fs: remove get_super

get_super is unused now, remove it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Message-Id: <20230811100828.1897174-17-hch@lst.de>
Signed-off-by: Christian Brauner <brauner@kernel.org>

diff --git a/fs/super.c b/fs/super.c
index 1a369fa3f0a6b52ff201355b84206deb0445ebeb..1c7c7485543763d8750b14415de6b137f636f315 100644 (file)
--- a/fs/super.c
+++ b/fs/super.c
@@ -790,43 +790,6 @@ void iterate_supers_type(struct file_system_type *type,
 
 EXPORT_SYMBOL(iterate_supers_type);
 
-/**
- * get_super - get the superblock of a device
- * @bdev: device to get the superblock for
- *
- * Scans the superblock list and finds the superblock of the file system
- * mounted on the device given. %NULL is returned if no match is found.
- */
-struct super_block *get_super(struct block_device *bdev)
-{
-       struct super_block *sb;
-
-       if (!bdev)
-               return NULL;
-
-       spin_lock(&sb_lock);
-rescan:
-       list_for_each_entry(sb, &super_blocks, s_list) {
-               if (hlist_unhashed(&sb->s_instances))
-                       continue;
-               if (sb->s_bdev == bdev) {
-                       sb->s_count++;
-                       spin_unlock(&sb_lock);
-                       down_read(&sb->s_umount);
-                       /* still alive? */
-                       if (sb->s_root && (sb->s_flags & SB_BORN))
-                               return sb;
-                       up_read(&sb->s_umount);
-                       /* nope, got unmounted */
-                       spin_lock(&sb_lock);
-                       __put_super(sb);
-                       goto rescan;
-               }
-       }
-       spin_unlock(&sb_lock);
-       return NULL;
-}
-
 /**
  * get_active_super - get an active reference to the superblock of a device
  * @bdev: device to get the superblock for

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 6867512907d6e593ec18cbd27dc52471b66418a0..14b5777a24a0b2f3eb268c4c911ed867eb0d25bc 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2913,7 +2913,6 @@ extern int vfs_readlink(struct dentry *, char __user *, int);
 extern struct file_system_type *get_filesystem(struct file_system_type *fs);
 extern void put_filesystem(struct file_system_type *fs);
 extern struct file_system_type *get_fs_type(const char *name);
-extern struct super_block *get_super(struct block_device *);
 extern struct super_block *get_active_super(struct block_device *bdev);
 extern void drop_super(struct super_block *sb);
 extern void drop_super_exclusive(struct super_block *sb);