From 14bc83e97fbdd4262a71ab6df3ccd584f1c4d756 Mon Sep 17 00:00:00 2001
From: Yu Kuai <yukuai3@huawei.com>
Date: Mon, 10 Feb 2025 15:33:20 +0800
Subject: [PATCH] md: add a new callback pers->bitmap_sector()

commit 0c984a283a3ea3f10bebecd6c57c1d41b2e4f518 upstream.

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

Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Reviewed-by: Xiao Ni <xni@redhat.com>
Link: https://lore.kernel.org/r/20250109015145.158868-4-yukuai1@huaweicloud.com
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/md/md.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/md/md.h b/drivers/md/md.h
index 7c9c13abd7ca..f395f4562bb9 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -661,6 +661,9 @@ 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 {