5 files changed, 0 insertions, 76 deletions

diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt
index f42b90687d40..ee56a7d10da9 100644
--- a/Documentation/filesystems/vfs.txt
+++ b/Documentation/filesystems/vfs.txt
@@ -1187,12 +1187,6 @@ The underlying reason for the above rules is to make sure, that a
 mount can be accurately replicated (e.g. umounting and mounting again)
 based on the information found in /proc/mounts.
 
-A simple method of saving options at mount/remount time and showing
-them is provided with the save_mount_options() and
-generic_show_options() helper functions.  Please note, that using
-these may have drawbacks.  For more info see header comments for these
-functions in fs/namespace.c.
-
 Resources
 =========
 
diff --git a/fs/efivarfs/super.c b/fs/efivarfs/super.c
index d7a7c53803c1..5b68e4294faa 100644
--- a/fs/efivarfs/super.c
+++ b/fs/efivarfs/super.c
@@ -29,7 +29,6 @@ static const struct super_operations efivarfs_ops = {
         .statfs = simple_statfs,
         .drop_inode = generic_delete_inode,
         .evict_inode = efivarfs_evict_inode,
-        .show_options = generic_show_options,
 };
 
 static struct super_block *efivarfs_sb;
diff --git a/fs/namespace.c b/fs/namespace.c
index 544ab84642eb..0e1fdb306133 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1237,65 +1237,6 @@ struct vfsmount *mnt_clone_internal(const struct path *path)
         return &p->mnt;
 }
 
-static inline void mangle(struct seq_file *m, const char *s)
-{
-        seq_escape(m, s, " \t\n\\");
-}
-
-/*
- * Simple .show_options callback for filesystems which don't want to
- * implement more complex mount option showing.
- *
- * See also save_mount_options().
- */
-int generic_show_options(struct seq_file *m, struct dentry *root)
-{
-        const char *options;
-
-        rcu_read_lock();
-        options = rcu_dereference(root->d_sb->s_options);
-
-        if (options != NULL && options[0]) {
-                seq_putc(m, ',');
-                mangle(m, options);
-        }
-        rcu_read_unlock();
-
-        return 0;
-}
-EXPORT_SYMBOL(generic_show_options);
-
-/*
- * If filesystem uses generic_show_options(), this function should be
- * called from the fill_super() callback.
- *
- * The .remount_fs callback usually needs to be handled in a special
- * way, to make sure, that previous options are not overwritten if the
- * remount fails.
- *
- * Also note, that if the filesystem's .remount_fs function doesn't
- * reset all options to their default value, but changes only newly
- * given options, then the displayed options will not reflect reality
- * any more.
- */
-void save_mount_options(struct super_block *sb, char *options)
-{
-        BUG_ON(sb->s_options);
-        rcu_assign_pointer(sb->s_options, kstrdup(options, GFP_KERNEL));
-}
-EXPORT_SYMBOL(save_mount_options);
-
-void replace_mount_options(struct super_block *sb, char *options)
-{
-        char *old = sb->s_options;
-        rcu_assign_pointer(sb->s_options, options);
-        if (old) {
-                synchronize_rcu();
-                kfree(old);
-        }
-}
-EXPORT_SYMBOL(replace_mount_options);
-
 #ifdef CONFIG_PROC_FS
 /* iterator; we want it to have access to namespace_sem, thus here... */
 static void *m_start(struct seq_file *m, loff_t *pos)
diff --git a/fs/super.c b/fs/super.c
index dfb56a9665d8..6bc3352adcf3 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -168,7 +168,6 @@ static void destroy_super(struct super_block *s)
         WARN_ON(!list_empty(&s->s_mounts));
         put_user_ns(s->s_user_ns);
         kfree(s->s_subtype);
-        kfree(s->s_options);
         call_rcu(&s->rcu, destroy_super_rcu);
 }
 
diff --git a/include/linux/fs.h b/include/linux/fs.h
index bc0c054894b9..e265b2ea72c6 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1351,11 +1351,6 @@ struct super_block {
          */
         char *s_subtype;
 
-        /*
-         * Saved mount options for lazy filesystems using
-         * generic_show_options()
-         */
-        char __rcu *s_options;
         const struct dentry_operations *s_d_op; /* default d_op for dentries */
 
         /*
@@ -3033,10 +3028,6 @@ extern void setattr_copy(struct inode *inode, const struct iattr *attr);
 
 extern int file_update_time(struct file *file);
 
-extern int generic_show_options(struct seq_file *m, struct dentry *root);
-extern void save_mount_options(struct super_block *sb, char *options);
-extern void replace_mount_options(struct super_block *sb, char *options);
-
 static inline bool io_is_direct(struct file *filp)
 {
         return (filp->f_flags & O_DIRECT) || IS_DAX(filp->f_mapping->host);