linux-kernel - [PATCH v2 md-6.14 3/5] md: add a new callback pers->bitmap

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Message-ID: <20241218121745.2459-4-yukuai@kernel.org>
Date: Wed, 18 Dec 2024 20:17:43 +0800
From: yukuai@...nel.org
To: song@...nel.org,
	yukuai3@...wei.com
Cc: linux-raid@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	yi.zhang@...wei.com,
	yangerkun@...wei.com,
	Xiao Ni <xni@...hat.com>,
	Yu Kuai <yukuai@...nel.org>
Subject: [PATCH v2 md-6.14 3/5] md: add a new callback pers->bitmap_sector()

From: Yu Kuai <yukuai3@...wei.com>

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

Signed-off-by: Yu Kuai <yukuai3@...wei.com>
Reviewed-by: Xiao Ni <xni@...hat.com>
Signed-off-by: Yu Kuai <yukuai@...nel.org>
---
 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 {
-- 
2.43.0