From: Yu Kuai <yukuai3@huawei.com>

This callback will be used in raid5 to convert io ranges from array to
bitmap.

Signed-off-by: Yu Kuai <yukuai3@huawei.com>
---
 drivers/md/md.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/md/md.h b/drivers/md/md.h
index 4ba93af36126..de6dadb9a40b 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -746,6 +746,9 @@ struct md_personality
 	void *(*takeover) (struct mddev *mddev);
 	/* Changes the consistency policy of an active array. */
 	int (*change_consistency_policy)(struct mddev *mddev, const char *buf);
+	/* convert io ranges from array to bitmap */
+	void (*bitmap_sector)(struct mddev *mddev, sector_t *offset,
+			      unsigned long *sectors);
 };
 
 struct md_sysfs_entry {
-- 
2.39.2

On Mon, Nov 18, 2024 at 7:44 PM Yu Kuai <yukuai1@huaweicloud.com> wrote:
>
> From: Yu Kuai <yukuai3@huawei.com>
>
> This callback will be used in raid5 to convert io ranges from array to
> bitmap.
>
> Signed-off-by: Yu Kuai <yukuai3@huawei.com>
> ---
>  drivers/md/md.h | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/drivers/md/md.h b/drivers/md/md.h
> index 4ba93af36126..de6dadb9a40b 100644
> --- a/drivers/md/md.h
> +++ b/drivers/md/md.h
> @@ -746,6 +746,9 @@ struct md_personality
>         void *(*takeover) (struct mddev *mddev);
>         /* Changes the consistency policy of an active array. */
>         int (*change_consistency_policy)(struct mddev *mddev, const char *buf);
> +       /* convert io ranges from array to bitmap */
> +       void (*bitmap_sector)(struct mddev *mddev, sector_t *offset,
> +                             unsigned long *sectors);
>  };
>
>  struct md_sysfs_entry {
> --
> 2.39.2
>

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