linux-kernel - [PATCH RFC -next v2 15/41] md/md-bitmap: merge md_bitmap_flush() into bitmap

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Message-Id: <20240814071113.346781-16-yukuai1@huaweicloud.com>
Date: Wed, 14 Aug 2024 15:10:47 +0800
From: Yu Kuai <yukuai1@...weicloud.com>
To: mariusz.tkaczyk@...ux.intel.com,
	hch@...radead.org,
	song@...nel.org
Cc: linux-kernel@...r.kernel.org,
	linux-raid@...r.kernel.org,
	yukuai3@...wei.com,
	yukuai1@...weicloud.com,
	yi.zhang@...wei.com,
	yangerkun@...wei.com
Subject: [PATCH RFC -next v2 15/41] md/md-bitmap: merge md_bitmap_flush() into bitmap_operations

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

So that the implementation won't be exposed, and it'll be possible
to invent a new bitmap by replacing bitmap_operations.

Signed-off-by: Yu Kuai <yukuai3@...wei.com>
---
 drivers/md/md-bitmap.c | 6 ++----
 drivers/md/md-bitmap.h | 2 +-
 drivers/md/md.c        | 3 ++-
 3 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c
index 94cf3c6e96e3..d1b43bce5953 100644
--- a/drivers/md/md-bitmap.c
+++ b/drivers/md/md-bitmap.c
@@ -1773,10 +1773,7 @@ void md_bitmap_dirty_bits(struct bitmap *bitmap, unsigned long s, unsigned long
 	}
 }
 
-/*
- * flush out any pending updates
- */
-void md_bitmap_flush(struct mddev *mddev)
+static void bitmap_flush(struct mddev *mddev)
 {
 	struct bitmap *bitmap = mddev->bitmap;
 	long sleep;
@@ -2722,6 +2719,7 @@ static struct bitmap_operations bitmap_ops = {
 	.create			= bitmap_create,
 	.load			= bitmap_load,
 	.destroy		= bitmap_destroy,
+	.flush			= bitmap_flush,
 };
 
 void mddev_set_bitmap_ops(struct mddev *mddev)
diff --git a/drivers/md/md-bitmap.h b/drivers/md/md-bitmap.h
index 9376bbeb4698..0212284c2b29 100644
--- a/drivers/md/md-bitmap.h
+++ b/drivers/md/md-bitmap.h
@@ -249,13 +249,13 @@ struct bitmap_operations {
 	int (*create)(struct mddev *mddev, int slot);
 	int (*load)(struct mddev *mddev);
 	void (*destroy)(struct mddev *mddev);
+	void (*flush)(struct mddev *mddev);
 };
 
 /* the bitmap API */
 void mddev_set_bitmap_ops(struct mddev *mddev);
 
 /* these are used only by md/bitmap */
-void md_bitmap_flush(struct mddev *mddev);
 
 void md_bitmap_print_sb(struct bitmap *bitmap);
 void md_bitmap_update_sb(struct bitmap *bitmap);
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 7aecd99d50e2..69d4b21c441e 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -6450,7 +6450,8 @@ static void __md_stop_writes(struct mddev *mddev)
 		mddev->pers->quiesce(mddev, 1);
 		mddev->pers->quiesce(mddev, 0);
 	}
-	md_bitmap_flush(mddev);
+
+	mddev->bitmap_ops->flush(mddev);
 
 	if (md_is_rdwr(mddev) &&
 	    ((!mddev->in_sync && !mddev_is_clustered(mddev)) ||
-- 
2.39.2