linux-kernel - [PATCH v5 4/8] md: return directly before setting did_set_md

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Message-Id: <20240201063404.772797-5-linan666@huaweicloud.com>
Date: Thu,  1 Feb 2024 14:34:00 +0800
From: linan666@...weicloud.com
To: song@...nel.org,
	neilb@...e.com,
	mariusz.tkaczyk@...ux.intel.com,
	shli@...com
Cc: linux-raid@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linan666@...weicloud.com,
	yukuai3@...wei.com,
	yi.zhang@...wei.com,
	houtao1@...wei.com,
	yangerkun@...wei.com
Subject: [PATCH v5 4/8] md: return directly before setting did_set_md_closing

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

There is nothing to do at 'out' before setting 'did_set_md_closing'
in md_ioctl(). Return directly, and it will help us to remove
'did_set_md_closing' later.

Signed-off-by: Li Nan <linan122@...wei.com>
---
 drivers/md/md.c | 23 ++++++++---------------
 1 file changed, 8 insertions(+), 15 deletions(-)

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 656080086052..5442e8e3c161 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -7636,10 +7636,8 @@ static int md_ioctl(struct block_device *bdev, blk_mode_t mode,
 	 * Commands dealing with the RAID driver but not any
 	 * particular array:
 	 */
-	if (cmd == RAID_VERSION) {
-		err = get_version(argp);
-		goto out;
-	}
+	if (cmd == RAID_VERSION)
+		return get_version(argp);
 
 	/*
 	 * Commands creating/starting a new array:
@@ -7654,23 +7652,20 @@ static int md_ioctl(struct block_device *bdev, blk_mode_t mode,
 			err = -ENODEV;
 		else
 			err = get_array_info(mddev, argp);
-		goto out;
+		return err;
 
 	case GET_DISK_INFO:
 		if (!mddev->raid_disks && !mddev->external)
 			err = -ENODEV;
 		else
 			err = get_disk_info(mddev, argp);
-		goto out;
+		return err;
 
 	case SET_DISK_FAULTY:
-		err = set_disk_faulty(mddev, new_decode_dev(arg));
-		goto out;
+		return set_disk_faulty(mddev, new_decode_dev(arg));
 
 	case GET_BITMAP_FILE:
-		err = get_bitmap_file(mddev, argp);
-		goto out;
-
+		return get_bitmap_file(mddev, argp);
 	}
 
 	if (cmd == HOT_REMOVE_DISK)
@@ -7686,13 +7681,11 @@ static int md_ioctl(struct block_device *bdev, blk_mode_t mode,
 		mutex_lock(&mddev->open_mutex);
 		if (mddev->pers && atomic_read(&mddev->openers) > 1) {
 			mutex_unlock(&mddev->open_mutex);
-			err = -EBUSY;
-			goto out;
+			return -EBUSY;
 		}
 		if (test_and_set_bit(MD_CLOSING, &mddev->flags)) {
 			mutex_unlock(&mddev->open_mutex);
-			err = -EBUSY;
-			goto out;
+			return -EBUSY;
 		}
 		did_set_md_closing = true;
 		mutex_unlock(&mddev->open_mutex);
-- 
2.39.2