linux-kernel - Re: [PATCH 05/23] md/md-bitmap: remove parameter slot from bitmap

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Message-ID: <CALTww2-WsVnfqCwA_8c9Wv993Bs6L=f78UbFLddufspns8pjMA@mail.gmail.com>
Date: Mon, 26 May 2025 00:09:01 +0800
From: Xiao Ni <xni@...hat.com>
To: Yu Kuai <yukuai1@...weicloud.com>
Cc: hch@....de, colyli@...nel.org, song@...nel.org, yukuai3@...wei.com, 
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-raid@...r.kernel.org, yi.zhang@...wei.com, yangerkun@...wei.com, 
	johnny.chenyi@...wei.com
Subject: Re: [PATCH 05/23] md/md-bitmap: remove parameter slot from bitmap_create()

On Sat, May 24, 2025 at 2:18 PM Yu Kuai <yukuai1@...weicloud.com> wrote:
>
> From: Yu Kuai <yukuai3@...wei.com>
>
> All callers pass in '-1' for 'slot', hence it can be removed.
>
> Signed-off-by: Yu Kuai <yukuai3@...wei.com>
> Reviewed-by: Christoph Hellwig <hch@....de>
> ---
>  drivers/md/md-bitmap.c | 6 +++---
>  drivers/md/md-bitmap.h | 2 +-
>  drivers/md/md.c        | 6 +++---
>  3 files changed, 7 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c
> index 848626049dea..17d41a7b30ce 100644
> --- a/drivers/md/md-bitmap.c
> +++ b/drivers/md/md-bitmap.c
> @@ -2185,9 +2185,9 @@ static struct bitmap *__bitmap_create(struct mddev *mddev, int slot)
>         return ERR_PTR(err);
>  }
>
> -static int bitmap_create(struct mddev *mddev, int slot)
> +static int bitmap_create(struct mddev *mddev)
>  {
> -       struct bitmap *bitmap = __bitmap_create(mddev, slot);
> +       struct bitmap *bitmap = __bitmap_create(mddev, -1);
>
>         if (IS_ERR(bitmap))
>                 return PTR_ERR(bitmap);
> @@ -2649,7 +2649,7 @@ location_store(struct mddev *mddev, const char *buf, size_t len)
>                         }
>
>                         mddev->bitmap_info.offset = offset;
> -                       rv = bitmap_create(mddev, -1);
> +                       rv = bitmap_create(mddev);
>                         if (rv)
>                                 goto out;
>
> diff --git a/drivers/md/md-bitmap.h b/drivers/md/md-bitmap.h
> index 4d804c07dbdd..2b99ddef7a41 100644
> --- a/drivers/md/md-bitmap.h
> +++ b/drivers/md/md-bitmap.h
> @@ -77,7 +77,7 @@ struct bitmap_operations {
>         struct md_submodule_head head;
>
>         bool (*enabled)(void *data);
> -       int (*create)(struct mddev *mddev, int slot);
> +       int (*create)(struct mddev *mddev);
>         int (*resize)(struct mddev *mddev, sector_t blocks, int chunksize);
>
>         int (*load)(struct mddev *mddev);
> diff --git a/drivers/md/md.c b/drivers/md/md.c
> index 466087cef4f9..311e52d5173d 100644
> --- a/drivers/md/md.c
> +++ b/drivers/md/md.c
> @@ -6255,7 +6255,7 @@ int md_run(struct mddev *mddev)
>         }
>         if (err == 0 && pers->sync_request && md_bitmap_registered(mddev) &&
>             (mddev->bitmap_info.file || mddev->bitmap_info.offset)) {
> -               err = mddev->bitmap_ops->create(mddev, -1);
> +               err = mddev->bitmap_ops->create(mddev);
>                 if (err)
>                         pr_warn("%s: failed to create bitmap (%d)\n",
>                                 mdname(mddev), err);
> @@ -7324,7 +7324,7 @@ static int set_bitmap_file(struct mddev *mddev, int fd)
>         err = 0;
>         if (mddev->pers) {
>                 if (fd >= 0) {
> -                       err = mddev->bitmap_ops->create(mddev, -1);
> +                       err = mddev->bitmap_ops->create(mddev);
>                         if (!err)
>                                 err = mddev->bitmap_ops->load(mddev);
>
> @@ -7648,7 +7648,7 @@ static int update_array_info(struct mddev *mddev, mdu_array_info_t *info)
>                                 mddev->bitmap_info.default_offset;
>                         mddev->bitmap_info.space =
>                                 mddev->bitmap_info.default_space;
> -                       rv = mddev->bitmap_ops->create(mddev, -1);
> +                       rv = mddev->bitmap_ops->create(mddev);
>                         if (!rv)
>                                 rv = mddev->bitmap_ops->load(mddev);
>
> --
> 2.39.2
>

Reviewed-by: Xiao Ni <xni@...hat.com>