Re: [PATCH v6.1] md: move initialization and destruction of 'io_acct_set' to md.c

[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: c567c86b90d4715081adfe5eb812141a5b6b4883

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)
6.12.y | Present (exact SHA1)
6.6.y | Present (exact SHA1)

Note: The patch differs from the upstream commit:
---
1:  c567c86b90d47 ! 1:  421676e64b498 md: move initialization and destruction of 'io_acct_set' to md.c
    @@ Metadata
      ## Commit message ##
         md: move initialization and destruction of 'io_acct_set' to md.c
     
    +    commit c567c86b90d4715081adfe5eb812141a5b6b4883 upstream.
    +
         'io_acct_set' is only used for raid0 and raid456, prepare to use it for
         raid1 and raid10, so that io accounting from different levels can be
         consistent.
    @@ Commit message
         Reviewed-by: Xiao Ni <xni@redhat.com>
         Signed-off-by: Song Liu <song@kernel.org>
         Link: https://lore.kernel.org/r/20230621165110.1498313-2-yukuai1@huaweicloud.com
    +    [Yu Kuai: This is the relied patch for commit 4a05f7ae3371 ("md/raid10:
    +    fix missing discard IO accounting"), kernel will panic while issuing
    +    discard to raid10 without this patch]
    +    Signed-off-by: Yu Kuai <yukuai3@huawei.com>
     
      ## drivers/md/md.c ##
     @@ drivers/md/md.c: int md_run(struct mddev *mddev)
---

Results of testing on various branches:

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