[PATCH RFC 6/8] ext4: open via dedicated fs bdev helpers

[Christian Brauner <brauner@kernel.org>]

Route opens through fs_bdev_file_open_by_path() so each external device
is registered against the correct superblock, and convert the matching
releases.

Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
---
 fs/ext4/super.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 6a77db4d3124..8108d999008e 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -5793,7 +5793,7 @@ failed_mount8: __maybe_unused
 	brelse(sbi->s_sbh);
 	if (sbi->s_journal_bdev_file) {
 		invalidate_bdev(file_bdev(sbi->s_journal_bdev_file));
-		bdev_fput(sbi->s_journal_bdev_file);
+		fs_bdev_file_release(sbi->s_journal_bdev_file, sb);
 	}
 out_fail:
 	invalidate_bdev(sb->s_bdev);
@@ -5972,9 +5972,9 @@ static struct file *ext4_get_journal_blkdev(struct super_block *sb,
 	struct ext4_super_block *es;
 	int errno;
 
-	bdev_file = bdev_file_open_by_dev(j_dev,
+	bdev_file = fs_bdev_file_open_by_dev(j_dev,
 		BLK_OPEN_READ | BLK_OPEN_WRITE | BLK_OPEN_RESTRICT_WRITES,
-		sb, &fs_holder_ops);
+		sb, sb);
 	if (IS_ERR(bdev_file)) {
 		ext4_msg(sb, KERN_ERR,
 			 "failed to open journal device unknown-block(%u,%u) %ld",
@@ -6034,7 +6034,7 @@ static struct file *ext4_get_journal_blkdev(struct super_block *sb,
 out_bh:
 	brelse(bh);
 out_bdev:
-	bdev_fput(bdev_file);
+	fs_bdev_file_release(bdev_file, sb);
 	return ERR_PTR(errno);
 }
 
@@ -6073,7 +6073,7 @@ static journal_t *ext4_open_dev_journal(struct super_block *sb,
 out_journal:
 	ext4_journal_destroy(EXT4_SB(sb), journal);
 out_bdev:
-	bdev_fput(bdev_file);
+	fs_bdev_file_release(bdev_file, sb);
 	return ERR_PTR(errno);
 }
 
@@ -7492,7 +7492,7 @@ static void ext4_kill_sb(struct super_block *sb)
 	kill_block_super(sb);
 
 	if (bdev_file)
-		bdev_fput(bdev_file);
+		fs_bdev_file_release(bdev_file, sb);
 }
 
 static struct file_system_type ext4_fs_type = {

-- 
2.47.3