Lines Matching refs:bdi
87 static void bdi_collect_stats(struct backing_dev_info *bdi, in bdi_collect_stats() argument
93 list_for_each_entry_rcu(wb, &bdi->wb_list, bdi_node) { in bdi_collect_stats()
103 static void bdi_collect_stats(struct backing_dev_info *bdi, in bdi_collect_stats() argument
106 collect_wb_stats(stats, &bdi->wb); in bdi_collect_stats()
112 struct backing_dev_info *bdi = m->private; in bdi_debug_stats_show() local
122 bdi_collect_stats(bdi, &stats); in bdi_debug_stats_show()
123 tot_bw = atomic_long_read(&bdi->tot_write_bandwidth); in bdi_debug_stats_show()
152 !list_empty(&bdi->bdi_list), bdi->wb.state); in bdi_debug_stats_show()
195 struct backing_dev_info *bdi = m->private; in cgwb_debug_stats_show() local
203 list_for_each_entry_rcu(wb, &bdi->wb_list, bdi_node) { in cgwb_debug_stats_show()
233 static void bdi_debug_register(struct backing_dev_info *bdi, const char *name) in bdi_debug_register() argument
235 bdi->debug_dir = debugfs_create_dir(name, bdi_debug_root); in bdi_debug_register()
237 debugfs_create_file("stats", 0444, bdi->debug_dir, bdi, in bdi_debug_register()
239 debugfs_create_file("wb_stats", 0444, bdi->debug_dir, bdi, in bdi_debug_register()
243 static void bdi_debug_unregister(struct backing_dev_info *bdi) in bdi_debug_unregister() argument
245 debugfs_remove_recursive(bdi->debug_dir); in bdi_debug_unregister()
251 static inline void bdi_debug_register(struct backing_dev_info *bdi, in bdi_debug_register() argument
255 static inline void bdi_debug_unregister(struct backing_dev_info *bdi) in bdi_debug_unregister() argument
264 struct backing_dev_info *bdi = dev_get_drvdata(dev); in read_ahead_kb_store() local
272 bdi->ra_pages = read_ahead_kb >> (PAGE_SHIFT - 10); in read_ahead_kb_store()
281 struct backing_dev_info *bdi = dev_get_drvdata(dev); \
287 BDI_SHOW(read_ahead_kb, K(bdi->ra_pages))
292 struct backing_dev_info *bdi = dev_get_drvdata(dev); in min_ratio_store() local
300 ret = bdi_set_min_ratio(bdi, ratio); in min_ratio_store()
306 BDI_SHOW(min_ratio, bdi->min_ratio / BDI_RATIO_SCALE)
311 struct backing_dev_info *bdi = dev_get_drvdata(dev); in min_ratio_fine_store() local
319 ret = bdi_set_min_ratio_no_scale(bdi, ratio); in min_ratio_fine_store()
325 BDI_SHOW(min_ratio_fine, bdi->min_ratio)
330 struct backing_dev_info *bdi = dev_get_drvdata(dev); in max_ratio_store() local
338 ret = bdi_set_max_ratio(bdi, ratio); in max_ratio_store()
344 BDI_SHOW(max_ratio, bdi->max_ratio / BDI_RATIO_SCALE)
349 struct backing_dev_info *bdi = dev_get_drvdata(dev); in max_ratio_fine_store() local
357 ret = bdi_set_max_ratio_no_scale(bdi, ratio); in max_ratio_fine_store()
363 BDI_SHOW(max_ratio_fine, bdi->max_ratio)
369 struct backing_dev_info *bdi = dev_get_drvdata(dev); in min_bytes_show() local
371 return sysfs_emit(buf, "%llu\n", bdi_get_min_bytes(bdi)); in min_bytes_show()
377 struct backing_dev_info *bdi = dev_get_drvdata(dev); in min_bytes_store() local
385 ret = bdi_set_min_bytes(bdi, bytes); in min_bytes_store()
397 struct backing_dev_info *bdi = dev_get_drvdata(dev); in max_bytes_show() local
399 return sysfs_emit(buf, "%llu\n", bdi_get_max_bytes(bdi)); in max_bytes_show()
405 struct backing_dev_info *bdi = dev_get_drvdata(dev); in max_bytes_store() local
413 ret = bdi_set_max_bytes(bdi, bytes); in max_bytes_store()
434 struct backing_dev_info *bdi = dev_get_drvdata(dev); in strict_limit_store() local
442 ret = bdi_set_strict_limit(bdi, strict_limit); in strict_limit_store()
452 struct backing_dev_info *bdi = dev_get_drvdata(dev); in strict_limit_show() local
455 !!(bdi->capabilities & BDI_CAP_STRICTLIMIT)); in strict_limit_show()
515 static int wb_init(struct bdi_writeback *wb, struct backing_dev_info *bdi, in wb_init() argument
522 wb->bdi = bdi; in wb_init()
615 struct backing_dev_info *bdi = wb->bdi; in cgwb_release_workfn() local
617 mutex_lock(&wb->bdi->cgwb_release_mutex); in cgwb_release_workfn()
622 mutex_unlock(&wb->bdi->cgwb_release_mutex); in cgwb_release_workfn()
634 bdi_put(bdi); in cgwb_release_workfn()
650 WARN_ON(!radix_tree_delete(&wb->bdi->cgwb_tree, wb->memcg_css->id)); in cgwb_kill()
664 static int cgwb_create(struct backing_dev_info *bdi, in cgwb_create() argument
681 wb = radix_tree_lookup(&bdi->cgwb_tree, memcg_css->id); in cgwb_create()
697 ret = wb_init(wb, bdi, gfp); in cgwb_create()
714 bdi_get(bdi); in cgwb_create()
724 if (test_bit(WB_registered, &bdi->wb.state) && in cgwb_create()
727 ret = radix_tree_insert(&bdi->cgwb_tree, memcg_css->id, wb); in cgwb_create()
729 list_add_tail_rcu(&wb->bdi_node, &bdi->wb_list); in cgwb_create()
746 bdi_put(bdi); in cgwb_create()
782 struct bdi_writeback *wb_get_lookup(struct backing_dev_info *bdi, in wb_get_lookup() argument
788 return &bdi->wb; in wb_get_lookup()
791 wb = radix_tree_lookup(&bdi->cgwb_tree, memcg_css->id); in wb_get_lookup()
815 struct bdi_writeback *wb_get_create(struct backing_dev_info *bdi, in wb_get_create() argument
824 wb = wb_get_lookup(bdi, memcg_css); in wb_get_create()
825 } while (!wb && !cgwb_create(bdi, memcg_css, gfp)); in wb_get_create()
830 static int cgwb_bdi_init(struct backing_dev_info *bdi) in cgwb_bdi_init() argument
834 INIT_RADIX_TREE(&bdi->cgwb_tree, GFP_ATOMIC); in cgwb_bdi_init()
835 mutex_init(&bdi->cgwb_release_mutex); in cgwb_bdi_init()
836 init_rwsem(&bdi->wb_switch_rwsem); in cgwb_bdi_init()
838 ret = wb_init(&bdi->wb, bdi, GFP_KERNEL); in cgwb_bdi_init()
840 bdi->wb.memcg_css = &root_mem_cgroup->css; in cgwb_bdi_init()
841 bdi->wb.blkcg_css = blkcg_root_css; in cgwb_bdi_init()
846 static void cgwb_bdi_unregister(struct backing_dev_info *bdi) in cgwb_bdi_unregister() argument
852 WARN_ON(test_bit(WB_registered, &bdi->wb.state)); in cgwb_bdi_unregister()
855 radix_tree_for_each_slot(slot, &bdi->cgwb_tree, &iter, 0) in cgwb_bdi_unregister()
859 mutex_lock(&bdi->cgwb_release_mutex); in cgwb_bdi_unregister()
861 while (!list_empty(&bdi->wb_list)) { in cgwb_bdi_unregister()
862 wb = list_first_entry(&bdi->wb_list, struct bdi_writeback, in cgwb_bdi_unregister()
869 mutex_unlock(&bdi->cgwb_release_mutex); in cgwb_bdi_unregister()
958 static void cgwb_bdi_register(struct backing_dev_info *bdi) in cgwb_bdi_register() argument
961 list_add_tail_rcu(&bdi->wb.bdi_node, &bdi->wb_list); in cgwb_bdi_register()
982 static int cgwb_bdi_init(struct backing_dev_info *bdi) in cgwb_bdi_init() argument
984 return wb_init(&bdi->wb, bdi, GFP_KERNEL); in cgwb_bdi_init()
987 static void cgwb_bdi_unregister(struct backing_dev_info *bdi) { } in cgwb_bdi_unregister() argument
989 static void cgwb_bdi_register(struct backing_dev_info *bdi) in cgwb_bdi_register() argument
991 list_add_tail_rcu(&bdi->wb.bdi_node, &bdi->wb_list); in cgwb_bdi_register()
1001 int bdi_init(struct backing_dev_info *bdi) in bdi_init() argument
1003 bdi->dev = NULL; in bdi_init()
1005 kref_init(&bdi->refcnt); in bdi_init()
1006 bdi->min_ratio = 0; in bdi_init()
1007 bdi->max_ratio = 100 * BDI_RATIO_SCALE; in bdi_init()
1008 bdi->max_prop_frac = FPROP_FRAC_BASE; in bdi_init()
1009 INIT_LIST_HEAD(&bdi->bdi_list); in bdi_init()
1010 INIT_LIST_HEAD(&bdi->wb_list); in bdi_init()
1011 init_waitqueue_head(&bdi->wb_waitq); in bdi_init()
1012 bdi->last_bdp_sleep = jiffies; in bdi_init()
1014 return cgwb_bdi_init(bdi); in bdi_init()
1019 struct backing_dev_info *bdi; in bdi_alloc() local
1021 bdi = kzalloc_node(sizeof(*bdi), GFP_KERNEL, node_id); in bdi_alloc()
1022 if (!bdi) in bdi_alloc()
1025 if (bdi_init(bdi)) { in bdi_alloc()
1026 kfree(bdi); in bdi_alloc()
1029 bdi->capabilities = BDI_CAP_WRITEBACK | BDI_CAP_WRITEBACK_ACCT; in bdi_alloc()
1030 bdi->ra_pages = VM_READAHEAD_PAGES; in bdi_alloc()
1031 bdi->io_pages = VM_READAHEAD_PAGES; in bdi_alloc()
1032 timer_setup(&bdi->laptop_mode_wb_timer, laptop_mode_timer_fn, 0); in bdi_alloc()
1033 return bdi; in bdi_alloc()
1041 struct backing_dev_info *bdi; in bdi_lookup_rb_node() local
1047 bdi = rb_entry(parent, struct backing_dev_info, rb_node); in bdi_lookup_rb_node()
1049 if (bdi->id > id) in bdi_lookup_rb_node()
1051 else if (bdi->id < id) in bdi_lookup_rb_node()
1071 struct backing_dev_info *bdi = NULL; in bdi_get_by_id() local
1077 bdi = rb_entry(*p, struct backing_dev_info, rb_node); in bdi_get_by_id()
1078 bdi_get(bdi); in bdi_get_by_id()
1082 return bdi; in bdi_get_by_id()
1085 int bdi_register_va(struct backing_dev_info *bdi, const char *fmt, va_list args) in bdi_register_va() argument
1090 if (bdi->dev) /* The driver needs to use separate queues per device */ in bdi_register_va()
1093 vsnprintf(bdi->dev_name, sizeof(bdi->dev_name), fmt, args); in bdi_register_va()
1094 dev = device_create(&bdi_class, NULL, MKDEV(0, 0), bdi, bdi->dev_name); in bdi_register_va()
1098 cgwb_bdi_register(bdi); in bdi_register_va()
1099 bdi->dev = dev; in bdi_register_va()
1101 bdi_debug_register(bdi, dev_name(dev)); in bdi_register_va()
1102 set_bit(WB_registered, &bdi->wb.state); in bdi_register_va()
1106 bdi->id = ++bdi_id_cursor; in bdi_register_va()
1108 p = bdi_lookup_rb_node(bdi->id, &parent); in bdi_register_va()
1109 rb_link_node(&bdi->rb_node, parent, p); in bdi_register_va()
1110 rb_insert_color(&bdi->rb_node, &bdi_tree); in bdi_register_va()
1112 list_add_tail_rcu(&bdi->bdi_list, &bdi_list); in bdi_register_va()
1116 trace_writeback_bdi_register(bdi); in bdi_register_va()
1120 int bdi_register(struct backing_dev_info *bdi, const char *fmt, ...) in bdi_register() argument
1126 ret = bdi_register_va(bdi, fmt, args); in bdi_register()
1132 void bdi_set_owner(struct backing_dev_info *bdi, struct device *owner) in bdi_set_owner() argument
1134 WARN_ON_ONCE(bdi->owner); in bdi_set_owner()
1135 bdi->owner = owner; in bdi_set_owner()
1142 static void bdi_remove_from_list(struct backing_dev_info *bdi) in bdi_remove_from_list() argument
1145 rb_erase(&bdi->rb_node, &bdi_tree); in bdi_remove_from_list()
1146 list_del_rcu(&bdi->bdi_list); in bdi_remove_from_list()
1152 void bdi_unregister(struct backing_dev_info *bdi) in bdi_unregister() argument
1154 del_timer_sync(&bdi->laptop_mode_wb_timer); in bdi_unregister()
1157 bdi_remove_from_list(bdi); in bdi_unregister()
1158 wb_shutdown(&bdi->wb); in bdi_unregister()
1159 cgwb_bdi_unregister(bdi); in bdi_unregister()
1165 if (bdi->min_ratio) in bdi_unregister()
1166 bdi_set_min_ratio(bdi, 0); in bdi_unregister()
1168 if (bdi->dev) { in bdi_unregister()
1169 bdi_debug_unregister(bdi); in bdi_unregister()
1170 device_unregister(bdi->dev); in bdi_unregister()
1171 bdi->dev = NULL; in bdi_unregister()
1174 if (bdi->owner) { in bdi_unregister()
1175 put_device(bdi->owner); in bdi_unregister()
1176 bdi->owner = NULL; in bdi_unregister()
1183 struct backing_dev_info *bdi = in release_bdi() local
1186 WARN_ON_ONCE(test_bit(WB_registered, &bdi->wb.state)); in release_bdi()
1187 WARN_ON_ONCE(bdi->dev); in release_bdi()
1188 wb_exit(&bdi->wb); in release_bdi()
1189 kfree(bdi); in release_bdi()
1192 void bdi_put(struct backing_dev_info *bdi) in bdi_put() argument
1194 kref_put(&bdi->refcnt, release_bdi); in bdi_put()
1208 return I_BDEV(inode)->bd_disk->bdi; in inode_to_bdi()
1214 const char *bdi_dev_name(struct backing_dev_info *bdi) in bdi_dev_name() argument
1216 if (!bdi || !bdi->dev) in bdi_dev_name()
1218 return bdi->dev_name; in bdi_dev_name()