Re: [PATCH 6.1 1/2] md: factor out a helper from mddev_put()

[Sasha Levin <sashal@kernel.org>]

[ Sasha's backport helper bot ]

Hi,

✅ All tests passed successfully. No issues detected.
No action required from the submitter.

The upstream commit SHA1 provided is correct: 3d8d32873c7b6d9cec5b40c2ddb8c7c55961694f

WARNING: Author mismatch between patch and upstream commit:
Backport author: Yu Kuai<yukuai1@huaweicloud.com>
Commit author: Yu Kuai<yukuai3@huawei.com>

Status in newer kernel trees:
6.14.y | Present (exact SHA1)
6.13.y | Present (exact SHA1)
6.12.y | Present (exact SHA1)
6.6.y | Present (different SHA1: 452f50807917)

Note: The patch differs from the upstream commit:
---
1:  3d8d32873c7b6 ! 1:  c3ea0d86c3059 md: factor out a helper from mddev_put()
    @@ Metadata
      ## Commit message ##
         md: factor out a helper from mddev_put()
     
    +    commit 3d8d32873c7b6d9cec5b40c2ddb8c7c55961694f upstream.
    +
         There are no functional changes, prepare to simplify md_seq_ops in next
         patch.
     
         Signed-off-by: Yu Kuai <yukuai3@huawei.com>
         Signed-off-by: Song Liu <song@kernel.org>
         Link: https://lore.kernel.org/r/20230927061241.1552837-2-yukuai1@huaweicloud.com
    +    [minor context conflict]
    +    Signed-off-by: Yu Kuai <yukuai3@huawei.com>
     
      ## drivers/md/md.c ##
     @@ drivers/md/md.c: static inline struct mddev *mddev_get(struct mddev *mddev)
    @@ drivers/md/md.c: static inline struct mddev *mddev_get(struct mddev *mddev)
     +	 * Call queue_work inside the spinlock so that flush_workqueue() after
     +	 * mddev_find will succeed in waiting for the work to be done.
     +	 */
    ++	INIT_WORK(&mddev->del_work, mddev_delayed_delete);
     +	queue_work(md_misc_wq, &mddev->del_work);
     +}
     +
    @@ drivers/md/md.c: static inline struct mddev *mddev_get(struct mddev *mddev)
     -		/* Array is not configured at all, and not held active,
     -		 * so destroy it */
     -		set_bit(MD_DELETED, &mddev->flags);
    - 
    +-
     -		/*
     -		 * Call queue_work inside the spinlock so that
     -		 * flush_workqueue() after mddev_find will succeed in waiting
     -		 * for the work to be done.
     -		 */
    +-		INIT_WORK(&mddev->del_work, mddev_delayed_delete);
     -		queue_work(md_misc_wq, &mddev->del_work);
     -	}
     +	__mddev_put(mddev);
---

Results of testing on various branches:

| Branch                    | Patch Apply | Build Test |
|---------------------------|-------------|------------|
| stable/linux-6.1.y        |  Success    |  Success   |