Lines Matching refs:wb
52 struct bdi_writeback *wb = &bdi->wb; in bdi_debug_stats_show() local
60 spin_lock(&wb->list_lock); in bdi_debug_stats_show()
61 list_for_each_entry(inode, &wb->b_dirty, i_io_list) in bdi_debug_stats_show()
63 list_for_each_entry(inode, &wb->b_io, i_io_list) in bdi_debug_stats_show()
65 list_for_each_entry(inode, &wb->b_more_io, i_io_list) in bdi_debug_stats_show()
67 list_for_each_entry(inode, &wb->b_dirty_time, i_io_list) in bdi_debug_stats_show()
70 spin_unlock(&wb->list_lock); in bdi_debug_stats_show()
73 wb_thresh = wb_calc_thresh(wb, dirty_thresh); in bdi_debug_stats_show()
90 (unsigned long) K(wb_stat(wb, WB_WRITEBACK)), in bdi_debug_stats_show()
91 (unsigned long) K(wb_stat(wb, WB_RECLAIMABLE)), in bdi_debug_stats_show()
95 (unsigned long) K(wb_stat(wb, WB_DIRTIED)), in bdi_debug_stats_show()
96 (unsigned long) K(wb_stat(wb, WB_WRITTEN)), in bdi_debug_stats_show()
97 (unsigned long) K(wb->write_bandwidth), in bdi_debug_stats_show()
102 !list_empty(&bdi->bdi_list), bdi->wb.state); in bdi_debug_stats_show()
389 void wb_wakeup_delayed(struct bdi_writeback *wb) in wb_wakeup_delayed() argument
394 spin_lock_irq(&wb->work_lock); in wb_wakeup_delayed()
395 if (test_bit(WB_registered, &wb->state)) in wb_wakeup_delayed()
396 queue_delayed_work(bdi_wq, &wb->dwork, timeout); in wb_wakeup_delayed()
397 spin_unlock_irq(&wb->work_lock); in wb_wakeup_delayed()
402 struct bdi_writeback *wb = container_of(to_delayed_work(work), in wb_update_bandwidth_workfn() local
405 wb_update_bandwidth(wb); in wb_update_bandwidth_workfn()
413 static int wb_init(struct bdi_writeback *wb, struct backing_dev_info *bdi, in wb_init() argument
418 memset(wb, 0, sizeof(*wb)); in wb_init()
420 wb->bdi = bdi; in wb_init()
421 wb->last_old_flush = jiffies; in wb_init()
422 INIT_LIST_HEAD(&wb->b_dirty); in wb_init()
423 INIT_LIST_HEAD(&wb->b_io); in wb_init()
424 INIT_LIST_HEAD(&wb->b_more_io); in wb_init()
425 INIT_LIST_HEAD(&wb->b_dirty_time); in wb_init()
426 spin_lock_init(&wb->list_lock); in wb_init()
428 atomic_set(&wb->writeback_inodes, 0); in wb_init()
429 wb->bw_time_stamp = jiffies; in wb_init()
430 wb->balanced_dirty_ratelimit = INIT_BW; in wb_init()
431 wb->dirty_ratelimit = INIT_BW; in wb_init()
432 wb->write_bandwidth = INIT_BW; in wb_init()
433 wb->avg_write_bandwidth = INIT_BW; in wb_init()
435 spin_lock_init(&wb->work_lock); in wb_init()
436 INIT_LIST_HEAD(&wb->work_list); in wb_init()
437 INIT_DELAYED_WORK(&wb->dwork, wb_workfn); in wb_init()
438 INIT_DELAYED_WORK(&wb->bw_dwork, wb_update_bandwidth_workfn); in wb_init()
439 wb->dirty_sleep = jiffies; in wb_init()
441 err = fprop_local_init_percpu(&wb->completions, gfp); in wb_init()
446 err = percpu_counter_init(&wb->stat[i], 0, gfp); in wb_init()
455 percpu_counter_destroy(&wb->stat[i]); in wb_init()
456 fprop_local_destroy_percpu(&wb->completions); in wb_init()
460 static void cgwb_remove_from_bdi_list(struct bdi_writeback *wb);
465 static void wb_shutdown(struct bdi_writeback *wb) in wb_shutdown() argument
468 spin_lock_irq(&wb->work_lock); in wb_shutdown()
469 if (!test_and_clear_bit(WB_registered, &wb->state)) { in wb_shutdown()
470 spin_unlock_irq(&wb->work_lock); in wb_shutdown()
473 spin_unlock_irq(&wb->work_lock); in wb_shutdown()
475 cgwb_remove_from_bdi_list(wb); in wb_shutdown()
481 mod_delayed_work(bdi_wq, &wb->dwork, 0); in wb_shutdown()
482 flush_delayed_work(&wb->dwork); in wb_shutdown()
483 WARN_ON(!list_empty(&wb->work_list)); in wb_shutdown()
484 flush_delayed_work(&wb->bw_dwork); in wb_shutdown()
487 static void wb_exit(struct bdi_writeback *wb) in wb_exit() argument
491 WARN_ON(delayed_work_pending(&wb->dwork)); in wb_exit()
494 percpu_counter_destroy(&wb->stat[i]); in wb_exit()
496 fprop_local_destroy_percpu(&wb->completions); in wb_exit()
516 struct bdi_writeback *wb = container_of(rcu_head, in cgwb_free_rcu() local
519 percpu_ref_exit(&wb->refcnt); in cgwb_free_rcu()
520 kfree(wb); in cgwb_free_rcu()
525 struct bdi_writeback *wb = container_of(work, struct bdi_writeback, in cgwb_release_workfn() local
527 struct backing_dev_info *bdi = wb->bdi; in cgwb_release_workfn()
529 mutex_lock(&wb->bdi->cgwb_release_mutex); in cgwb_release_workfn()
530 wb_shutdown(wb); in cgwb_release_workfn()
532 css_put(wb->memcg_css); in cgwb_release_workfn()
533 css_put(wb->blkcg_css); in cgwb_release_workfn()
534 mutex_unlock(&wb->bdi->cgwb_release_mutex); in cgwb_release_workfn()
537 blkcg_unpin_online(wb->blkcg_css); in cgwb_release_workfn()
539 fprop_local_destroy_percpu(&wb->memcg_completions); in cgwb_release_workfn()
542 list_del(&wb->offline_node); in cgwb_release_workfn()
545 wb_exit(wb); in cgwb_release_workfn()
547 WARN_ON_ONCE(!list_empty(&wb->b_attached)); in cgwb_release_workfn()
548 call_rcu(&wb->rcu, cgwb_free_rcu); in cgwb_release_workfn()
553 struct bdi_writeback *wb = container_of(refcnt, struct bdi_writeback, in cgwb_release() local
555 queue_work(cgwb_release_wq, &wb->release_work); in cgwb_release()
558 static void cgwb_kill(struct bdi_writeback *wb) in cgwb_kill() argument
562 WARN_ON(!radix_tree_delete(&wb->bdi->cgwb_tree, wb->memcg_css->id)); in cgwb_kill()
563 list_del(&wb->memcg_node); in cgwb_kill()
564 list_del(&wb->blkcg_node); in cgwb_kill()
565 list_add(&wb->offline_node, &offline_cgwbs); in cgwb_kill()
566 percpu_ref_kill(&wb->refcnt); in cgwb_kill()
569 static void cgwb_remove_from_bdi_list(struct bdi_writeback *wb) in cgwb_remove_from_bdi_list() argument
572 list_del_rcu(&wb->bdi_node); in cgwb_remove_from_bdi_list()
582 struct bdi_writeback *wb; in cgwb_create() local
593 wb = radix_tree_lookup(&bdi->cgwb_tree, memcg_css->id); in cgwb_create()
594 if (wb && wb->blkcg_css != blkcg_css) { in cgwb_create()
595 cgwb_kill(wb); in cgwb_create()
596 wb = NULL; in cgwb_create()
599 if (wb) in cgwb_create()
603 wb = kmalloc(sizeof(*wb), gfp); in cgwb_create()
604 if (!wb) { in cgwb_create()
609 ret = wb_init(wb, bdi, gfp); in cgwb_create()
613 ret = percpu_ref_init(&wb->refcnt, cgwb_release, 0, gfp); in cgwb_create()
617 ret = fprop_local_init_percpu(&wb->memcg_completions, gfp); in cgwb_create()
621 wb->memcg_css = memcg_css; in cgwb_create()
622 wb->blkcg_css = blkcg_css; in cgwb_create()
623 INIT_LIST_HEAD(&wb->b_attached); in cgwb_create()
624 INIT_WORK(&wb->release_work, cgwb_release_workfn); in cgwb_create()
625 set_bit(WB_registered, &wb->state); in cgwb_create()
636 if (test_bit(WB_registered, &bdi->wb.state) && in cgwb_create()
639 ret = radix_tree_insert(&bdi->cgwb_tree, memcg_css->id, wb); in cgwb_create()
641 list_add_tail_rcu(&wb->bdi_node, &bdi->wb_list); in cgwb_create()
642 list_add(&wb->memcg_node, memcg_cgwb_list); in cgwb_create()
643 list_add(&wb->blkcg_node, blkcg_cgwb_list); in cgwb_create()
659 fprop_local_destroy_percpu(&wb->memcg_completions); in cgwb_create()
661 percpu_ref_exit(&wb->refcnt); in cgwb_create()
663 wb_exit(wb); in cgwb_create()
665 kfree(wb); in cgwb_create()
697 struct bdi_writeback *wb; in wb_get_lookup() local
700 return &bdi->wb; in wb_get_lookup()
703 wb = radix_tree_lookup(&bdi->cgwb_tree, memcg_css->id); in wb_get_lookup()
704 if (wb) { in wb_get_lookup()
709 if (unlikely(wb->blkcg_css != blkcg_css || !wb_tryget(wb))) in wb_get_lookup()
710 wb = NULL; in wb_get_lookup()
715 return wb; in wb_get_lookup()
731 struct bdi_writeback *wb; in wb_get_create() local
736 wb = wb_get_lookup(bdi, memcg_css); in wb_get_create()
737 } while (!wb && !cgwb_create(bdi, memcg_css, gfp)); in wb_get_create()
739 return wb; in wb_get_create()
750 ret = wb_init(&bdi->wb, bdi, GFP_KERNEL); in cgwb_bdi_init()
752 bdi->wb.memcg_css = &root_mem_cgroup->css; in cgwb_bdi_init()
753 bdi->wb.blkcg_css = blkcg_root_css; in cgwb_bdi_init()
762 struct bdi_writeback *wb; in cgwb_bdi_unregister() local
764 WARN_ON(test_bit(WB_registered, &bdi->wb.state)); in cgwb_bdi_unregister()
774 wb = list_first_entry(&bdi->wb_list, struct bdi_writeback, in cgwb_bdi_unregister()
777 wb_shutdown(wb); in cgwb_bdi_unregister()
793 struct bdi_writeback *wb; in cleanup_offline_cgwbs_workfn() local
799 wb = list_first_entry(&offline_cgwbs, struct bdi_writeback, in cleanup_offline_cgwbs_workfn()
801 list_move(&wb->offline_node, &processed); in cleanup_offline_cgwbs_workfn()
812 if (wb_has_dirty_io(wb)) in cleanup_offline_cgwbs_workfn()
815 if (!wb_tryget(wb)) in cleanup_offline_cgwbs_workfn()
819 while (cleanup_offline_cgwb(wb)) in cleanup_offline_cgwbs_workfn()
823 wb_put(wb); in cleanup_offline_cgwbs_workfn()
841 struct bdi_writeback *wb, *next; in wb_memcg_offline() local
844 list_for_each_entry_safe(wb, next, memcg_cgwb_list, memcg_node) in wb_memcg_offline()
845 cgwb_kill(wb); in wb_memcg_offline()
860 struct bdi_writeback *wb, *next; in wb_blkcg_offline() local
864 list_for_each_entry_safe(wb, next, list, blkcg_node) in wb_blkcg_offline()
865 cgwb_kill(wb); in wb_blkcg_offline()
873 list_add_tail_rcu(&bdi->wb.bdi_node, &bdi->wb_list); in cgwb_bdi_register()
896 return wb_init(&bdi->wb, bdi, GFP_KERNEL); in cgwb_bdi_init()
903 list_add_tail_rcu(&bdi->wb.bdi_node, &bdi->wb_list); in cgwb_bdi_register()
906 static void cgwb_remove_from_bdi_list(struct bdi_writeback *wb) in cgwb_remove_from_bdi_list() argument
908 list_del_rcu(&wb->bdi_node); in cgwb_remove_from_bdi_list()
1013 set_bit(WB_registered, &bdi->wb.state); in bdi_register_va()
1069 wb_shutdown(&bdi->wb); in bdi_unregister()
1097 WARN_ON_ONCE(test_bit(WB_registered, &bdi->wb.state)); in release_bdi()
1099 wb_exit(&bdi->wb); in release_bdi()