[v2,06/10] fs: remove get_active_super()

Commit Message

Christian Brauner Oct. 24, 2023, 1:01 p.m. UTC

This function is now unused so remove it. One less function that uses
the global superblock list.

Link: https://lore.kernel.org/r/[e-mail]
Reviewed-by: "Darrick J. Wong" <[e-mail]>
Reviewed-by: Christoph Hellwig <[e-mail]>
Reviewed-by: Jan Kara <[e-mail]>
Signed-off-by: Christian Brauner <[e-mail]>
---
 fs/super.c         | 28 ----------------------------
 include/linux/fs.h |  1 -
 2 files changed, 29 deletions(-)

Patch

diff --git a/fs/super.c b/fs/super.c
index ee0795ce09c7..c9658ddb53f7 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -1024,34 +1024,6 @@  void iterate_supers_type(struct file_system_type *type,
 
 EXPORT_SYMBOL(iterate_supers_type);
 
-/**
- * get_active_super - get an active reference to 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.  Returns the superblock with an active
- * reference or %NULL if none was found.
- */
-struct super_block *get_active_super(struct block_device *bdev)
-{
-	struct super_block *sb;
-
-	if (!bdev)
-		return NULL;
-
-	spin_lock(&sb_lock);
-	list_for_each_entry(sb, &super_blocks, s_list) {
-		if (sb->s_bdev == bdev) {
-			if (!grab_super(sb))
-				return NULL;
-			super_unlock_excl(sb);
-			return sb;
-		}
-	}
-	spin_unlock(&sb_lock);
-	return NULL;
-}
-
 struct super_block *user_get_super(dev_t dev, bool excl)
 {
 	struct super_block *sb;
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 03afc8b6f2af..5174e821d451 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -3053,7 +3053,6 @@  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_active_super(struct block_device *bdev);
 extern void drop_super(struct super_block *sb);
 extern void drop_super_exclusive(struct super_block *sb);
 extern void iterate_supers(void (*)(struct super_block *, void *), void *);