@@ -165,6 +165,8 @@ static void destroy_super_work(struct work_struct *work)
destroy_work);
int i;
+ unregister_shrinker_delayed_finalize(&s->s_shrink);
+
WARN_ON(list_lru_count(&s->s_dentry_lru));
WARN_ON(list_lru_count(&s->s_inode_lru));
list_lru_destroy(&s->s_dentry_lru);
@@ -337,7 +339,7 @@ void deactivate_locked_super(struct super_block *s)
{
struct file_system_type *fs = s->s_type;
if (atomic_dec_and_test(&s->s_active)) {
- unregister_shrinker(&s->s_shrink);
+ unregister_shrinker_delayed_initiate(&s->s_shrink);
fs->kill_sb(s);
put_filesystem(fs);
@@ -1929,6 +1929,11 @@ struct super_operations {
ssize_t (*quota_write)(struct super_block *, int, const char *, size_t, loff_t);
struct dquot **(*get_dquots)(struct inode *);
#endif
+ /*
+ * Shrinker may call these two function on destructing super_block
+ * till unregister_shrinker_delayed_finalize() has completed
+ * in destroy_super_work(), and they must care about that.
+ */
long (*nr_cached_objects)(struct super_block *,
struct shrink_control *);
long (*free_cached_objects)(struct super_block *,