Lines Matching refs:wb
53 struct bdi_writeback *wb = &bdi->wb; in bdi_debug_stats_show() local
61 spin_lock(&wb->list_lock); in bdi_debug_stats_show()
62 list_for_each_entry(inode, &wb->b_dirty, i_io_list) in bdi_debug_stats_show()
64 list_for_each_entry(inode, &wb->b_io, i_io_list) in bdi_debug_stats_show()
66 list_for_each_entry(inode, &wb->b_more_io, i_io_list) in bdi_debug_stats_show()
68 list_for_each_entry(inode, &wb->b_dirty_time, i_io_list) in bdi_debug_stats_show()
71 spin_unlock(&wb->list_lock); in bdi_debug_stats_show()
74 wb_thresh = wb_calc_thresh(wb, dirty_thresh); in bdi_debug_stats_show()
91 (unsigned long) K(wb_stat(wb, WB_WRITEBACK)), in bdi_debug_stats_show()
92 (unsigned long) K(wb_stat(wb, WB_RECLAIMABLE)), in bdi_debug_stats_show()
96 (unsigned long) K(wb_stat(wb, WB_DIRTIED)), in bdi_debug_stats_show()
97 (unsigned long) K(wb_stat(wb, WB_WRITTEN)), in bdi_debug_stats_show()
98 (unsigned long) K(wb->write_bandwidth), in bdi_debug_stats_show()
103 !list_empty(&bdi->bdi_list), bdi->wb.state); in bdi_debug_stats_show()
264 void wb_wakeup_delayed(struct bdi_writeback *wb) in wb_wakeup_delayed() argument
269 spin_lock_bh(&wb->work_lock); in wb_wakeup_delayed()
270 if (test_bit(WB_registered, &wb->state)) in wb_wakeup_delayed()
271 queue_delayed_work(bdi_wq, &wb->dwork, timeout); in wb_wakeup_delayed()
272 spin_unlock_bh(&wb->work_lock); in wb_wakeup_delayed()
277 struct bdi_writeback *wb = container_of(to_delayed_work(work), in wb_update_bandwidth_workfn() local
280 wb_update_bandwidth(wb); in wb_update_bandwidth_workfn()
288 static int wb_init(struct bdi_writeback *wb, struct backing_dev_info *bdi, in wb_init() argument
293 memset(wb, 0, sizeof(*wb)); in wb_init()
295 wb->bdi = bdi; in wb_init()
296 wb->last_old_flush = jiffies; in wb_init()
297 INIT_LIST_HEAD(&wb->b_dirty); in wb_init()
298 INIT_LIST_HEAD(&wb->b_io); in wb_init()
299 INIT_LIST_HEAD(&wb->b_more_io); in wb_init()
300 INIT_LIST_HEAD(&wb->b_dirty_time); in wb_init()
301 spin_lock_init(&wb->list_lock); in wb_init()
303 atomic_set(&wb->writeback_inodes, 0); in wb_init()
304 wb->bw_time_stamp = jiffies; in wb_init()
305 wb->balanced_dirty_ratelimit = INIT_BW; in wb_init()
306 wb->dirty_ratelimit = INIT_BW; in wb_init()
307 wb->write_bandwidth = INIT_BW; in wb_init()
308 wb->avg_write_bandwidth = INIT_BW; in wb_init()
310 spin_lock_init(&wb->work_lock); in wb_init()
311 INIT_LIST_HEAD(&wb->work_list); in wb_init()
312 INIT_DELAYED_WORK(&wb->dwork, wb_workfn); in wb_init()
313 INIT_DELAYED_WORK(&wb->bw_dwork, wb_update_bandwidth_workfn); in wb_init()
314 wb->dirty_sleep = jiffies; in wb_init()
316 err = fprop_local_init_percpu(&wb->completions, gfp); in wb_init()
321 err = percpu_counter_init(&wb->stat[i], 0, gfp); in wb_init()
330 percpu_counter_destroy(&wb->stat[i]); in wb_init()
331 fprop_local_destroy_percpu(&wb->completions); in wb_init()
335 static void cgwb_remove_from_bdi_list(struct bdi_writeback *wb);
340 static void wb_shutdown(struct bdi_writeback *wb) in wb_shutdown() argument
343 spin_lock_bh(&wb->work_lock); in wb_shutdown()
344 if (!test_and_clear_bit(WB_registered, &wb->state)) { in wb_shutdown()
345 spin_unlock_bh(&wb->work_lock); in wb_shutdown()
348 spin_unlock_bh(&wb->work_lock); in wb_shutdown()
350 cgwb_remove_from_bdi_list(wb); in wb_shutdown()
356 mod_delayed_work(bdi_wq, &wb->dwork, 0); in wb_shutdown()
357 flush_delayed_work(&wb->dwork); in wb_shutdown()
358 WARN_ON(!list_empty(&wb->work_list)); in wb_shutdown()
359 flush_delayed_work(&wb->bw_dwork); in wb_shutdown()
362 static void wb_exit(struct bdi_writeback *wb) in wb_exit() argument
366 WARN_ON(delayed_work_pending(&wb->dwork)); in wb_exit()
369 percpu_counter_destroy(&wb->stat[i]); in wb_exit()
371 fprop_local_destroy_percpu(&wb->completions); in wb_exit()
391 struct bdi_writeback *wb = container_of(work, struct bdi_writeback, in cgwb_release_workfn() local
393 struct blkcg *blkcg = css_to_blkcg(wb->blkcg_css); in cgwb_release_workfn()
394 struct backing_dev_info *bdi = wb->bdi; in cgwb_release_workfn()
396 mutex_lock(&wb->bdi->cgwb_release_mutex); in cgwb_release_workfn()
397 wb_shutdown(wb); in cgwb_release_workfn()
399 css_put(wb->memcg_css); in cgwb_release_workfn()
400 css_put(wb->blkcg_css); in cgwb_release_workfn()
401 mutex_unlock(&wb->bdi->cgwb_release_mutex); in cgwb_release_workfn()
406 fprop_local_destroy_percpu(&wb->memcg_completions); in cgwb_release_workfn()
409 list_del(&wb->offline_node); in cgwb_release_workfn()
412 percpu_ref_exit(&wb->refcnt); in cgwb_release_workfn()
413 wb_exit(wb); in cgwb_release_workfn()
415 WARN_ON_ONCE(!list_empty(&wb->b_attached)); in cgwb_release_workfn()
416 kfree_rcu(wb, rcu); in cgwb_release_workfn()
421 struct bdi_writeback *wb = container_of(refcnt, struct bdi_writeback, in cgwb_release() local
423 queue_work(cgwb_release_wq, &wb->release_work); in cgwb_release()
426 static void cgwb_kill(struct bdi_writeback *wb) in cgwb_kill() argument
430 WARN_ON(!radix_tree_delete(&wb->bdi->cgwb_tree, wb->memcg_css->id)); in cgwb_kill()
431 list_del(&wb->memcg_node); in cgwb_kill()
432 list_del(&wb->blkcg_node); in cgwb_kill()
433 list_add(&wb->offline_node, &offline_cgwbs); in cgwb_kill()
434 percpu_ref_kill(&wb->refcnt); in cgwb_kill()
437 static void cgwb_remove_from_bdi_list(struct bdi_writeback *wb) in cgwb_remove_from_bdi_list() argument
440 list_del_rcu(&wb->bdi_node); in cgwb_remove_from_bdi_list()
451 struct bdi_writeback *wb; in cgwb_create() local
463 wb = radix_tree_lookup(&bdi->cgwb_tree, memcg_css->id); in cgwb_create()
464 if (wb && wb->blkcg_css != blkcg_css) { in cgwb_create()
465 cgwb_kill(wb); in cgwb_create()
466 wb = NULL; in cgwb_create()
469 if (wb) in cgwb_create()
473 wb = kmalloc(sizeof(*wb), gfp); in cgwb_create()
474 if (!wb) { in cgwb_create()
479 ret = wb_init(wb, bdi, gfp); in cgwb_create()
483 ret = percpu_ref_init(&wb->refcnt, cgwb_release, 0, gfp); in cgwb_create()
487 ret = fprop_local_init_percpu(&wb->memcg_completions, gfp); in cgwb_create()
491 wb->memcg_css = memcg_css; in cgwb_create()
492 wb->blkcg_css = blkcg_css; in cgwb_create()
493 INIT_LIST_HEAD(&wb->b_attached); in cgwb_create()
494 INIT_WORK(&wb->release_work, cgwb_release_workfn); in cgwb_create()
495 set_bit(WB_registered, &wb->state); in cgwb_create()
506 if (test_bit(WB_registered, &bdi->wb.state) && in cgwb_create()
509 ret = radix_tree_insert(&bdi->cgwb_tree, memcg_css->id, wb); in cgwb_create()
511 list_add_tail_rcu(&wb->bdi_node, &bdi->wb_list); in cgwb_create()
512 list_add(&wb->memcg_node, memcg_cgwb_list); in cgwb_create()
513 list_add(&wb->blkcg_node, blkcg_cgwb_list); in cgwb_create()
529 fprop_local_destroy_percpu(&wb->memcg_completions); in cgwb_create()
531 percpu_ref_exit(&wb->refcnt); in cgwb_create()
533 wb_exit(wb); in cgwb_create()
535 kfree(wb); in cgwb_create()
567 struct bdi_writeback *wb; in wb_get_lookup() local
570 return &bdi->wb; in wb_get_lookup()
573 wb = radix_tree_lookup(&bdi->cgwb_tree, memcg_css->id); in wb_get_lookup()
574 if (wb) { in wb_get_lookup()
579 if (unlikely(wb->blkcg_css != blkcg_css || !wb_tryget(wb))) in wb_get_lookup()
580 wb = NULL; in wb_get_lookup()
585 return wb; in wb_get_lookup()
601 struct bdi_writeback *wb; in wb_get_create() local
606 return &bdi->wb; in wb_get_create()
609 wb = wb_get_lookup(bdi, memcg_css); in wb_get_create()
610 } while (!wb && !cgwb_create(bdi, memcg_css, gfp)); in wb_get_create()
612 return wb; in wb_get_create()
623 ret = wb_init(&bdi->wb, bdi, GFP_KERNEL); in cgwb_bdi_init()
625 bdi->wb.memcg_css = &root_mem_cgroup->css; in cgwb_bdi_init()
626 bdi->wb.blkcg_css = blkcg_root_css; in cgwb_bdi_init()
635 struct bdi_writeback *wb; in cgwb_bdi_unregister() local
637 WARN_ON(test_bit(WB_registered, &bdi->wb.state)); in cgwb_bdi_unregister()
647 wb = list_first_entry(&bdi->wb_list, struct bdi_writeback, in cgwb_bdi_unregister()
650 wb_shutdown(wb); in cgwb_bdi_unregister()
666 struct bdi_writeback *wb; in cleanup_offline_cgwbs_workfn() local
672 wb = list_first_entry(&offline_cgwbs, struct bdi_writeback, in cleanup_offline_cgwbs_workfn()
674 list_move(&wb->offline_node, &processed); in cleanup_offline_cgwbs_workfn()
685 if (wb_has_dirty_io(wb)) in cleanup_offline_cgwbs_workfn()
688 if (!wb_tryget(wb)) in cleanup_offline_cgwbs_workfn()
692 while (cleanup_offline_cgwb(wb)) in cleanup_offline_cgwbs_workfn()
696 wb_put(wb); in cleanup_offline_cgwbs_workfn()
714 struct bdi_writeback *wb, *next; in wb_memcg_offline() local
717 list_for_each_entry_safe(wb, next, memcg_cgwb_list, memcg_node) in wb_memcg_offline()
718 cgwb_kill(wb); in wb_memcg_offline()
733 struct bdi_writeback *wb, *next; in wb_blkcg_offline() local
736 list_for_each_entry_safe(wb, next, &blkcg->cgwb_list, blkcg_node) in wb_blkcg_offline()
737 cgwb_kill(wb); in wb_blkcg_offline()
745 list_add_tail_rcu(&bdi->wb.bdi_node, &bdi->wb_list); in cgwb_bdi_register()
768 return wb_init(&bdi->wb, bdi, GFP_KERNEL); in cgwb_bdi_init()
775 list_add_tail_rcu(&bdi->wb.bdi_node, &bdi->wb_list); in cgwb_bdi_register()
778 static void cgwb_remove_from_bdi_list(struct bdi_writeback *wb) in cgwb_remove_from_bdi_list() argument
780 list_del_rcu(&wb->bdi_node); in cgwb_remove_from_bdi_list()
889 set_bit(WB_registered, &bdi->wb.state); in bdi_register_va()
945 wb_shutdown(&bdi->wb); in bdi_unregister()
973 WARN_ON_ONCE(test_bit(WB_registered, &bdi->wb.state)); in release_bdi()
975 wb_exit(&bdi->wb); in release_bdi()
1021 if (test_and_clear_bit(bit, &bdi->wb.congested)) in clear_bdi_congested()
1034 if (!test_and_set_bit(bit, &bdi->wb.congested)) in set_bdi_congested()