vfs: drop lock/unlock super

Removed s_lock from super_block and removed lock/unlock super.

Signed-off-by: Marco Stornelli <marco.stornelli@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 0 insertions, 23 deletions

diff --git a/fs/super.c b/fs/super.c
index a3bc935069d9..12f123712161 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -186,15 +186,8 @@ static struct super_block *alloc_super(struct file_system_type *type, int flags)
                 spin_lock_init(&s->s_inode_lru_lock);
                 INIT_LIST_HEAD(&s->s_mounts);
                 init_rwsem(&s->s_umount);
-                mutex_init(&s->s_lock);
                 lockdep_set_class(&s->s_umount, &type->s_umount_key);
                 /*
-                 * The locking rules for s_lock are up to the
-                 * filesystem. For example ext3fs has different
-                 * lock ordering than usbfs:
-                 */
-                lockdep_set_class(&s->s_lock, &type->s_lock_key);
-                /*
                  * sget() can have s_umount recursion.
                  *
                  * When it cannot find a suitable sb, it allocates a new
@@ -394,22 +387,6 @@ bool grab_super_passive(struct super_block *sb)
         return false;
 }
 
-/*
- * Superblock locking.  We really ought to get rid of these two.
- */
-void lock_super(struct super_block * sb)
-{
-        mutex_lock(&sb->s_lock);
-}
-
-void unlock_super(struct super_block * sb)
-{
-        mutex_unlock(&sb->s_lock);
-}
-
-EXPORT_SYMBOL(lock_super);
-EXPORT_SYMBOL(unlock_super);
-
 /**
  *      generic_shutdown_super  -       common helper for ->kill_sb()
  *      @sb: superblock to kill