Unverified Commit 434f8d82 authored by Christian Brauner's avatar Christian Brauner
Browse files

fs: remove get_active_super() 

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

Link: https://lore.kernel.org/r/20231024-vfs-super-freeze-v2-6-599c19f4faac@kernel.org


Reviewed-by: default avatarDarrick J. Wong <djwong@kernel.org>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarJan Kara <jack@suse.cz>
Signed-off-by: default avatarChristian Brauner <brauner@kernel.org>
parent 49ef8832

fs/super.c

+0 −28
Original line number Diff line number Diff line
@@ -1027,34 +1027,6 @@ 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;

include/linux/fs.h

+0 −1
Original line number Diff line number Diff line
@@ -3121,7 +3121,6 @@ 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 *);