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()
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()
268 void wb_wakeup_delayed(struct bdi_writeback *wb) in wb_wakeup_delayed() argument
273 spin_lock_bh(&wb->work_lock); in wb_wakeup_delayed()
274 if (test_bit(WB_registered, &wb->state)) in wb_wakeup_delayed()
275 queue_delayed_work(bdi_wq, &wb->dwork, timeout); in wb_wakeup_delayed()
276 spin_unlock_bh(&wb->work_lock); in wb_wakeup_delayed()
284 static int wb_init(struct bdi_writeback *wb, struct backing_dev_info *bdi, in wb_init() argument
289 memset(wb, 0, sizeof(*wb)); in wb_init()
291 if (wb != &bdi->wb) in wb_init()
293 wb->bdi = bdi; in wb_init()
294 wb->last_old_flush = jiffies; in wb_init()
295 INIT_LIST_HEAD(&wb->b_dirty); in wb_init()
296 INIT_LIST_HEAD(&wb->b_io); in wb_init()
297 INIT_LIST_HEAD(&wb->b_more_io); in wb_init()
298 INIT_LIST_HEAD(&wb->b_dirty_time); in wb_init()
299 spin_lock_init(&wb->list_lock); in wb_init()
301 wb->bw_time_stamp = jiffies; in wb_init()
302 wb->balanced_dirty_ratelimit = INIT_BW; in wb_init()
303 wb->dirty_ratelimit = INIT_BW; in wb_init()
304 wb->write_bandwidth = INIT_BW; in wb_init()
305 wb->avg_write_bandwidth = INIT_BW; in wb_init()
307 spin_lock_init(&wb->work_lock); in wb_init()
308 INIT_LIST_HEAD(&wb->work_list); in wb_init()
309 INIT_DELAYED_WORK(&wb->dwork, wb_workfn); in wb_init()
310 wb->dirty_sleep = jiffies; in wb_init()
312 wb->congested = wb_congested_get_create(bdi, blkcg_id, gfp); in wb_init()
313 if (!wb->congested) { in wb_init()
318 err = fprop_local_init_percpu(&wb->completions, gfp); in wb_init()
323 err = percpu_counter_init(&wb->stat[i], 0, gfp); in wb_init()
332 percpu_counter_destroy(&wb->stat[i]); in wb_init()
333 fprop_local_destroy_percpu(&wb->completions); in wb_init()
335 wb_congested_put(wb->congested); in wb_init()
337 if (wb != &bdi->wb) in wb_init()
342 static void cgwb_remove_from_bdi_list(struct bdi_writeback *wb);
347 static void wb_shutdown(struct bdi_writeback *wb) in wb_shutdown() argument
350 spin_lock_bh(&wb->work_lock); in wb_shutdown()
351 if (!test_and_clear_bit(WB_registered, &wb->state)) { in wb_shutdown()
352 spin_unlock_bh(&wb->work_lock); in wb_shutdown()
355 spin_unlock_bh(&wb->work_lock); in wb_shutdown()
357 cgwb_remove_from_bdi_list(wb); in wb_shutdown()
363 mod_delayed_work(bdi_wq, &wb->dwork, 0); in wb_shutdown()
364 flush_delayed_work(&wb->dwork); in wb_shutdown()
365 WARN_ON(!list_empty(&wb->work_list)); in wb_shutdown()
368 static void wb_exit(struct bdi_writeback *wb) in wb_exit() argument
372 WARN_ON(delayed_work_pending(&wb->dwork)); in wb_exit()
375 percpu_counter_destroy(&wb->stat[i]); in wb_exit()
377 fprop_local_destroy_percpu(&wb->completions); in wb_exit()
378 wb_congested_put(wb->congested); in wb_exit()
379 if (wb != &wb->bdi->wb) in wb_exit()
380 bdi_put(wb->bdi); in wb_exit()
483 struct bdi_writeback *wb = container_of(work, struct bdi_writeback, in cgwb_release_workfn() local
485 struct blkcg *blkcg = css_to_blkcg(wb->blkcg_css); in cgwb_release_workfn()
487 mutex_lock(&wb->bdi->cgwb_release_mutex); in cgwb_release_workfn()
488 wb_shutdown(wb); in cgwb_release_workfn()
490 css_put(wb->memcg_css); in cgwb_release_workfn()
491 css_put(wb->blkcg_css); in cgwb_release_workfn()
492 mutex_unlock(&wb->bdi->cgwb_release_mutex); in cgwb_release_workfn()
497 fprop_local_destroy_percpu(&wb->memcg_completions); in cgwb_release_workfn()
498 percpu_ref_exit(&wb->refcnt); in cgwb_release_workfn()
499 wb_exit(wb); in cgwb_release_workfn()
500 kfree_rcu(wb, rcu); in cgwb_release_workfn()
505 struct bdi_writeback *wb = container_of(refcnt, struct bdi_writeback, in cgwb_release() local
507 queue_work(cgwb_release_wq, &wb->release_work); in cgwb_release()
510 static void cgwb_kill(struct bdi_writeback *wb) in cgwb_kill() argument
514 WARN_ON(!radix_tree_delete(&wb->bdi->cgwb_tree, wb->memcg_css->id)); in cgwb_kill()
515 list_del(&wb->memcg_node); in cgwb_kill()
516 list_del(&wb->blkcg_node); in cgwb_kill()
517 percpu_ref_kill(&wb->refcnt); in cgwb_kill()
520 static void cgwb_remove_from_bdi_list(struct bdi_writeback *wb) in cgwb_remove_from_bdi_list() argument
523 list_del_rcu(&wb->bdi_node); in cgwb_remove_from_bdi_list()
534 struct bdi_writeback *wb; in cgwb_create() local
546 wb = radix_tree_lookup(&bdi->cgwb_tree, memcg_css->id); in cgwb_create()
547 if (wb && wb->blkcg_css != blkcg_css) { in cgwb_create()
548 cgwb_kill(wb); in cgwb_create()
549 wb = NULL; in cgwb_create()
552 if (wb) in cgwb_create()
556 wb = kmalloc(sizeof(*wb), gfp); in cgwb_create()
557 if (!wb) { in cgwb_create()
562 ret = wb_init(wb, bdi, blkcg_css->id, gfp); in cgwb_create()
566 ret = percpu_ref_init(&wb->refcnt, cgwb_release, 0, gfp); in cgwb_create()
570 ret = fprop_local_init_percpu(&wb->memcg_completions, gfp); in cgwb_create()
574 wb->memcg_css = memcg_css; in cgwb_create()
575 wb->blkcg_css = blkcg_css; in cgwb_create()
576 INIT_WORK(&wb->release_work, cgwb_release_workfn); in cgwb_create()
577 set_bit(WB_registered, &wb->state); in cgwb_create()
587 if (test_bit(WB_registered, &bdi->wb.state) && in cgwb_create()
590 ret = radix_tree_insert(&bdi->cgwb_tree, memcg_css->id, wb); in cgwb_create()
592 list_add_tail_rcu(&wb->bdi_node, &bdi->wb_list); in cgwb_create()
593 list_add(&wb->memcg_node, memcg_cgwb_list); in cgwb_create()
594 list_add(&wb->blkcg_node, blkcg_cgwb_list); in cgwb_create()
609 fprop_local_destroy_percpu(&wb->memcg_completions); in cgwb_create()
611 percpu_ref_exit(&wb->refcnt); in cgwb_create()
613 wb_exit(wb); in cgwb_create()
615 kfree(wb); in cgwb_create()
647 struct bdi_writeback *wb; in wb_get_lookup() local
650 return &bdi->wb; in wb_get_lookup()
653 wb = radix_tree_lookup(&bdi->cgwb_tree, memcg_css->id); in wb_get_lookup()
654 if (wb) { in wb_get_lookup()
659 if (unlikely(wb->blkcg_css != blkcg_css || !wb_tryget(wb))) in wb_get_lookup()
660 wb = NULL; in wb_get_lookup()
665 return wb; in wb_get_lookup()
681 struct bdi_writeback *wb; in wb_get_create() local
686 return &bdi->wb; in wb_get_create()
689 wb = wb_get_lookup(bdi, memcg_css); in wb_get_create()
690 } while (!wb && !cgwb_create(bdi, memcg_css, gfp)); in wb_get_create()
692 return wb; in wb_get_create()
704 ret = wb_init(&bdi->wb, bdi, 1, GFP_KERNEL); in cgwb_bdi_init()
706 bdi->wb.memcg_css = &root_mem_cgroup->css; in cgwb_bdi_init()
707 bdi->wb.blkcg_css = blkcg_root_css; in cgwb_bdi_init()
716 struct bdi_writeback *wb; in cgwb_bdi_unregister() local
718 WARN_ON(test_bit(WB_registered, &bdi->wb.state)); in cgwb_bdi_unregister()
728 wb = list_first_entry(&bdi->wb_list, struct bdi_writeback, in cgwb_bdi_unregister()
731 wb_shutdown(wb); in cgwb_bdi_unregister()
747 struct bdi_writeback *wb, *next; in wb_memcg_offline() local
750 list_for_each_entry_safe(wb, next, memcg_cgwb_list, memcg_node) in wb_memcg_offline()
751 cgwb_kill(wb); in wb_memcg_offline()
764 struct bdi_writeback *wb, *next; in wb_blkcg_offline() local
767 list_for_each_entry_safe(wb, next, &blkcg->cgwb_list, blkcg_node) in wb_blkcg_offline()
768 cgwb_kill(wb); in wb_blkcg_offline()
791 list_add_tail_rcu(&bdi->wb.bdi_node, &bdi->wb_list); in cgwb_bdi_register()
822 err = wb_init(&bdi->wb, bdi, 1, GFP_KERNEL); in cgwb_bdi_init()
839 list_add_tail_rcu(&bdi->wb.bdi_node, &bdi->wb_list); in cgwb_bdi_register()
842 static void cgwb_remove_from_bdi_list(struct bdi_writeback *wb) in cgwb_remove_from_bdi_list() argument
844 list_del_rcu(&wb->bdi_node); in cgwb_remove_from_bdi_list()
950 set_bit(WB_registered, &bdi->wb.state); in bdi_register_va()
1013 wb_shutdown(&bdi->wb); in bdi_unregister()
1040 if (test_bit(WB_registered, &bdi->wb.state)) in release_bdi()
1043 wb_exit(&bdi->wb); in release_bdi()