fs, block: remove bdev->bd_super

bdev->bd_super is unused now, remove it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Message-Id: <20230807112625.652089-5-hch@lst.de>
Signed-off-by: Christian Brauner <brauner@kernel.org>

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index c94ebf7..b24f5b9 100644 (file)
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -5572,7 +5572,6 @@ static int __ext4_fill_super(struct fs_context *fc, struct super_block *sb)
        spin_lock_init(&sbi->s_bdev_wb_lock);
        errseq_check_and_advance(&sb->s_bdev->bd_inode->i_mapping->wb_err,
                                 &sbi->s_bdev_wb_err);
-       sb->s_bdev->bd_super = sb;
        EXT4_SB(sb)->s_mount_state |= EXT4_ORPHAN_FS;
        ext4_orphan_cleanup(sb, es);
        EXT4_SB(sb)->s_mount_state &= ~EXT4_ORPHAN_FS;

diff --git a/fs/super.c b/fs/super.c
index e781226..7755cc2 100644 (file)
--- a/fs/super.c
+++ b/fs/super.c
@@ -1322,7 +1322,6 @@ int get_tree_bdev(struct fs_context *fc,
                }
 
                s->s_flags |= SB_ACTIVE;
-               bdev->bd_super = s;
        }
 
        BUG_ON(fc->root);
@@ -1395,7 +1394,6 @@ struct dentry *mount_bdev(struct file_system_type *fs_type,
                }
 
                s->s_flags |= SB_ACTIVE;
-               bdev->bd_super = s;
        }
 
        return dget(s->s_root);
@@ -1413,7 +1411,6 @@ void kill_block_super(struct super_block *sb)
 {
        struct block_device *bdev = sb->s_bdev;
 
-       bdev->bd_super = NULL;
        generic_shutdown_super(sb);
        sync_blockdev(bdev);
        blkdev_put(bdev, sb->s_type);

diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 0bad62c..d5c5e59 100644 (file)
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -52,7 +52,6 @@ struct block_device {
        atomic_t                bd_openers;
        spinlock_t              bd_size_lock; /* for bd_inode->i_size updates */
        struct inode *          bd_inode;       /* will die */
-       struct super_block *    bd_super;
        void *                  bd_claiming;
        void *                  bd_holder;
        const struct blk_holder_ops *bd_holder_ops;