Lines Matching refs:wb
63 struct bdi_writeback *wb) in collect_wb_stats() argument
67 spin_lock(&wb->list_lock); in collect_wb_stats()
68 list_for_each_entry(inode, &wb->b_dirty, i_io_list) in collect_wb_stats()
70 list_for_each_entry(inode, &wb->b_io, i_io_list) in collect_wb_stats()
72 list_for_each_entry(inode, &wb->b_more_io, i_io_list) in collect_wb_stats()
74 list_for_each_entry(inode, &wb->b_dirty_time, i_io_list) in collect_wb_stats()
77 spin_unlock(&wb->list_lock); in collect_wb_stats()
79 stats->nr_writeback += wb_stat(wb, WB_WRITEBACK); in collect_wb_stats()
80 stats->nr_reclaimable += wb_stat(wb, WB_RECLAIMABLE); in collect_wb_stats()
81 stats->nr_dirtied += wb_stat(wb, WB_DIRTIED); in collect_wb_stats()
82 stats->nr_written += wb_stat(wb, WB_WRITTEN); in collect_wb_stats()
83 stats->wb_thresh += wb_calc_thresh(wb, stats->dirty_thresh); in collect_wb_stats()
90 struct bdi_writeback *wb; in bdi_collect_stats() local
93 list_for_each_entry_rcu(wb, &bdi->wb_list, bdi_node) { in bdi_collect_stats()
94 if (!wb_tryget(wb)) in bdi_collect_stats()
97 collect_wb_stats(stats, wb); in bdi_collect_stats()
98 wb_put(wb); in bdi_collect_stats()
106 collect_wb_stats(stats, &bdi->wb); in bdi_collect_stats()
152 !list_empty(&bdi->bdi_list), bdi->wb.state); in bdi_debug_stats_show()
158 static void wb_stats_show(struct seq_file *m, struct bdi_writeback *wb, in wb_stats_show() argument
176 cgroup_ino(wb->memcg_css->cgroup), in wb_stats_show()
185 K(wb->avg_write_bandwidth), in wb_stats_show()
190 wb->state); in wb_stats_show()
198 struct bdi_writeback *wb; in cgwb_debug_stats_show() local
203 list_for_each_entry_rcu(wb, &bdi->wb_list, bdi_node) { in cgwb_debug_stats_show()
206 if (!wb_tryget(wb)) in cgwb_debug_stats_show()
209 collect_wb_stats(&stats, wb); in cgwb_debug_stats_show()
217 if (mem_cgroup_wb_domain(wb)) { in cgwb_debug_stats_show()
219 stats.wb_thresh = min(stats.wb_thresh, cgwb_calc_thresh(wb)); in cgwb_debug_stats_show()
223 wb_stats_show(m, wb, &stats); in cgwb_debug_stats_show()
225 wb_put(wb); in cgwb_debug_stats_show()
504 struct bdi_writeback *wb = container_of(to_delayed_work(work), in wb_update_bandwidth_workfn() local
507 wb_update_bandwidth(wb); in wb_update_bandwidth_workfn()
515 static int wb_init(struct bdi_writeback *wb, struct backing_dev_info *bdi, in wb_init() argument
520 memset(wb, 0, sizeof(*wb)); in wb_init()
522 wb->bdi = bdi; in wb_init()
523 wb->last_old_flush = jiffies; in wb_init()
524 INIT_LIST_HEAD(&wb->b_dirty); in wb_init()
525 INIT_LIST_HEAD(&wb->b_io); in wb_init()
526 INIT_LIST_HEAD(&wb->b_more_io); in wb_init()
527 INIT_LIST_HEAD(&wb->b_dirty_time); in wb_init()
528 spin_lock_init(&wb->list_lock); in wb_init()
530 atomic_set(&wb->writeback_inodes, 0); in wb_init()
531 wb->bw_time_stamp = jiffies; in wb_init()
532 wb->balanced_dirty_ratelimit = INIT_BW; in wb_init()
533 wb->dirty_ratelimit = INIT_BW; in wb_init()
534 wb->write_bandwidth = INIT_BW; in wb_init()
535 wb->avg_write_bandwidth = INIT_BW; in wb_init()
537 spin_lock_init(&wb->work_lock); in wb_init()
538 INIT_LIST_HEAD(&wb->work_list); in wb_init()
539 INIT_DELAYED_WORK(&wb->dwork, wb_workfn); in wb_init()
540 INIT_DELAYED_WORK(&wb->bw_dwork, wb_update_bandwidth_workfn); in wb_init()
542 err = fprop_local_init_percpu(&wb->completions, gfp); in wb_init()
546 err = percpu_counter_init_many(wb->stat, 0, gfp, NR_WB_STAT_ITEMS); in wb_init()
548 fprop_local_destroy_percpu(&wb->completions); in wb_init()
553 static void cgwb_remove_from_bdi_list(struct bdi_writeback *wb);
558 static void wb_shutdown(struct bdi_writeback *wb) in wb_shutdown() argument
561 spin_lock_irq(&wb->work_lock); in wb_shutdown()
562 if (!test_and_clear_bit(WB_registered, &wb->state)) { in wb_shutdown()
563 spin_unlock_irq(&wb->work_lock); in wb_shutdown()
566 spin_unlock_irq(&wb->work_lock); in wb_shutdown()
568 cgwb_remove_from_bdi_list(wb); in wb_shutdown()
574 mod_delayed_work(bdi_wq, &wb->dwork, 0); in wb_shutdown()
575 flush_delayed_work(&wb->dwork); in wb_shutdown()
576 WARN_ON(!list_empty(&wb->work_list)); in wb_shutdown()
577 flush_delayed_work(&wb->bw_dwork); in wb_shutdown()
580 static void wb_exit(struct bdi_writeback *wb) in wb_exit() argument
582 WARN_ON(delayed_work_pending(&wb->dwork)); in wb_exit()
583 percpu_counter_destroy_many(wb->stat, NR_WB_STAT_ITEMS); in wb_exit()
584 fprop_local_destroy_percpu(&wb->completions); in wb_exit()
604 struct bdi_writeback *wb = container_of(rcu_head, in cgwb_free_rcu() local
607 percpu_ref_exit(&wb->refcnt); in cgwb_free_rcu()
608 kfree(wb); in cgwb_free_rcu()
613 struct bdi_writeback *wb = container_of(work, struct bdi_writeback, in cgwb_release_workfn() local
615 struct backing_dev_info *bdi = wb->bdi; in cgwb_release_workfn()
617 mutex_lock(&wb->bdi->cgwb_release_mutex); in cgwb_release_workfn()
618 wb_shutdown(wb); in cgwb_release_workfn()
620 css_put(wb->memcg_css); in cgwb_release_workfn()
621 css_put(wb->blkcg_css); in cgwb_release_workfn()
622 mutex_unlock(&wb->bdi->cgwb_release_mutex); in cgwb_release_workfn()
625 blkcg_unpin_online(wb->blkcg_css); in cgwb_release_workfn()
627 fprop_local_destroy_percpu(&wb->memcg_completions); in cgwb_release_workfn()
630 list_del(&wb->offline_node); in cgwb_release_workfn()
633 wb_exit(wb); in cgwb_release_workfn()
635 WARN_ON_ONCE(!list_empty(&wb->b_attached)); in cgwb_release_workfn()
636 call_rcu(&wb->rcu, cgwb_free_rcu); in cgwb_release_workfn()
641 struct bdi_writeback *wb = container_of(refcnt, struct bdi_writeback, in cgwb_release() local
643 queue_work(cgwb_release_wq, &wb->release_work); in cgwb_release()
646 static void cgwb_kill(struct bdi_writeback *wb) in cgwb_kill() argument
650 WARN_ON(!radix_tree_delete(&wb->bdi->cgwb_tree, wb->memcg_css->id)); in cgwb_kill()
651 list_del(&wb->memcg_node); in cgwb_kill()
652 list_del(&wb->blkcg_node); in cgwb_kill()
653 list_add(&wb->offline_node, &offline_cgwbs); in cgwb_kill()
654 percpu_ref_kill(&wb->refcnt); in cgwb_kill()
657 static void cgwb_remove_from_bdi_list(struct bdi_writeback *wb) in cgwb_remove_from_bdi_list() argument
660 list_del_rcu(&wb->bdi_node); in cgwb_remove_from_bdi_list()
670 struct bdi_writeback *wb; in cgwb_create() local
681 wb = radix_tree_lookup(&bdi->cgwb_tree, memcg_css->id); in cgwb_create()
682 if (wb && wb->blkcg_css != blkcg_css) { in cgwb_create()
683 cgwb_kill(wb); in cgwb_create()
684 wb = NULL; in cgwb_create()
687 if (wb) in cgwb_create()
691 wb = kmalloc(sizeof(*wb), gfp); in cgwb_create()
692 if (!wb) { in cgwb_create()
697 ret = wb_init(wb, bdi, gfp); in cgwb_create()
701 ret = percpu_ref_init(&wb->refcnt, cgwb_release, 0, gfp); in cgwb_create()
705 ret = fprop_local_init_percpu(&wb->memcg_completions, gfp); in cgwb_create()
709 wb->memcg_css = memcg_css; in cgwb_create()
710 wb->blkcg_css = blkcg_css; in cgwb_create()
711 INIT_LIST_HEAD(&wb->b_attached); in cgwb_create()
712 INIT_WORK(&wb->release_work, cgwb_release_workfn); in cgwb_create()
713 set_bit(WB_registered, &wb->state); in cgwb_create()
724 if (test_bit(WB_registered, &bdi->wb.state) && in cgwb_create()
727 ret = radix_tree_insert(&bdi->cgwb_tree, memcg_css->id, wb); in cgwb_create()
729 list_add_tail_rcu(&wb->bdi_node, &bdi->wb_list); in cgwb_create()
730 list_add(&wb->memcg_node, memcg_cgwb_list); in cgwb_create()
731 list_add(&wb->blkcg_node, blkcg_cgwb_list); in cgwb_create()
747 fprop_local_destroy_percpu(&wb->memcg_completions); in cgwb_create()
749 percpu_ref_exit(&wb->refcnt); in cgwb_create()
751 wb_exit(wb); in cgwb_create()
753 kfree(wb); in cgwb_create()
785 struct bdi_writeback *wb; in wb_get_lookup() local
788 return &bdi->wb; in wb_get_lookup()
791 wb = radix_tree_lookup(&bdi->cgwb_tree, memcg_css->id); in wb_get_lookup()
792 if (wb) { in wb_get_lookup()
797 if (unlikely(wb->blkcg_css != blkcg_css || !wb_tryget(wb))) in wb_get_lookup()
798 wb = NULL; in wb_get_lookup()
803 return wb; in wb_get_lookup()
819 struct bdi_writeback *wb; in wb_get_create() local
824 wb = wb_get_lookup(bdi, memcg_css); in wb_get_create()
825 } while (!wb && !cgwb_create(bdi, memcg_css, gfp)); in wb_get_create()
827 return wb; in wb_get_create()
838 ret = wb_init(&bdi->wb, bdi, GFP_KERNEL); in cgwb_bdi_init()
840 bdi->wb.memcg_css = &root_mem_cgroup->css; in cgwb_bdi_init()
841 bdi->wb.blkcg_css = blkcg_root_css; in cgwb_bdi_init()
850 struct bdi_writeback *wb; in cgwb_bdi_unregister() local
852 WARN_ON(test_bit(WB_registered, &bdi->wb.state)); in cgwb_bdi_unregister()
862 wb = list_first_entry(&bdi->wb_list, struct bdi_writeback, in cgwb_bdi_unregister()
865 wb_shutdown(wb); in cgwb_bdi_unregister()
881 struct bdi_writeback *wb; in cleanup_offline_cgwbs_workfn() local
887 wb = list_first_entry(&offline_cgwbs, struct bdi_writeback, in cleanup_offline_cgwbs_workfn()
889 list_move(&wb->offline_node, &processed); in cleanup_offline_cgwbs_workfn()
900 if (wb_has_dirty_io(wb)) in cleanup_offline_cgwbs_workfn()
903 if (!wb_tryget(wb)) in cleanup_offline_cgwbs_workfn()
907 while (cleanup_offline_cgwb(wb)) in cleanup_offline_cgwbs_workfn()
911 wb_put(wb); in cleanup_offline_cgwbs_workfn()
929 struct bdi_writeback *wb, *next; in wb_memcg_offline() local
932 list_for_each_entry_safe(wb, next, memcg_cgwb_list, memcg_node) in wb_memcg_offline()
933 cgwb_kill(wb); in wb_memcg_offline()
948 struct bdi_writeback *wb, *next; in wb_blkcg_offline() local
952 list_for_each_entry_safe(wb, next, list, blkcg_node) in wb_blkcg_offline()
953 cgwb_kill(wb); in wb_blkcg_offline()
961 list_add_tail_rcu(&bdi->wb.bdi_node, &bdi->wb_list); in cgwb_bdi_register()
984 return wb_init(&bdi->wb, bdi, GFP_KERNEL); in cgwb_bdi_init()
991 list_add_tail_rcu(&bdi->wb.bdi_node, &bdi->wb_list); in cgwb_bdi_register()
994 static void cgwb_remove_from_bdi_list(struct bdi_writeback *wb) in cgwb_remove_from_bdi_list() argument
996 list_del_rcu(&wb->bdi_node); in cgwb_remove_from_bdi_list()
1102 set_bit(WB_registered, &bdi->wb.state); in bdi_register_va()
1158 wb_shutdown(&bdi->wb); in bdi_unregister()
1186 WARN_ON_ONCE(test_bit(WB_registered, &bdi->wb.state)); in release_bdi()
1188 wb_exit(&bdi->wb); in release_bdi()