Lines Matching refs:wb
54 struct bdi_writeback *wb = &bdi->wb; in bdi_debug_stats_show() local
62 spin_lock(&wb->list_lock); in bdi_debug_stats_show()
63 list_for_each_entry(inode, &wb->b_dirty, i_io_list) in bdi_debug_stats_show()
65 list_for_each_entry(inode, &wb->b_io, i_io_list) in bdi_debug_stats_show()
67 list_for_each_entry(inode, &wb->b_more_io, i_io_list) in bdi_debug_stats_show()
69 list_for_each_entry(inode, &wb->b_dirty_time, i_io_list) in bdi_debug_stats_show()
72 spin_unlock(&wb->list_lock); in bdi_debug_stats_show()
75 wb_thresh = wb_calc_thresh(wb, dirty_thresh); in bdi_debug_stats_show()
92 (unsigned long) K(wb_stat(wb, WB_WRITEBACK)), in bdi_debug_stats_show()
93 (unsigned long) K(wb_stat(wb, WB_RECLAIMABLE)), in bdi_debug_stats_show()
97 (unsigned long) K(wb_stat(wb, WB_DIRTIED)), in bdi_debug_stats_show()
98 (unsigned long) K(wb_stat(wb, WB_WRITTEN)), in bdi_debug_stats_show()
99 (unsigned long) K(wb->write_bandwidth), in bdi_debug_stats_show()
104 !list_empty(&bdi->bdi_list), bdi->wb.state); in bdi_debug_stats_show()
385 void wb_wakeup_delayed(struct bdi_writeback *wb) in wb_wakeup_delayed() argument
390 spin_lock_irq(&wb->work_lock); in wb_wakeup_delayed()
391 if (test_bit(WB_registered, &wb->state)) in wb_wakeup_delayed()
392 queue_delayed_work(bdi_wq, &wb->dwork, timeout); in wb_wakeup_delayed()
393 spin_unlock_irq(&wb->work_lock); in wb_wakeup_delayed()
398 struct bdi_writeback *wb = container_of(to_delayed_work(work), in wb_update_bandwidth_workfn() local
401 wb_update_bandwidth(wb); in wb_update_bandwidth_workfn()
409 static int wb_init(struct bdi_writeback *wb, struct backing_dev_info *bdi, in wb_init() argument
414 memset(wb, 0, sizeof(*wb)); in wb_init()
416 wb->bdi = bdi; in wb_init()
417 wb->last_old_flush = jiffies; in wb_init()
418 INIT_LIST_HEAD(&wb->b_dirty); in wb_init()
419 INIT_LIST_HEAD(&wb->b_io); in wb_init()
420 INIT_LIST_HEAD(&wb->b_more_io); in wb_init()
421 INIT_LIST_HEAD(&wb->b_dirty_time); in wb_init()
422 spin_lock_init(&wb->list_lock); in wb_init()
424 atomic_set(&wb->writeback_inodes, 0); in wb_init()
425 wb->bw_time_stamp = jiffies; in wb_init()
426 wb->balanced_dirty_ratelimit = INIT_BW; in wb_init()
427 wb->dirty_ratelimit = INIT_BW; in wb_init()
428 wb->write_bandwidth = INIT_BW; in wb_init()
429 wb->avg_write_bandwidth = INIT_BW; in wb_init()
431 spin_lock_init(&wb->work_lock); in wb_init()
432 INIT_LIST_HEAD(&wb->work_list); in wb_init()
433 INIT_DELAYED_WORK(&wb->dwork, wb_workfn); in wb_init()
434 INIT_DELAYED_WORK(&wb->bw_dwork, wb_update_bandwidth_workfn); in wb_init()
435 wb->dirty_sleep = jiffies; in wb_init()
437 err = fprop_local_init_percpu(&wb->completions, gfp); in wb_init()
442 err = percpu_counter_init(&wb->stat[i], 0, gfp); in wb_init()
451 percpu_counter_destroy(&wb->stat[i]); in wb_init()
452 fprop_local_destroy_percpu(&wb->completions); in wb_init()
456 static void cgwb_remove_from_bdi_list(struct bdi_writeback *wb);
461 static void wb_shutdown(struct bdi_writeback *wb) in wb_shutdown() argument
464 spin_lock_irq(&wb->work_lock); in wb_shutdown()
465 if (!test_and_clear_bit(WB_registered, &wb->state)) { in wb_shutdown()
466 spin_unlock_irq(&wb->work_lock); in wb_shutdown()
469 spin_unlock_irq(&wb->work_lock); in wb_shutdown()
471 cgwb_remove_from_bdi_list(wb); in wb_shutdown()
477 mod_delayed_work(bdi_wq, &wb->dwork, 0); in wb_shutdown()
478 flush_delayed_work(&wb->dwork); in wb_shutdown()
479 WARN_ON(!list_empty(&wb->work_list)); in wb_shutdown()
480 flush_delayed_work(&wb->bw_dwork); in wb_shutdown()
483 static void wb_exit(struct bdi_writeback *wb) in wb_exit() argument
487 WARN_ON(delayed_work_pending(&wb->dwork)); in wb_exit()
490 percpu_counter_destroy(&wb->stat[i]); in wb_exit()
492 fprop_local_destroy_percpu(&wb->completions); in wb_exit()
512 struct bdi_writeback *wb = container_of(work, struct bdi_writeback, in cgwb_release_workfn() local
514 struct backing_dev_info *bdi = wb->bdi; in cgwb_release_workfn()
516 mutex_lock(&wb->bdi->cgwb_release_mutex); in cgwb_release_workfn()
517 wb_shutdown(wb); in cgwb_release_workfn()
519 css_put(wb->memcg_css); in cgwb_release_workfn()
520 css_put(wb->blkcg_css); in cgwb_release_workfn()
521 mutex_unlock(&wb->bdi->cgwb_release_mutex); in cgwb_release_workfn()
524 blkcg_unpin_online(wb->blkcg_css); in cgwb_release_workfn()
526 fprop_local_destroy_percpu(&wb->memcg_completions); in cgwb_release_workfn()
529 list_del(&wb->offline_node); in cgwb_release_workfn()
532 percpu_ref_exit(&wb->refcnt); in cgwb_release_workfn()
533 wb_exit(wb); in cgwb_release_workfn()
535 WARN_ON_ONCE(!list_empty(&wb->b_attached)); in cgwb_release_workfn()
536 kfree_rcu(wb, rcu); in cgwb_release_workfn()
541 struct bdi_writeback *wb = container_of(refcnt, struct bdi_writeback, in cgwb_release() local
543 queue_work(cgwb_release_wq, &wb->release_work); in cgwb_release()
546 static void cgwb_kill(struct bdi_writeback *wb) in cgwb_kill() argument
550 WARN_ON(!radix_tree_delete(&wb->bdi->cgwb_tree, wb->memcg_css->id)); in cgwb_kill()
551 list_del(&wb->memcg_node); in cgwb_kill()
552 list_del(&wb->blkcg_node); in cgwb_kill()
553 list_add(&wb->offline_node, &offline_cgwbs); in cgwb_kill()
554 percpu_ref_kill(&wb->refcnt); in cgwb_kill()
557 static void cgwb_remove_from_bdi_list(struct bdi_writeback *wb) in cgwb_remove_from_bdi_list() argument
560 list_del_rcu(&wb->bdi_node); in cgwb_remove_from_bdi_list()
570 struct bdi_writeback *wb; in cgwb_create() local
581 wb = radix_tree_lookup(&bdi->cgwb_tree, memcg_css->id); in cgwb_create()
582 if (wb && wb->blkcg_css != blkcg_css) { in cgwb_create()
583 cgwb_kill(wb); in cgwb_create()
584 wb = NULL; in cgwb_create()
587 if (wb) in cgwb_create()
591 wb = kmalloc(sizeof(*wb), gfp); in cgwb_create()
592 if (!wb) { in cgwb_create()
597 ret = wb_init(wb, bdi, gfp); in cgwb_create()
601 ret = percpu_ref_init(&wb->refcnt, cgwb_release, 0, gfp); in cgwb_create()
605 ret = fprop_local_init_percpu(&wb->memcg_completions, gfp); in cgwb_create()
609 wb->memcg_css = memcg_css; in cgwb_create()
610 wb->blkcg_css = blkcg_css; in cgwb_create()
611 INIT_LIST_HEAD(&wb->b_attached); in cgwb_create()
612 INIT_WORK(&wb->release_work, cgwb_release_workfn); in cgwb_create()
613 set_bit(WB_registered, &wb->state); in cgwb_create()
624 if (test_bit(WB_registered, &bdi->wb.state) && in cgwb_create()
627 ret = radix_tree_insert(&bdi->cgwb_tree, memcg_css->id, wb); in cgwb_create()
629 list_add_tail_rcu(&wb->bdi_node, &bdi->wb_list); in cgwb_create()
630 list_add(&wb->memcg_node, memcg_cgwb_list); in cgwb_create()
631 list_add(&wb->blkcg_node, blkcg_cgwb_list); in cgwb_create()
647 fprop_local_destroy_percpu(&wb->memcg_completions); in cgwb_create()
649 percpu_ref_exit(&wb->refcnt); in cgwb_create()
651 wb_exit(wb); in cgwb_create()
653 kfree(wb); in cgwb_create()
685 struct bdi_writeback *wb; in wb_get_lookup() local
688 return &bdi->wb; in wb_get_lookup()
691 wb = radix_tree_lookup(&bdi->cgwb_tree, memcg_css->id); in wb_get_lookup()
692 if (wb) { in wb_get_lookup()
697 if (unlikely(wb->blkcg_css != blkcg_css || !wb_tryget(wb))) in wb_get_lookup()
698 wb = NULL; in wb_get_lookup()
703 return wb; in wb_get_lookup()
719 struct bdi_writeback *wb; in wb_get_create() local
724 return &bdi->wb; in wb_get_create()
727 wb = wb_get_lookup(bdi, memcg_css); in wb_get_create()
728 } while (!wb && !cgwb_create(bdi, memcg_css, gfp)); in wb_get_create()
730 return wb; in wb_get_create()
741 ret = wb_init(&bdi->wb, bdi, GFP_KERNEL); in cgwb_bdi_init()
743 bdi->wb.memcg_css = &root_mem_cgroup->css; in cgwb_bdi_init()
744 bdi->wb.blkcg_css = blkcg_root_css; in cgwb_bdi_init()
753 struct bdi_writeback *wb; in cgwb_bdi_unregister() local
755 WARN_ON(test_bit(WB_registered, &bdi->wb.state)); in cgwb_bdi_unregister()
765 wb = list_first_entry(&bdi->wb_list, struct bdi_writeback, in cgwb_bdi_unregister()
768 wb_shutdown(wb); in cgwb_bdi_unregister()
784 struct bdi_writeback *wb; in cleanup_offline_cgwbs_workfn() local
790 wb = list_first_entry(&offline_cgwbs, struct bdi_writeback, in cleanup_offline_cgwbs_workfn()
792 list_move(&wb->offline_node, &processed); in cleanup_offline_cgwbs_workfn()
803 if (wb_has_dirty_io(wb)) in cleanup_offline_cgwbs_workfn()
806 if (!wb_tryget(wb)) in cleanup_offline_cgwbs_workfn()
810 while (cleanup_offline_cgwb(wb)) in cleanup_offline_cgwbs_workfn()
814 wb_put(wb); in cleanup_offline_cgwbs_workfn()
832 struct bdi_writeback *wb, *next; in wb_memcg_offline() local
835 list_for_each_entry_safe(wb, next, memcg_cgwb_list, memcg_node) in wb_memcg_offline()
836 cgwb_kill(wb); in wb_memcg_offline()
851 struct bdi_writeback *wb, *next; in wb_blkcg_offline() local
855 list_for_each_entry_safe(wb, next, list, blkcg_node) in wb_blkcg_offline()
856 cgwb_kill(wb); in wb_blkcg_offline()
864 list_add_tail_rcu(&bdi->wb.bdi_node, &bdi->wb_list); in cgwb_bdi_register()
887 return wb_init(&bdi->wb, bdi, GFP_KERNEL); in cgwb_bdi_init()
894 list_add_tail_rcu(&bdi->wb.bdi_node, &bdi->wb_list); in cgwb_bdi_register()
897 static void cgwb_remove_from_bdi_list(struct bdi_writeback *wb) in cgwb_remove_from_bdi_list() argument
899 list_del_rcu(&wb->bdi_node); in cgwb_remove_from_bdi_list()
1004 set_bit(WB_registered, &bdi->wb.state); in bdi_register_va()
1060 wb_shutdown(&bdi->wb); in bdi_unregister()
1088 WARN_ON_ONCE(test_bit(WB_registered, &bdi->wb.state)); in release_bdi()
1090 wb_exit(&bdi->wb); in release_bdi()