sector_t md_sync_position(struct mddev *mddev, enum sync_action action)
>   		rcu_read_lock();
>   		rdev_for_each_rcu(rdev, mddev)
>   			if (rdev->raid_disk >= 0 &&
> -			    !test_bit(Journal, &rdev->flags) &&
> -			    !test_bit(Faulty, &rdev->flags) &&
> -			    !test_bit(In_sync, &rdev->flags) &&
> -			    rdev->recovery_offset < start)
> +			    rdev_needs_recovery(rdev, start))
>   				start = rdev->recovery_offset;
>   		rcu_read_unlock();
>   
> @@ -9333,10 +9340,7 @@ void md_do_sync(struct md_thread *thread)
>   				rdev_for_each_rcu(rdev, mddev)
>   					if (rdev->raid_disk >= 0 &&
>   					    mddev->delta_disks >= 0 &&
> -					    !test_bit(Journal, &rdev->flags) &&
> -					    !test_bit(Faulty, &rdev->flags) &&
> -					    !test_bit(In_sync, &rdev->flags) &&
> -					    rdev->recovery_offset < mddev->curr_resync)
> +					    rdev_needs_recovery(rdev, mddev->curr_resync))
>   						rdev->recovery_offset = mddev->curr_resync;
>   				rcu_read_unlock();
>   			}
>
Re: [PATCH v2 1/2] md: add helper rdev_needs_recovery()
Posted by Zheng Qixing 6 months ago 
Hi,


在 2025/8/14 8:52, Yu Kuai 写道:
> Hi,
>
> 在 2025/08/12 10:17, Zheng Qixing 写道:
>> From: Zheng Qixing <zhengqixing@huawei.com>
>>
>> Add a helper for checking if an rdev needs recovery.
>>
>> Signed-off-by: Zheng Qixing <zhengqixing@huawei.com>
>> ---
>>   drivers/md/md.c | 20 ++++++++++++--------
>>   1 file changed, 12 insertions(+), 8 deletions(-)
>>
>> diff --git a/drivers/md/md.c b/drivers/md/md.c
>> index ac85ec73a409..4ea956a80343 100644
>> --- a/drivers/md/md.c
>> +++ b/drivers/md/md.c
>> @@ -4835,6 +4835,16 @@ metadata_store(struct mddev *mddev, const char 
>> *buf, size_t len)
>>   static struct md_sysfs_entry md_metadata =
>>   __ATTR_PREALLOC(metadata_version, S_IRUGO|S_IWUSR, metadata_show, 
>> metadata_store);
>>   +static bool rdev_needs_recovery(struct md_rdev *rdev, sector_t 
>> sectors)
>> +{
>> +    if (!test_bit(Journal, &rdev->flags) &&
>> +        !test_bit(Faulty, &rdev->flags) &&
>> +        !test_bit(In_sync, &rdev->flags) &&
>> +        rdev->recovery_offset < sectors)
>> +        return true;
>> +    return false;
> return directly:
>
> return !test_bit(Journal, &rdev->flags) &&
>     !test_bit(Faulty, &rdev->flags) &&
>     !test_bit(In_sync, &rdev->flags) &&
>     rdev->recovery_offset < sectors);
>
Okay.


Thanks,

Qixing


> Otherwise, feel free to add
> Reviewed-by: Yu Kuai <yukuai3@huawei.com>
>
> Kuai
>
>> +}
>> +
>>   enum sync_action md_sync_action(struct mddev *mddev)
>>   {
>>       unsigned long recovery = mddev->recovery;
>> @@ -8969,10 +8979,7 @@ static sector_t md_sync_position(struct mddev 
>> *mddev, enum sync_action action)
>>           rcu_read_lock();
>>           rdev_for_each_rcu(rdev, mddev)
>>               if (rdev->raid_disk >= 0 &&
>> -                !test_bit(Journal, &rdev->flags) &&
>> -                !test_bit(Faulty, &rdev->flags) &&
>> -                !test_bit(In_sync, &rdev->flags) &&
>> -                rdev->recovery_offset < start)
>> +                rdev_needs_recovery(rdev, start))
>>                   start = rdev->recovery_offset;
>>           rcu_read_unlock();
>>   @@ -9333,10 +9340,7 @@ void md_do_sync(struct md_thread *thread)
>>                   rdev_for_each_rcu(rdev, mddev)
>>                       if (rdev->raid_disk >= 0 &&
>>                           mddev->delta_disks >= 0 &&
>> -                        !test_bit(Journal, &rdev->flags) &&
>> -                        !test_bit(Faulty, &rdev->flags) &&
>> -                        !test_bit(In_sync, &rdev->flags) &&
>> -                        rdev->recovery_offset < mddev->curr_resync)
>> +                        rdev_needs_recovery(rdev, mddev->curr_resync))
>>                           rdev->recovery_offset = mddev->curr_resync;
>>                   rcu_read_unlock();
>>               }
>>
Re: [PATCH v2 1/2] md: add helper rdev_needs_recovery()
Posted by Paul Menzel 6 months ago 
Dear Zheng,


Thank you for your patch.

Am 12.08.25 um 04:17 schrieb Zheng Qixing:
> From: Zheng Qixing <zhengqixing@huawei.com>
> 
> Add a helper for checking if an rdev needs recovery.
> 
> Signed-off-by: Zheng Qixing <zhengqixing@huawei.com>
> ---
>   drivers/md/md.c | 20 ++++++++++++--------
>   1 file changed, 12 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/md/md.c b/drivers/md/md.c
> index ac85ec73a409..4ea956a80343 100644
> --- a/drivers/md/md.c
> +++ b/drivers/md/md.c
> @@ -4835,6 +4835,16 @@ metadata_store(struct mddev *mddev, const char *buf, size_t len)
>   static struct md_sysfs_entry md_metadata =
>   __ATTR_PREALLOC(metadata_version, S_IRUGO|S_IWUSR, metadata_show, metadata_store);
>   
> +static bool rdev_needs_recovery(struct md_rdev *rdev, sector_t sectors)
> +{
> +	if (!test_bit(Journal, &rdev->flags) &&
> +	    !test_bit(Faulty, &rdev->flags) &&
> +	    !test_bit(In_sync, &rdev->flags) &&
> +	    rdev->recovery_offset < sectors)
> +		return true;
> +	return false;
> +}
> +
>   enum sync_action md_sync_action(struct mddev *mddev)
>   {
>   	unsigned long recovery = mddev->recovery;
> @@ -8969,10 +8979,7 @@ static sector_t md_sync_position(struct mddev *mddev, enum sync_action action)
>   		rcu_read_lock();
>   		rdev_for_each_rcu(rdev, mddev)
>   			if (rdev->raid_disk >= 0 &&
> -			    !test_bit(Journal, &rdev->flags) &&
> -			    !test_bit(Faulty, &rdev->flags) &&
> -			    !test_bit(In_sync, &rdev->flags) &&
> -			    rdev->recovery_offset < start)
> +			    rdev_needs_recovery(rdev, start))
>   				start = rdev->recovery_offset;
>   		rcu_read_unlock();
>   
> @@ -9333,10 +9340,7 @@ void md_do_sync(struct md_thread *thread)
>   				rdev_for_each_rcu(rdev, mddev)
>   					if (rdev->raid_disk >= 0 &&
>   					    mddev->delta_disks >= 0 &&
> -					    !test_bit(Journal, &rdev->flags) &&
> -					    !test_bit(Faulty, &rdev->flags) &&
> -					    !test_bit(In_sync, &rdev->flags) &&
> -					    rdev->recovery_offset < mddev->curr_resync)
> +					    rdev_needs_recovery(rdev, mddev->curr_resync))
>   						rdev->recovery_offset = mddev->curr_resync;
>   				rcu_read_unlock();
>   			}

Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de>


Kind regards,

Paul

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