From 679f3db7adead81f6e7874d424c9fb7d00f6c699 Mon Sep 17 00:00:00 2001
From: Yu Kuai <yukuai3@huawei.com>
Date: Thu, 9 Jan 2025 09:51:43 +0800
Subject: [PATCH] md: add a new callback pers->bitmap_sector()

BugLink: https://bugs.launchpad.net/bugs/2111953

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: Yu Kuai <yukuai1@huaweicloud.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Mehmet Basaran <mehmet.basaran@canonical.com>
---
 drivers/md/md.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/md/md.h b/drivers/md/md.h
index 0f8efdd1924b..c30040df7765 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -667,6 +667,9 @@ 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 {