fs/ext4/mballoc.c

3791 		struct ext4_locality_group *lg;
3792 		lg = per_cpu_ptr(sbi->s_locality_groups, i);
3793 		mutex_init(&lg->lg_mutex);
3795 			INIT_LIST_HEAD(&lg->lg_prealloc_list[j]);
3796 		spin_lock_init(&lg->lg_prealloc_lock);
4284 	struct ext4_locality_group *lg = ac->ac_lg;
4286 	BUG_ON(lg == NULL);
4856 	struct ext4_locality_group *lg;
5015 	lg = ac->ac_lg;
5016 	if (lg == NULL)
5030 		list_for_each_entry_rcu(tmp_pa, &lg->lg_prealloc_list[i],
5329 	struct ext4_locality_group *lg;
5361 	lg = ac->ac_lg;
5362 	BUG_ON(lg == NULL);
5364 	pa->pa_node_lock.lg_lock = &lg->lg_prealloc_lock;
5911 					struct ext4_locality_group *lg,
5921 	spin_lock(&lg->lg_prealloc_lock);
5922 	list_for_each_entry_rcu(pa, &lg->lg_prealloc_list[order],
5924 				lockdep_is_held(&lg->lg_prealloc_lock)) {
5939 		/* only lg prealloc space */
5960 	spin_unlock(&lg->lg_prealloc_lock);
5987  * possible from this lg. That means pa_free cannot be updated.
5997 	struct ext4_locality_group *lg = ac->ac_lg;
6004 	/* Add the prealloc space to lg */
6005 	spin_lock(&lg->lg_prealloc_lock);
6006 	list_for_each_entry_rcu(tmp_pa, &lg->lg_prealloc_list[order],
6008 				lockdep_is_held(&lg->lg_prealloc_lock)) {
6029 					&lg->lg_prealloc_list[order]);
6030 	spin_unlock(&lg->lg_prealloc_lock);
6034 		ext4_mb_discard_lg_preallocations(sb, lg,