763 		struct ext4_prealloc_space *pa;  in __mb_check_buddy()  local
764 		pa = list_entry(cur, struct ext4_prealloc_space, pa_group_list);  in __mb_check_buddy()
765 		ext4_get_group_no_and_offset(sb, pa->pa_pstart, &groupnr, &k);  in __mb_check_buddy()
767 		for (i = 0; i < pa->pa_len; i++)  in __mb_check_buddy()
3740 	struct ext4_prealloc_space *pa;  in ext4_mb_cleanup_pa()  local
3745 		pa = list_entry(cur, struct ext4_prealloc_space, pa_group_list);  in ext4_mb_cleanup_pa()
3746 		list_del(&pa->pa_group_list);  in ext4_mb_cleanup_pa()
3748 		kmem_cache_free(ext4_pspace_cachep, pa);  in ext4_mb_cleanup_pa()
4640 	struct ext4_prealloc_space *pa = ac->ac_pa;  in ext4_discard_allocated_blocks()  local
4644 	if (pa == NULL) {  in ext4_discard_allocated_blocks()
4663 	if (pa->pa_type == MB_INODE_PA) {  in ext4_discard_allocated_blocks()
4664 		spin_lock(&pa->pa_lock);  in ext4_discard_allocated_blocks()
4665 		pa->pa_free += ac->ac_b_ex.fe_len;  in ext4_discard_allocated_blocks()
4666 		spin_unlock(&pa->pa_lock);  in ext4_discard_allocated_blocks()
4674 				struct ext4_prealloc_space *pa)  in ext4_mb_use_inode_pa()  argument
4682 	start = pa->pa_pstart + (ac->ac_o_ex.fe_logical - pa->pa_lstart);  in ext4_mb_use_inode_pa()
4683 	end = min(pa->pa_pstart + EXT4_C2B(sbi, pa->pa_len),  in ext4_mb_use_inode_pa()
4690 	ac->ac_pa = pa;  in ext4_mb_use_inode_pa()
4692 	BUG_ON(start < pa->pa_pstart);  in ext4_mb_use_inode_pa()
4693 	BUG_ON(end > pa->pa_pstart + EXT4_C2B(sbi, pa->pa_len));  in ext4_mb_use_inode_pa()
4694 	BUG_ON(pa->pa_free < len);  in ext4_mb_use_inode_pa()
4696 	pa->pa_free -= len;  in ext4_mb_use_inode_pa()
4698 	mb_debug(ac->ac_sb, "use %llu/%d from inode pa %p\n", start, len, pa);  in ext4_mb_use_inode_pa()
4705 				struct ext4_prealloc_space *pa)  in ext4_mb_use_group_pa()  argument
4709 	ext4_get_group_no_and_offset(ac->ac_sb, pa->pa_pstart,  in ext4_mb_use_group_pa()
4714 	ac->ac_pa = pa;  in ext4_mb_use_group_pa()
4723 		 pa->pa_lstart, len, pa);  in ext4_mb_use_group_pa()
4734 			struct ext4_prealloc_space *pa,  in ext4_mb_check_group_pa()  argument
4740 		atomic_inc(&pa->pa_count);  in ext4_mb_check_group_pa()
4741 		return pa;  in ext4_mb_check_group_pa()
4744 	new_distance = abs(goal_block - pa->pa_pstart);  in ext4_mb_check_group_pa()
4751 	atomic_inc(&pa->pa_count);  in ext4_mb_check_group_pa()
4752 	return pa;  in ext4_mb_check_group_pa()
4760 		      struct ext4_prealloc_space *pa)  in ext4_mb_pa_goal_check()  argument
4774 	start = pa->pa_pstart +  in ext4_mb_pa_goal_check()
4775 		(ac->ac_g_ex.fe_logical - pa->pa_lstart);  in ext4_mb_pa_goal_check()
4779 	if (ac->ac_g_ex.fe_len > pa->pa_len -  in ext4_mb_pa_goal_check()
4780 	    EXT4_B2C(sbi, ac->ac_g_ex.fe_logical - pa->pa_lstart))  in ext4_mb_pa_goal_check()
4999 	struct ext4_prealloc_space *pa;  in ext4_mb_generate_from_pa()  local
5018 		pa = list_entry(cur, struct ext4_prealloc_space, pa_group_list);  in ext4_mb_generate_from_pa()
5019 		spin_lock(&pa->pa_lock);  in ext4_mb_generate_from_pa()
5020 		ext4_get_group_no_and_offset(sb, pa->pa_pstart,  in ext4_mb_generate_from_pa()
5022 		len = pa->pa_len;  in ext4_mb_generate_from_pa()
5023 		spin_unlock(&pa->pa_lock);  in ext4_mb_generate_from_pa()
5034 				    struct ext4_prealloc_space *pa)  in ext4_mb_mark_pa_deleted()  argument
5038 	if (pa->pa_deleted) {  in ext4_mb_mark_pa_deleted()
5040 			     pa->pa_type, pa->pa_pstart, pa->pa_lstart,  in ext4_mb_mark_pa_deleted()
5041 			     pa->pa_len);  in ext4_mb_mark_pa_deleted()
5045 	pa->pa_deleted = 1;  in ext4_mb_mark_pa_deleted()
5047 	if (pa->pa_type == MB_INODE_PA) {  in ext4_mb_mark_pa_deleted()
5048 		ei = EXT4_I(pa->pa_inode);  in ext4_mb_mark_pa_deleted()
5053 static inline void ext4_mb_pa_free(struct ext4_prealloc_space *pa)  in ext4_mb_pa_free()  argument
5055 	BUG_ON(!pa);  in ext4_mb_pa_free()
5056 	BUG_ON(atomic_read(&pa->pa_count));  in ext4_mb_pa_free()
5057 	BUG_ON(pa->pa_deleted == 0);  in ext4_mb_pa_free()
5058 	kmem_cache_free(ext4_pspace_cachep, pa);  in ext4_mb_pa_free()
5063 	struct ext4_prealloc_space *pa;  in ext4_mb_pa_callback()  local
5065 	pa = container_of(head, struct ext4_prealloc_space, u.pa_rcu);  in ext4_mb_pa_callback()
5066 	ext4_mb_pa_free(pa);  in ext4_mb_pa_callback()
5074 			struct super_block *sb, struct ext4_prealloc_space *pa)  in ext4_mb_put_pa()  argument
5081 	spin_lock(&pa->pa_lock);  in ext4_mb_put_pa()
5082 	if (!atomic_dec_and_test(&pa->pa_count) || pa->pa_free != 0) {  in ext4_mb_put_pa()
5083 		spin_unlock(&pa->pa_lock);  in ext4_mb_put_pa()
5087 	if (pa->pa_deleted == 1) {  in ext4_mb_put_pa()
5088 		spin_unlock(&pa->pa_lock);  in ext4_mb_put_pa()
5092 	ext4_mb_mark_pa_deleted(sb, pa);  in ext4_mb_put_pa()
5093 	spin_unlock(&pa->pa_lock);  in ext4_mb_put_pa()
5095 	grp_blk = pa->pa_pstart;  in ext4_mb_put_pa()
5100 	if (pa->pa_type == MB_GROUP_PA)  in ext4_mb_put_pa()
5120 	list_del(&pa->pa_group_list);  in ext4_mb_put_pa()
5123 	if (pa->pa_type == MB_INODE_PA) {  in ext4_mb_put_pa()
5124 		write_lock(pa->pa_node_lock.inode_lock);  in ext4_mb_put_pa()
5125 		rb_erase(&pa->pa_node.inode_node, &ei->i_prealloc_node);  in ext4_mb_put_pa()
5126 		write_unlock(pa->pa_node_lock.inode_lock);  in ext4_mb_put_pa()
5127 		ext4_mb_pa_free(pa);  in ext4_mb_put_pa()
5129 		spin_lock(pa->pa_node_lock.lg_lock);  in ext4_mb_put_pa()
5130 		list_del_rcu(&pa->pa_node.lg_list);  in ext4_mb_put_pa()
5131 		spin_unlock(pa->pa_node_lock.lg_lock);  in ext4_mb_put_pa()
5132 		call_rcu(&(pa)->u.pa_rcu, ext4_mb_pa_callback);  in ext4_mb_put_pa()
5169 	struct ext4_prealloc_space *pa;  in ext4_mb_new_inode_pa()  local
5179 	pa = ac->ac_pa;  in ext4_mb_new_inode_pa()
5224 	pa->pa_lstart = ac->ac_b_ex.fe_logical;  in ext4_mb_new_inode_pa()
5225 	pa->pa_pstart = ext4_grp_offs_to_block(sb, &ac->ac_b_ex);  in ext4_mb_new_inode_pa()
5226 	pa->pa_len = ac->ac_b_ex.fe_len;  in ext4_mb_new_inode_pa()
5227 	pa->pa_free = pa->pa_len;  in ext4_mb_new_inode_pa()
5228 	spin_lock_init(&pa->pa_lock);  in ext4_mb_new_inode_pa()
5229 	INIT_LIST_HEAD(&pa->pa_group_list);  in ext4_mb_new_inode_pa()
5230 	pa->pa_deleted = 0;  in ext4_mb_new_inode_pa()
5231 	pa->pa_type = MB_INODE_PA;  in ext4_mb_new_inode_pa()
5233 	mb_debug(sb, "new inode pa %p: %llu/%d for %u\n", pa, pa->pa_pstart,  in ext4_mb_new_inode_pa()
5234 		 pa->pa_len, pa->pa_lstart);  in ext4_mb_new_inode_pa()
5235 	trace_ext4_mb_new_inode_pa(ac, pa);  in ext4_mb_new_inode_pa()
5237 	atomic_add(pa->pa_free, &sbi->s_mb_preallocated);  in ext4_mb_new_inode_pa()
5238 	ext4_mb_use_inode_pa(ac, pa);  in ext4_mb_new_inode_pa()
5245 	pa->pa_node_lock.inode_lock = &ei->i_prealloc_lock;  in ext4_mb_new_inode_pa()
5246 	pa->pa_inode = ac->ac_inode;  in ext4_mb_new_inode_pa()
5248 	list_add(&pa->pa_group_list, &grp->bb_prealloc_list);  in ext4_mb_new_inode_pa()
5250 	write_lock(pa->pa_node_lock.inode_lock);  in ext4_mb_new_inode_pa()
5251 	ext4_mb_pa_rb_insert(&ei->i_prealloc_node, &pa->pa_node.inode_node);  in ext4_mb_new_inode_pa()
5252 	write_unlock(pa->pa_node_lock.inode_lock);  in ext4_mb_new_inode_pa()
5264 	struct ext4_prealloc_space *pa;  in ext4_mb_new_group_pa()  local
5273 	pa = ac->ac_pa;  in ext4_mb_new_group_pa()
5275 	pa->pa_pstart = ext4_grp_offs_to_block(sb, &ac->ac_b_ex);  in ext4_mb_new_group_pa()
5276 	pa->pa_lstart = pa->pa_pstart;  in ext4_mb_new_group_pa()
5277 	pa->pa_len = ac->ac_b_ex.fe_len;  in ext4_mb_new_group_pa()
5278 	pa->pa_free = pa->pa_len;  in ext4_mb_new_group_pa()
5279 	spin_lock_init(&pa->pa_lock);  in ext4_mb_new_group_pa()
5280 	INIT_LIST_HEAD(&pa->pa_node.lg_list);  in ext4_mb_new_group_pa()
5281 	INIT_LIST_HEAD(&pa->pa_group_list);  in ext4_mb_new_group_pa()
5282 	pa->pa_deleted = 0;  in ext4_mb_new_group_pa()
5283 	pa->pa_type = MB_GROUP_PA;  in ext4_mb_new_group_pa()
5285 	mb_debug(sb, "new group pa %p: %llu/%d for %u\n", pa, pa->pa_pstart,  in ext4_mb_new_group_pa()
5286 		 pa->pa_len, pa->pa_lstart);  in ext4_mb_new_group_pa()
5287 	trace_ext4_mb_new_group_pa(ac, pa);  in ext4_mb_new_group_pa()
5289 	ext4_mb_use_group_pa(ac, pa);  in ext4_mb_new_group_pa()
5290 	atomic_add(pa->pa_free, &EXT4_SB(sb)->s_mb_preallocated);  in ext4_mb_new_group_pa()
5298 	pa->pa_node_lock.lg_lock = &lg->lg_prealloc_lock;  in ext4_mb_new_group_pa()
5299 	pa->pa_inode = NULL;  in ext4_mb_new_group_pa()
5301 	list_add(&pa->pa_group_list, &grp->bb_prealloc_list);  in ext4_mb_new_group_pa()
5327 			struct ext4_prealloc_space *pa)  in ext4_mb_release_inode_pa()  argument
5338 	BUG_ON(pa->pa_deleted == 0);  in ext4_mb_release_inode_pa()
5339 	ext4_get_group_no_and_offset(sb, pa->pa_pstart, &group, &bit);  in ext4_mb_release_inode_pa()
5340 	grp_blk_start = pa->pa_pstart - EXT4_C2B(sbi, bit);  in ext4_mb_release_inode_pa()
5341 	BUG_ON(group != e4b->bd_group && pa->pa_len != 0);  in ext4_mb_release_inode_pa()
5342 	end = bit + pa->pa_len;  in ext4_mb_release_inode_pa()
5355 		trace_ext4_mb_release_inode_pa(pa, (grp_blk_start +  in ext4_mb_release_inode_pa()
5358 		mb_free_blocks(pa->pa_inode, e4b, bit, next - bit);  in ext4_mb_release_inode_pa()
5361 	if (free != pa->pa_free) {  in ext4_mb_release_inode_pa()
5364 			 pa, (unsigned long) pa->pa_lstart,  in ext4_mb_release_inode_pa()
5365 			 (unsigned long) pa->pa_pstart,  in ext4_mb_release_inode_pa()
5366 			 pa->pa_len);  in ext4_mb_release_inode_pa()
5368 					free, pa->pa_free);  in ext4_mb_release_inode_pa()
5381 				struct ext4_prealloc_space *pa)  in ext4_mb_release_group_pa()  argument
5387 	trace_ext4_mb_release_group_pa(sb, pa);  in ext4_mb_release_group_pa()
5388 	BUG_ON(pa->pa_deleted == 0);  in ext4_mb_release_group_pa()
5389 	ext4_get_group_no_and_offset(sb, pa->pa_pstart, &group, &bit);  in ext4_mb_release_group_pa()
5390 	if (unlikely(group != e4b->bd_group && pa->pa_len != 0)) {  in ext4_mb_release_group_pa()
5392 			     e4b->bd_group, group, pa->pa_pstart);  in ext4_mb_release_group_pa()
5395 	mb_free_blocks(pa->pa_inode, e4b, bit, pa->pa_len);  in ext4_mb_release_group_pa()
5396 	atomic_add(pa->pa_len, &EXT4_SB(sb)->s_mb_discarded);  in ext4_mb_release_group_pa()
5397 	trace_ext4_mballoc_discard(sb, NULL, group, bit, pa->pa_len);  in ext4_mb_release_group_pa()
5417 	struct ext4_prealloc_space *pa, *tmp;  in ext4_mb_discard_group_preallocations()  local
5448 	list_for_each_entry_safe(pa, tmp,  in ext4_mb_discard_group_preallocations()
5450 		spin_lock(&pa->pa_lock);  in ext4_mb_discard_group_preallocations()
5451 		if (atomic_read(&pa->pa_count)) {  in ext4_mb_discard_group_preallocations()
5452 			spin_unlock(&pa->pa_lock);  in ext4_mb_discard_group_preallocations()
5456 		if (pa->pa_deleted) {  in ext4_mb_discard_group_preallocations()
5457 			spin_unlock(&pa->pa_lock);  in ext4_mb_discard_group_preallocations()
5462 		ext4_mb_mark_pa_deleted(sb, pa);  in ext4_mb_discard_group_preallocations()
5468 		free += pa->pa_free;  in ext4_mb_discard_group_preallocations()
5470 		spin_unlock(&pa->pa_lock);  in ext4_mb_discard_group_preallocations()
5472 		list_del(&pa->pa_group_list);  in ext4_mb_discard_group_preallocations()
5473 		list_add(&pa->u.pa_tmp_list, &list);  in ext4_mb_discard_group_preallocations()
5477 	list_for_each_entry_safe(pa, tmp, &list, u.pa_tmp_list) {  in ext4_mb_discard_group_preallocations()
5480 		if (pa->pa_type == MB_GROUP_PA) {  in ext4_mb_discard_group_preallocations()
5481 			spin_lock(pa->pa_node_lock.lg_lock);  in ext4_mb_discard_group_preallocations()
5482 			list_del_rcu(&pa->pa_node.lg_list);  in ext4_mb_discard_group_preallocations()
5483 			spin_unlock(pa->pa_node_lock.lg_lock);  in ext4_mb_discard_group_preallocations()
5485 			write_lock(pa->pa_node_lock.inode_lock);  in ext4_mb_discard_group_preallocations()
5486 			ei = EXT4_I(pa->pa_inode);  in ext4_mb_discard_group_preallocations()
5487 			rb_erase(&pa->pa_node.inode_node, &ei->i_prealloc_node);  in ext4_mb_discard_group_preallocations()
5488 			write_unlock(pa->pa_node_lock.inode_lock);  in ext4_mb_discard_group_preallocations()
5491 		list_del(&pa->u.pa_tmp_list);  in ext4_mb_discard_group_preallocations()
5493 		if (pa->pa_type == MB_GROUP_PA) {  in ext4_mb_discard_group_preallocations()
5494 			ext4_mb_release_group_pa(&e4b, pa);  in ext4_mb_discard_group_preallocations()
5495 			call_rcu(&(pa)->u.pa_rcu, ext4_mb_pa_callback);  in ext4_mb_discard_group_preallocations()
5497 			ext4_mb_release_inode_pa(&e4b, bitmap_bh, pa);  in ext4_mb_discard_group_preallocations()
5498 			ext4_mb_pa_free(pa);  in ext4_mb_discard_group_preallocations()
5525 	struct ext4_prealloc_space *pa, *tmp;  in ext4_discard_preallocations()  local
5552 		pa = rb_entry(iter, struct ext4_prealloc_space,  in ext4_discard_preallocations()
5554 		BUG_ON(pa->pa_node_lock.inode_lock != &ei->i_prealloc_lock);  in ext4_discard_preallocations()
5556 		spin_lock(&pa->pa_lock);  in ext4_discard_preallocations()
5557 		if (atomic_read(&pa->pa_count)) {  in ext4_discard_preallocations()
5560 			spin_unlock(&pa->pa_lock);  in ext4_discard_preallocations()
5569 		if (pa->pa_deleted == 0) {  in ext4_discard_preallocations()
5570 			ext4_mb_mark_pa_deleted(sb, pa);  in ext4_discard_preallocations()
5571 			spin_unlock(&pa->pa_lock);  in ext4_discard_preallocations()
5572 			rb_erase(&pa->pa_node.inode_node, &ei->i_prealloc_node);  in ext4_discard_preallocations()
5573 			list_add(&pa->u.pa_tmp_list, &list);  in ext4_discard_preallocations()
5579 		spin_unlock(&pa->pa_lock);  in ext4_discard_preallocations()
5599 	list_for_each_entry_safe(pa, tmp, &list, u.pa_tmp_list) {  in ext4_discard_preallocations()
5600 		BUG_ON(pa->pa_type != MB_INODE_PA);  in ext4_discard_preallocations()
5601 		group = ext4_get_group_number(sb, pa->pa_pstart);  in ext4_discard_preallocations()
5621 		list_del(&pa->pa_group_list);  in ext4_discard_preallocations()
5622 		ext4_mb_release_inode_pa(&e4b, bitmap_bh, pa);  in ext4_discard_preallocations()
5628 		list_del(&pa->u.pa_tmp_list);  in ext4_discard_preallocations()
5629 		ext4_mb_pa_free(pa);  in ext4_discard_preallocations()
5635 	struct ext4_prealloc_space *pa;  in ext4_mb_pa_alloc()  local
5638 	pa = kmem_cache_zalloc(ext4_pspace_cachep, GFP_NOFS);  in ext4_mb_pa_alloc()
5639 	if (!pa)  in ext4_mb_pa_alloc()
5641 	atomic_set(&pa->pa_count, 1);  in ext4_mb_pa_alloc()
5642 	ac->ac_pa = pa;  in ext4_mb_pa_alloc()
5648 	struct ext4_prealloc_space *pa = ac->ac_pa;  in ext4_mb_pa_put_free()  local
5650 	BUG_ON(!pa);  in ext4_mb_pa_put_free()
5652 	WARN_ON(!atomic_dec_and_test(&pa->pa_count));  in ext4_mb_pa_put_free()
5658 	pa->pa_deleted = 1;  in ext4_mb_pa_put_free()
5659 	ext4_mb_pa_free(pa);  in ext4_mb_pa_put_free()
5674 		struct ext4_prealloc_space *pa;  in ext4_mb_show_pa()  local
5682 			pa = list_entry(cur, struct ext4_prealloc_space,  in ext4_mb_show_pa()
5684 			spin_lock(&pa->pa_lock);  in ext4_mb_show_pa()
5685 			ext4_get_group_no_and_offset(sb, pa->pa_pstart,  in ext4_mb_show_pa()
5687 			spin_unlock(&pa->pa_lock);  in ext4_mb_show_pa()
5689 				 pa->pa_len);  in ext4_mb_show_pa()
5860 	struct ext4_prealloc_space *pa, *tmp;  in ext4_mb_discard_lg_preallocations()  local
5865 	list_for_each_entry_rcu(pa, &lg->lg_prealloc_list[order],  in ext4_mb_discard_lg_preallocations()
5868 		spin_lock(&pa->pa_lock);  in ext4_mb_discard_lg_preallocations()
5869 		if (atomic_read(&pa->pa_count)) {  in ext4_mb_discard_lg_preallocations()
5875 			spin_unlock(&pa->pa_lock);  in ext4_mb_discard_lg_preallocations()
5878 		if (pa->pa_deleted) {  in ext4_mb_discard_lg_preallocations()
5879 			spin_unlock(&pa->pa_lock);  in ext4_mb_discard_lg_preallocations()
5883 		BUG_ON(pa->pa_type != MB_GROUP_PA);  in ext4_mb_discard_lg_preallocations()
5886 		ext4_mb_mark_pa_deleted(sb, pa);  in ext4_mb_discard_lg_preallocations()
5887 		spin_unlock(&pa->pa_lock);  in ext4_mb_discard_lg_preallocations()
5889 		list_del_rcu(&pa->pa_node.lg_list);  in ext4_mb_discard_lg_preallocations()
5890 		list_add(&pa->u.pa_tmp_list, &discard_list);  in ext4_mb_discard_lg_preallocations()
5905 	list_for_each_entry_safe(pa, tmp, &discard_list, u.pa_tmp_list) {  in ext4_mb_discard_lg_preallocations()
5908 		group = ext4_get_group_number(sb, pa->pa_pstart);  in ext4_mb_discard_lg_preallocations()
5917 		list_del(&pa->pa_group_list);  in ext4_mb_discard_lg_preallocations()
5918 		ext4_mb_release_group_pa(&e4b, pa);  in ext4_mb_discard_lg_preallocations()
5922 		list_del(&pa->u.pa_tmp_list);  in ext4_mb_discard_lg_preallocations()
5923 		call_rcu(&(pa)->u.pa_rcu, ext4_mb_pa_callback);  in ext4_mb_discard_lg_preallocations()
5941 	struct ext4_prealloc_space *tmp_pa, *pa = ac->ac_pa;  in ext4_mb_add_n_trim()  local
5943 	order = fls(pa->pa_free) - 1;  in ext4_mb_add_n_trim()
5957 		if (!added && pa->pa_free < tmp_pa->pa_free) {  in ext4_mb_add_n_trim()
5959 			list_add_tail_rcu(&pa->pa_node.lg_list,  in ext4_mb_add_n_trim()
5971 		list_add_tail_rcu(&pa->pa_node.lg_list,  in ext4_mb_add_n_trim()
5987 	struct ext4_prealloc_space *pa = ac->ac_pa;  in ext4_mb_release_context()  local
5988 	if (pa) {  in ext4_mb_release_context()
5989 		if (pa->pa_type == MB_GROUP_PA) {  in ext4_mb_release_context()
5991 			spin_lock(&pa->pa_lock);  in ext4_mb_release_context()
5992 			pa->pa_pstart += EXT4_C2B(sbi, ac->ac_b_ex.fe_len);  in ext4_mb_release_context()
5993 			pa->pa_lstart += EXT4_C2B(sbi, ac->ac_b_ex.fe_len);  in ext4_mb_release_context()
5994 			pa->pa_free -= ac->ac_b_ex.fe_len;  in ext4_mb_release_context()
5995 			pa->pa_len -= ac->ac_b_ex.fe_len;  in ext4_mb_release_context()
5996 			spin_unlock(&pa->pa_lock);  in ext4_mb_release_context()
6004 			if (likely(pa->pa_free)) {  in ext4_mb_release_context()
6005 				spin_lock(pa->pa_node_lock.lg_lock);  in ext4_mb_release_context()
6006 				list_del_rcu(&pa->pa_node.lg_list);  in ext4_mb_release_context()
6007 				spin_unlock(pa->pa_node_lock.lg_lock);  in ext4_mb_release_context()
6012 		ext4_mb_put_pa(ac, ac->ac_sb, pa);  in ext4_mb_release_context()