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-rw-r--r--fs/super.c1
-rw-r--r--include/linux/fs.h1
2 files changed, 2 insertions, 0 deletions
diff --git a/fs/super.c b/fs/super.c
index 5a4fe8b..6d4e817 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -72,6 +72,7 @@ static struct super_block *alloc_super(struct file_system_type *type)
INIT_LIST_HEAD(&s->s_inodes);
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
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 0a3ea52..e26de6805 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1296,6 +1296,7 @@ struct file_system_type {
struct file_system_type * next;
struct list_head fs_supers;
struct lock_class_key s_lock_key;
+ struct lock_class_key s_umount_key;
};
extern int get_sb_bdev(struct file_system_type *fs_type,
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