Lines Matching refs:bdi
50 struct backing_dev_info *bdi = m->private; in bdi_debug_stats_show() local
51 struct bdi_writeback *wb = &bdi->wb; in bdi_debug_stats_show()
102 !list_empty(&bdi->bdi_list), bdi->wb.state); in bdi_debug_stats_show()
109 static void bdi_debug_register(struct backing_dev_info *bdi, const char *name) in bdi_debug_register() argument
111 bdi->debug_dir = debugfs_create_dir(name, bdi_debug_root); in bdi_debug_register()
113 debugfs_create_file("stats", 0444, bdi->debug_dir, bdi, in bdi_debug_register()
117 static void bdi_debug_unregister(struct backing_dev_info *bdi) in bdi_debug_unregister() argument
119 debugfs_remove_recursive(bdi->debug_dir); in bdi_debug_unregister()
125 static inline void bdi_debug_register(struct backing_dev_info *bdi, in bdi_debug_register() argument
129 static inline void bdi_debug_unregister(struct backing_dev_info *bdi) in bdi_debug_unregister() argument
138 struct backing_dev_info *bdi = dev_get_drvdata(dev); in read_ahead_kb_store() local
146 bdi->ra_pages = read_ahead_kb >> (PAGE_SHIFT - 10); in read_ahead_kb_store()
157 struct backing_dev_info *bdi = dev_get_drvdata(dev); \
163 BDI_SHOW(read_ahead_kb, K(bdi->ra_pages))
168 struct backing_dev_info *bdi = dev_get_drvdata(dev); in min_ratio_store() local
176 ret = bdi_set_min_ratio(bdi, ratio); in min_ratio_store()
182 BDI_SHOW(min_ratio, bdi->min_ratio)
187 struct backing_dev_info *bdi = dev_get_drvdata(dev); in max_ratio_store() local
195 ret = bdi_set_max_ratio(bdi, ratio); in max_ratio_store()
201 BDI_SHOW(max_ratio, bdi->max_ratio)
207 struct backing_dev_info *bdi = dev_get_drvdata(dev); in stable_pages_required_show() local
210 bdi_cap_stable_pages_required(bdi) ? 1 : 0); in stable_pages_required_show()
236 static int bdi_init(struct backing_dev_info *bdi);
283 static int wb_init(struct bdi_writeback *wb, struct backing_dev_info *bdi, in wb_init() argument
290 if (wb != &bdi->wb) in wb_init()
291 bdi_get(bdi); in wb_init()
292 wb->bdi = bdi; in wb_init()
311 wb->congested = wb_congested_get_create(bdi, blkcg_id, gfp); in wb_init()
336 if (wb != &bdi->wb) in wb_init()
337 bdi_put(bdi); in wb_init()
378 if (wb != &wb->bdi->wb) in wb_exit()
379 bdi_put(wb->bdi); in wb_exit()
405 wb_congested_get_create(struct backing_dev_info *bdi, int blkcg_id, gfp_t gfp) in wb_congested_get_create() argument
413 node = &bdi->cgwb_congested_tree.rb_node; in wb_congested_get_create()
432 rb_insert_color(&congested->rb_node, &bdi->cgwb_congested_tree); in wb_congested_get_create()
445 new_congested->__bdi = bdi; in wb_congested_get_create()
486 mutex_lock(&wb->bdi->cgwb_release_mutex); in cgwb_release_workfn()
491 mutex_unlock(&wb->bdi->cgwb_release_mutex); in cgwb_release_workfn()
513 WARN_ON(!radix_tree_delete(&wb->bdi->cgwb_tree, wb->memcg_css->id)); in cgwb_kill()
526 static int cgwb_create(struct backing_dev_info *bdi, in cgwb_create() argument
545 wb = radix_tree_lookup(&bdi->cgwb_tree, memcg_css->id); in cgwb_create()
561 ret = wb_init(wb, bdi, blkcg_css->id, gfp); in cgwb_create()
586 if (test_bit(WB_registered, &bdi->wb.state) && in cgwb_create()
589 ret = radix_tree_insert(&bdi->cgwb_tree, memcg_css->id, wb); in cgwb_create()
591 list_add_tail_rcu(&wb->bdi_node, &bdi->wb_list); in cgwb_create()
643 struct bdi_writeback *wb_get_lookup(struct backing_dev_info *bdi, in wb_get_lookup() argument
649 return &bdi->wb; in wb_get_lookup()
652 wb = radix_tree_lookup(&bdi->cgwb_tree, memcg_css->id); in wb_get_lookup()
676 struct bdi_writeback *wb_get_create(struct backing_dev_info *bdi, in wb_get_create() argument
685 return &bdi->wb; in wb_get_create()
688 wb = wb_get_lookup(bdi, memcg_css); in wb_get_create()
689 } while (!wb && !cgwb_create(bdi, memcg_css, gfp)); in wb_get_create()
694 static int cgwb_bdi_init(struct backing_dev_info *bdi) in cgwb_bdi_init() argument
698 INIT_RADIX_TREE(&bdi->cgwb_tree, GFP_ATOMIC); in cgwb_bdi_init()
699 bdi->cgwb_congested_tree = RB_ROOT; in cgwb_bdi_init()
700 mutex_init(&bdi->cgwb_release_mutex); in cgwb_bdi_init()
701 init_rwsem(&bdi->wb_switch_rwsem); in cgwb_bdi_init()
703 ret = wb_init(&bdi->wb, bdi, 1, GFP_KERNEL); in cgwb_bdi_init()
705 bdi->wb.memcg_css = &root_mem_cgroup->css; in cgwb_bdi_init()
706 bdi->wb.blkcg_css = blkcg_root_css; in cgwb_bdi_init()
711 static void cgwb_bdi_unregister(struct backing_dev_info *bdi) in cgwb_bdi_unregister() argument
717 WARN_ON(test_bit(WB_registered, &bdi->wb.state)); in cgwb_bdi_unregister()
720 radix_tree_for_each_slot(slot, &bdi->cgwb_tree, &iter, 0) in cgwb_bdi_unregister()
724 mutex_lock(&bdi->cgwb_release_mutex); in cgwb_bdi_unregister()
726 while (!list_empty(&bdi->wb_list)) { in cgwb_bdi_unregister()
727 wb = list_first_entry(&bdi->wb_list, struct bdi_writeback, in cgwb_bdi_unregister()
734 mutex_unlock(&bdi->cgwb_release_mutex); in cgwb_bdi_unregister()
772 static void cgwb_bdi_exit(struct backing_dev_info *bdi) in cgwb_bdi_exit() argument
777 while ((rbn = rb_first(&bdi->cgwb_congested_tree))) { in cgwb_bdi_exit()
781 rb_erase(rbn, &bdi->cgwb_congested_tree); in cgwb_bdi_exit()
787 static void cgwb_bdi_register(struct backing_dev_info *bdi) in cgwb_bdi_register() argument
790 list_add_tail_rcu(&bdi->wb.bdi_node, &bdi->wb_list); in cgwb_bdi_register()
811 static int cgwb_bdi_init(struct backing_dev_info *bdi) in cgwb_bdi_init() argument
815 bdi->wb_congested = kzalloc(sizeof(*bdi->wb_congested), GFP_KERNEL); in cgwb_bdi_init()
816 if (!bdi->wb_congested) in cgwb_bdi_init()
819 refcount_set(&bdi->wb_congested->refcnt, 1); in cgwb_bdi_init()
821 err = wb_init(&bdi->wb, bdi, 1, GFP_KERNEL); in cgwb_bdi_init()
823 wb_congested_put(bdi->wb_congested); in cgwb_bdi_init()
829 static void cgwb_bdi_unregister(struct backing_dev_info *bdi) { } in cgwb_bdi_unregister() argument
831 static void cgwb_bdi_exit(struct backing_dev_info *bdi) in cgwb_bdi_exit() argument
833 wb_congested_put(bdi->wb_congested); in cgwb_bdi_exit()
836 static void cgwb_bdi_register(struct backing_dev_info *bdi) in cgwb_bdi_register() argument
838 list_add_tail_rcu(&bdi->wb.bdi_node, &bdi->wb_list); in cgwb_bdi_register()
848 static int bdi_init(struct backing_dev_info *bdi) in bdi_init() argument
852 bdi->dev = NULL; in bdi_init()
854 kref_init(&bdi->refcnt); in bdi_init()
855 bdi->min_ratio = 0; in bdi_init()
856 bdi->max_ratio = 100; in bdi_init()
857 bdi->max_prop_frac = FPROP_FRAC_BASE; in bdi_init()
858 INIT_LIST_HEAD(&bdi->bdi_list); in bdi_init()
859 INIT_LIST_HEAD(&bdi->wb_list); in bdi_init()
860 init_waitqueue_head(&bdi->wb_waitq); in bdi_init()
862 ret = cgwb_bdi_init(bdi); in bdi_init()
869 struct backing_dev_info *bdi; in bdi_alloc_node() local
871 bdi = kmalloc_node(sizeof(struct backing_dev_info), in bdi_alloc_node()
873 if (!bdi) in bdi_alloc_node()
876 if (bdi_init(bdi)) { in bdi_alloc_node()
877 kfree(bdi); in bdi_alloc_node()
880 return bdi; in bdi_alloc_node()
888 struct backing_dev_info *bdi; in bdi_lookup_rb_node() local
894 bdi = rb_entry(parent, struct backing_dev_info, rb_node); in bdi_lookup_rb_node()
896 if (bdi->id > id) in bdi_lookup_rb_node()
898 else if (bdi->id < id) in bdi_lookup_rb_node()
918 struct backing_dev_info *bdi = NULL; in bdi_get_by_id() local
924 bdi = rb_entry(*p, struct backing_dev_info, rb_node); in bdi_get_by_id()
925 bdi_get(bdi); in bdi_get_by_id()
929 return bdi; in bdi_get_by_id()
932 int bdi_register_va(struct backing_dev_info *bdi, const char *fmt, va_list args) in bdi_register_va() argument
937 if (bdi->dev) /* The driver needs to use separate queues per device */ in bdi_register_va()
940 dev = device_create_vargs(bdi_class, NULL, MKDEV(0, 0), bdi, fmt, args); in bdi_register_va()
944 cgwb_bdi_register(bdi); in bdi_register_va()
945 bdi->dev = dev; in bdi_register_va()
947 bdi_debug_register(bdi, dev_name(dev)); in bdi_register_va()
948 set_bit(WB_registered, &bdi->wb.state); in bdi_register_va()
952 bdi->id = ++bdi_id_cursor; in bdi_register_va()
954 p = bdi_lookup_rb_node(bdi->id, &parent); in bdi_register_va()
955 rb_link_node(&bdi->rb_node, parent, p); in bdi_register_va()
956 rb_insert_color(&bdi->rb_node, &bdi_tree); in bdi_register_va()
958 list_add_tail_rcu(&bdi->bdi_list, &bdi_list); in bdi_register_va()
962 trace_writeback_bdi_register(bdi); in bdi_register_va()
967 int bdi_register(struct backing_dev_info *bdi, const char *fmt, ...) in bdi_register() argument
973 ret = bdi_register_va(bdi, fmt, args); in bdi_register()
979 int bdi_register_owner(struct backing_dev_info *bdi, struct device *owner) in bdi_register_owner() argument
983 rc = bdi_register(bdi, "%u:%u", MAJOR(owner->devt), MINOR(owner->devt)); in bdi_register_owner()
987 WARN_ON(bdi->owner); in bdi_register_owner()
988 bdi->owner = owner; in bdi_register_owner()
997 static void bdi_remove_from_list(struct backing_dev_info *bdi) in bdi_remove_from_list() argument
1000 rb_erase(&bdi->rb_node, &bdi_tree); in bdi_remove_from_list()
1001 list_del_rcu(&bdi->bdi_list); in bdi_remove_from_list()
1007 void bdi_unregister(struct backing_dev_info *bdi) in bdi_unregister() argument
1010 bdi_remove_from_list(bdi); in bdi_unregister()
1011 wb_shutdown(&bdi->wb); in bdi_unregister()
1012 cgwb_bdi_unregister(bdi); in bdi_unregister()
1014 if (bdi->dev) { in bdi_unregister()
1015 bdi_debug_unregister(bdi); in bdi_unregister()
1016 device_unregister(bdi->dev); in bdi_unregister()
1017 bdi->dev = NULL; in bdi_unregister()
1020 if (bdi->owner) { in bdi_unregister()
1021 put_device(bdi->owner); in bdi_unregister()
1022 bdi->owner = NULL; in bdi_unregister()
1028 struct backing_dev_info *bdi = in release_bdi() local
1031 if (test_bit(WB_registered, &bdi->wb.state)) in release_bdi()
1032 bdi_unregister(bdi); in release_bdi()
1033 WARN_ON_ONCE(bdi->dev); in release_bdi()
1034 wb_exit(&bdi->wb); in release_bdi()
1035 cgwb_bdi_exit(bdi); in release_bdi()
1036 kfree(bdi); in release_bdi()
1039 void bdi_put(struct backing_dev_info *bdi) in bdi_put() argument
1041 kref_put(&bdi->refcnt, release_bdi); in bdi_put()