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SubjectRe: [PATCH -next v2 2/7] md: factor out a helper to choose sync direction from md_check_recovery()
On Tue, 15 Aug 2023 11:09:52 +0800
Yu Kuai <yukuai1@huaweicloud.com> wrote:

> From: Yu Kuai <yukuai3@huawei.com>
>
> There are no functional changes, on the one hand make the code cleaner,
> on the other hand prevent following checkpatch error in the next patch to
> delay choosing sync direction to md_start_sync().
>
> ERROR: do not use assignment in if condition
> + } else if ((spares = remove_and_add_spares(mddev, NULL))) {
>
> Signed-off-by: Yu Kuai <yukuai3@huawei.com>
> ---
> drivers/md/md.c | 68 +++++++++++++++++++++++++++++++------------------
> 1 file changed, 43 insertions(+), 25 deletions(-)
>
> diff --git a/drivers/md/md.c b/drivers/md/md.c
> index 90815be1e80f..4846ff6d25b0 100644
> --- a/drivers/md/md.c
> +++ b/drivers/md/md.c
> @@ -9246,6 +9246,48 @@ static int remove_and_add_spares(struct mddev *mddev,
> return spares;
> }
>
> +static bool md_choose_sync_direction(struct mddev *mddev, int *spares)

The naming is little confusing because as a direction I would expect forward or
backward - from end to start or or from start to end. In this case you are
determining the type of the background operation needed. Assuming that reshape
is a kind of "sync" operation I would say "md_choose_sync_action".

Anyway, it looks good to me.

Thanks,
Mariusz

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