percpu_counter_sub
percpu_counter_sub(&cc->n_allocated_pages,
percpu_counter_sub(&cc->n_allocated_pages, 1);
percpu_counter_sub(&fs_info->dev_replace.bio_counter, amount);
percpu_counter_sub(&sbi->s_freeblocks_counter, num);
percpu_counter_sub(&sbi->s_dirtyclusters_counter, to_free);
percpu_counter_sub(&sbi->s_dirtyclusters_counter, used);
percpu_counter_sub(&sbi->s_freeclusters_counter, ac->ac_b_ex.fe_len);
percpu_counter_sub(&sbi->s_dirtyclusters_counter, reserv_clstrs);
percpu_counter_sub(&sbi->s_freeclusters_counter,
percpu_counter_sub(&sbi->s_freeinodes_counter,
percpu_counter_sub(&sbi->alloc_valid_block_count, release);
percpu_counter_sub(&sbi->alloc_valid_block_count, release);
percpu_counter_sub(&nn->counter[NFSD_STATS_DRC_MEM_USAGE], amount);
percpu_counter_sub(&ksmbd_counters.counters[type], value);
percpu_counter_sub(&tctx->inflight, 1);
percpu_counter_sub(&tctx->inflight, refs);
percpu_counter_sub(&sbinfo->used_blocks, pages);
percpu_counter_sub(&sbinfo->used_blocks, pages);