linux-kernel - [PATCH RFC -next v2 27/41] md/md-bitmap: merge md_bitmap_close_sync() into bitmap

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Message-Id: <20240814071113.346781-28-yukuai1@huaweicloud.com>
Date: Wed, 14 Aug 2024 15:10:59 +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 27/41] md/md-bitmap: merge md_bitmap_close_sync() 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.

Also change the parameter from bitmap to mddev, to avoid access
bitmap outside md-bitmap.c as much as possible.

Signed-off-by: Yu Kuai <yukuai3@...wei.com>
---
 drivers/md/md-bitmap.c | 9 ++++++---
 drivers/md/md-bitmap.h | 2 +-
 drivers/md/raid1.c     | 2 +-
 drivers/md/raid10.c    | 2 +-
 drivers/md/raid5.c     | 2 +-
 5 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c
index b3649f1d1200..ed814bcb1933 100644
--- a/drivers/md/md-bitmap.c
+++ b/drivers/md/md-bitmap.c
@@ -1671,7 +1671,7 @@ static void bitmap_end_sync(struct mddev *mddev, sector_t offset,
 	__bitmap_end_sync(mddev->bitmap, offset, blocks, true);
 }
 
-void md_bitmap_close_sync(struct bitmap *bitmap)
+static void bitmap_close_sync(struct mddev *mddev)
 {
 	/* Sync has finished, and any bitmap chunks that weren't synced
 	 * properly have been aborted.  It remains to us to clear the
@@ -1679,14 +1679,16 @@ void md_bitmap_close_sync(struct bitmap *bitmap)
 	 */
 	sector_t sector = 0;
 	sector_t blocks;
+	struct bitmap *bitmap = mddev->bitmap;
+
 	if (!bitmap)
 		return;
+
 	while (sector < bitmap->mddev->resync_max_sectors) {
 		__bitmap_end_sync(bitmap, sector, &blocks, false);
 		sector += blocks;
 	}
 }
-EXPORT_SYMBOL(md_bitmap_close_sync);
 
 void md_bitmap_cond_end_sync(struct bitmap *bitmap, sector_t sector, bool force)
 {
@@ -2017,7 +2019,7 @@ static int bitmap_load(struct mddev *mddev)
 		bitmap_start_sync(mddev, sector, &blocks, false);
 		sector += blocks;
 	}
-	md_bitmap_close_sync(bitmap);
+	bitmap_close_sync(mddev);
 
 	if (mddev->degraded == 0
 	    || bitmap->events_cleared == mddev->events)
@@ -2742,6 +2744,7 @@ static struct bitmap_operations bitmap_ops = {
 	.endwrite		= bitmap_endwrite,
 	.start_sync		= bitmap_start_sync,
 	.end_sync		= bitmap_end_sync,
+	.close_sync		= bitmap_close_sync,
 
 	.update_sb		= bitmap_update_sb,
 	.get_stats		= bitmap_get_stats,
diff --git a/drivers/md/md-bitmap.h b/drivers/md/md-bitmap.h
index ff0ca61147e9..47e157d9f6be 100644
--- a/drivers/md/md-bitmap.h
+++ b/drivers/md/md-bitmap.h
@@ -261,6 +261,7 @@ struct bitmap_operations {
 	bool (*start_sync)(struct mddev *mddev, sector_t offset,
 			   sector_t *blocks, bool degraded);
 	void (*end_sync)(struct mddev *mddev, sector_t offset, sector_t *blocks);
+	void (*close_sync)(struct mddev *mddev);
 
 	void (*update_sb)(struct bitmap *bitmap);
 	int (*get_stats)(struct bitmap *bitmap, struct md_bitmap_stats *stats);
@@ -270,7 +271,6 @@ struct bitmap_operations {
 void mddev_set_bitmap_ops(struct mddev *mddev);
 
 /* these are exported */
-void md_bitmap_close_sync(struct bitmap *bitmap);
 void md_bitmap_cond_end_sync(struct bitmap *bitmap, sector_t sector, bool force);
 void md_bitmap_sync_with_cluster(struct mddev *mddev,
 				 sector_t old_lo, sector_t old_hi,
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index e7e9e52db795..fffd94119f0a 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -2789,7 +2789,7 @@ static sector_t raid1_sync_request(struct mddev *mddev, sector_t sector_nr,
 		else /* completed sync */
 			conf->fullsync = 0;
 
-		md_bitmap_close_sync(mddev->bitmap);
+		mddev->bitmap_ops->close_sync(mddev);
 		close_sync(conf);
 
 		if (mddev_is_clustered(mddev)) {
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 694522fb5584..10df08394ebb 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -3222,7 +3222,7 @@ static sector_t raid10_sync_request(struct mddev *mddev, sector_t sector_nr,
 			}
 			conf->fullsync = 0;
 		}
-		md_bitmap_close_sync(mddev->bitmap);
+		mddev->bitmap_ops->close_sync(mddev);
 		close_sync(conf);
 		*skipped = 1;
 		return sectors_skipped;
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 89ae149bf28e..d2b8d2517abf 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -6501,7 +6501,7 @@ static inline sector_t raid5_sync_request(struct mddev *mddev, sector_t sector_n
 						    &sync_blocks);
 		else /* completed sync */
 			conf->fullsync = 0;
-		md_bitmap_close_sync(mddev->bitmap);
+		mddev->bitmap_ops->close_sync(mddev);
 
 		return 0;
 	}
-- 
2.39.2