linux-kernel - [PATCH v4 09/12] md: move finish_reshape to md_finish

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Message-Id: <20260105110300.1442509-10-linan666@huaweicloud.com>
Date: Mon,  5 Jan 2026 19:02:57 +0800
From: linan666@...weicloud.com
To: song@...nel.org,
	yukuai@...as.com,
	neil@...wn.name,
	namhyung@...il.com
Cc: linux-raid@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linan666@...weicloud.com,
	yangerkun@...wei.com,
	yi.zhang@...wei.com
Subject: [PATCH v4 09/12] md: move finish_reshape to md_finish_sync()

From: Li Nan <linan122@...wei.com>

finish_reshape implementations of raid10 and raid5 only update mddev
and rdev configurations. Move these operations to md_finish_sync() as
it is more appropriate.

No functional changes.

Signed-off-by: Li Nan <linan122@...wei.com>
Reviewed-by: Yu Kuai <yukuai@...as.com>
---
 drivers/md/md.c | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 7090a514b02b..29a931404dbf 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -9469,6 +9469,8 @@ static void md_finish_sync(struct mddev *mddev, enum sync_action action)
 				set_capacity_and_notify(mddev->gendisk,
 							mddev->array_sectors);
 		}
+		if (mddev->pers->finish_reshape)
+			mddev->pers->finish_reshape(mddev);
 		break;
 	/* */
 	case ACTION_CHECK:
@@ -10306,7 +10308,7 @@ void md_reap_sync_thread(struct mddev *mddev)
 {
 	struct md_rdev *rdev;
 	sector_t old_dev_sectors = mddev->dev_sectors;
-	bool is_reshaped = false;
+	bool is_reshaped = test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery);
 
 	/* resync has finished, collect result */
 	md_unregister_thread(mddev, &mddev->sync_thread);
@@ -10322,12 +10324,6 @@ void md_reap_sync_thread(struct mddev *mddev)
 			set_bit(MD_SB_CHANGE_DEVS, &mddev->sb_flags);
 		}
 	}
-	if (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery) &&
-	    mddev->pers->finish_reshape) {
-		mddev->pers->finish_reshape(mddev);
-		if (mddev_is_clustered(mddev))
-			is_reshaped = true;
-	}
 
 	/* If array is no-longer degraded, then any saved_raid_disk
 	 * information must be scrapped.
@@ -10354,8 +10350,9 @@ void md_reap_sync_thread(struct mddev *mddev)
 	 * be changed by md_update_sb, and MD_RECOVERY_RESHAPE is cleared,
 	 * so it is time to update size across cluster.
 	 */
-	if (mddev_is_clustered(mddev) && is_reshaped
-				      && !test_bit(MD_CLOSING, &mddev->flags))
+	if (mddev_is_clustered(mddev) && is_reshaped &&
+	    mddev->pers->finish_reshape &&
+	    !test_bit(MD_CLOSING, &mddev->flags))
 		mddev->cluster_ops->update_size(mddev, old_dev_sectors);
 	/* flag recovery needed just to double check */
 	set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
-- 
2.39.2