Lines Matching refs:bdi
53 struct backing_dev_info *bdi = m->private; in bdi_debug_stats_show() local
54 struct bdi_writeback *wb = &bdi->wb; in bdi_debug_stats_show()
104 !list_empty(&bdi->bdi_list), bdi->wb.state); in bdi_debug_stats_show()
110 static void bdi_debug_register(struct backing_dev_info *bdi, const char *name) in bdi_debug_register() argument
112 bdi->debug_dir = debugfs_create_dir(name, bdi_debug_root); in bdi_debug_register()
114 debugfs_create_file("stats", 0444, bdi->debug_dir, bdi, in bdi_debug_register()
118 static void bdi_debug_unregister(struct backing_dev_info *bdi) in bdi_debug_unregister() argument
120 debugfs_remove_recursive(bdi->debug_dir); in bdi_debug_unregister()
126 static inline void bdi_debug_register(struct backing_dev_info *bdi, in bdi_debug_register() argument
130 static inline void bdi_debug_unregister(struct backing_dev_info *bdi) in bdi_debug_unregister() argument
139 struct backing_dev_info *bdi = dev_get_drvdata(dev); in read_ahead_kb_store() local
147 bdi->ra_pages = read_ahead_kb >> (PAGE_SHIFT - 10); in read_ahead_kb_store()
156 struct backing_dev_info *bdi = dev_get_drvdata(dev); \
162 BDI_SHOW(read_ahead_kb, K(bdi->ra_pages))
167 struct backing_dev_info *bdi = dev_get_drvdata(dev); in min_ratio_store() local
175 ret = bdi_set_min_ratio(bdi, ratio); in min_ratio_store()
181 BDI_SHOW(min_ratio, bdi->min_ratio / BDI_RATIO_SCALE)
186 struct backing_dev_info *bdi = dev_get_drvdata(dev); in min_ratio_fine_store() local
194 ret = bdi_set_min_ratio_no_scale(bdi, ratio); in min_ratio_fine_store()
200 BDI_SHOW(min_ratio_fine, bdi->min_ratio)
205 struct backing_dev_info *bdi = dev_get_drvdata(dev); in max_ratio_store() local
213 ret = bdi_set_max_ratio(bdi, ratio); in max_ratio_store()
219 BDI_SHOW(max_ratio, bdi->max_ratio / BDI_RATIO_SCALE)
224 struct backing_dev_info *bdi = dev_get_drvdata(dev); in max_ratio_fine_store() local
232 ret = bdi_set_max_ratio_no_scale(bdi, ratio); in max_ratio_fine_store()
238 BDI_SHOW(max_ratio_fine, bdi->max_ratio)
244 struct backing_dev_info *bdi = dev_get_drvdata(dev); in min_bytes_show() local
246 return sysfs_emit(buf, "%llu\n", bdi_get_min_bytes(bdi)); in min_bytes_show()
252 struct backing_dev_info *bdi = dev_get_drvdata(dev); in min_bytes_store() local
260 ret = bdi_set_min_bytes(bdi, bytes); in min_bytes_store()
272 struct backing_dev_info *bdi = dev_get_drvdata(dev); in max_bytes_show() local
274 return sysfs_emit(buf, "%llu\n", bdi_get_max_bytes(bdi)); in max_bytes_show()
280 struct backing_dev_info *bdi = dev_get_drvdata(dev); in max_bytes_store() local
288 ret = bdi_set_max_bytes(bdi, bytes); in max_bytes_store()
309 struct backing_dev_info *bdi = dev_get_drvdata(dev); in strict_limit_store() local
317 ret = bdi_set_strict_limit(bdi, strict_limit); in strict_limit_store()
327 struct backing_dev_info *bdi = dev_get_drvdata(dev); in strict_limit_show() local
330 !!(bdi->capabilities & BDI_CAP_STRICTLIMIT)); in strict_limit_show()
409 static int wb_init(struct bdi_writeback *wb, struct backing_dev_info *bdi, in wb_init() argument
416 wb->bdi = bdi; in wb_init()
514 struct backing_dev_info *bdi = wb->bdi; in cgwb_release_workfn() local
516 mutex_lock(&wb->bdi->cgwb_release_mutex); in cgwb_release_workfn()
521 mutex_unlock(&wb->bdi->cgwb_release_mutex); in cgwb_release_workfn()
534 bdi_put(bdi); in cgwb_release_workfn()
550 WARN_ON(!radix_tree_delete(&wb->bdi->cgwb_tree, wb->memcg_css->id)); in cgwb_kill()
564 static int cgwb_create(struct backing_dev_info *bdi, in cgwb_create() argument
581 wb = radix_tree_lookup(&bdi->cgwb_tree, memcg_css->id); in cgwb_create()
597 ret = wb_init(wb, bdi, gfp); in cgwb_create()
614 bdi_get(bdi); 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()
646 bdi_put(bdi); in cgwb_create()
682 struct bdi_writeback *wb_get_lookup(struct backing_dev_info *bdi, in wb_get_lookup() argument
688 return &bdi->wb; in wb_get_lookup()
691 wb = radix_tree_lookup(&bdi->cgwb_tree, memcg_css->id); in wb_get_lookup()
715 struct bdi_writeback *wb_get_create(struct backing_dev_info *bdi, in wb_get_create() argument
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()
733 static int cgwb_bdi_init(struct backing_dev_info *bdi) in cgwb_bdi_init() argument
737 INIT_RADIX_TREE(&bdi->cgwb_tree, GFP_ATOMIC); in cgwb_bdi_init()
738 mutex_init(&bdi->cgwb_release_mutex); in cgwb_bdi_init()
739 init_rwsem(&bdi->wb_switch_rwsem); in cgwb_bdi_init()
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()
749 static void cgwb_bdi_unregister(struct backing_dev_info *bdi) in cgwb_bdi_unregister() argument
755 WARN_ON(test_bit(WB_registered, &bdi->wb.state)); in cgwb_bdi_unregister()
758 radix_tree_for_each_slot(slot, &bdi->cgwb_tree, &iter, 0) in cgwb_bdi_unregister()
762 mutex_lock(&bdi->cgwb_release_mutex); in cgwb_bdi_unregister()
764 while (!list_empty(&bdi->wb_list)) { in cgwb_bdi_unregister()
765 wb = list_first_entry(&bdi->wb_list, struct bdi_writeback, in cgwb_bdi_unregister()
772 mutex_unlock(&bdi->cgwb_release_mutex); in cgwb_bdi_unregister()
861 static void cgwb_bdi_register(struct backing_dev_info *bdi) in cgwb_bdi_register() argument
864 list_add_tail_rcu(&bdi->wb.bdi_node, &bdi->wb_list); in cgwb_bdi_register()
885 static int cgwb_bdi_init(struct backing_dev_info *bdi) in cgwb_bdi_init() argument
887 return wb_init(&bdi->wb, bdi, GFP_KERNEL); in cgwb_bdi_init()
890 static void cgwb_bdi_unregister(struct backing_dev_info *bdi) { } in cgwb_bdi_unregister() argument
892 static void cgwb_bdi_register(struct backing_dev_info *bdi) in cgwb_bdi_register() argument
894 list_add_tail_rcu(&bdi->wb.bdi_node, &bdi->wb_list); in cgwb_bdi_register()
904 int bdi_init(struct backing_dev_info *bdi) in bdi_init() argument
906 bdi->dev = NULL; in bdi_init()
908 kref_init(&bdi->refcnt); in bdi_init()
909 bdi->min_ratio = 0; in bdi_init()
910 bdi->max_ratio = 100 * BDI_RATIO_SCALE; in bdi_init()
911 bdi->max_prop_frac = FPROP_FRAC_BASE; in bdi_init()
912 INIT_LIST_HEAD(&bdi->bdi_list); in bdi_init()
913 INIT_LIST_HEAD(&bdi->wb_list); in bdi_init()
914 init_waitqueue_head(&bdi->wb_waitq); in bdi_init()
916 return cgwb_bdi_init(bdi); in bdi_init()
921 struct backing_dev_info *bdi; in bdi_alloc() local
923 bdi = kzalloc_node(sizeof(*bdi), GFP_KERNEL, node_id); in bdi_alloc()
924 if (!bdi) in bdi_alloc()
927 if (bdi_init(bdi)) { in bdi_alloc()
928 kfree(bdi); in bdi_alloc()
931 bdi->capabilities = BDI_CAP_WRITEBACK | BDI_CAP_WRITEBACK_ACCT; in bdi_alloc()
932 bdi->ra_pages = VM_READAHEAD_PAGES; in bdi_alloc()
933 bdi->io_pages = VM_READAHEAD_PAGES; in bdi_alloc()
934 timer_setup(&bdi->laptop_mode_wb_timer, laptop_mode_timer_fn, 0); in bdi_alloc()
935 return bdi; in bdi_alloc()
943 struct backing_dev_info *bdi; in bdi_lookup_rb_node() local
949 bdi = rb_entry(parent, struct backing_dev_info, rb_node); in bdi_lookup_rb_node()
951 if (bdi->id > id) in bdi_lookup_rb_node()
953 else if (bdi->id < id) in bdi_lookup_rb_node()
973 struct backing_dev_info *bdi = NULL; in bdi_get_by_id() local
979 bdi = rb_entry(*p, struct backing_dev_info, rb_node); in bdi_get_by_id()
980 bdi_get(bdi); in bdi_get_by_id()
984 return bdi; in bdi_get_by_id()
987 int bdi_register_va(struct backing_dev_info *bdi, const char *fmt, va_list args) in bdi_register_va() argument
992 if (bdi->dev) /* The driver needs to use separate queues per device */ in bdi_register_va()
995 vsnprintf(bdi->dev_name, sizeof(bdi->dev_name), fmt, args); in bdi_register_va()
996 dev = device_create(bdi_class, NULL, MKDEV(0, 0), bdi, bdi->dev_name); in bdi_register_va()
1000 cgwb_bdi_register(bdi); in bdi_register_va()
1001 bdi->dev = dev; in bdi_register_va()
1003 bdi_debug_register(bdi, dev_name(dev)); in bdi_register_va()
1004 set_bit(WB_registered, &bdi->wb.state); in bdi_register_va()
1008 bdi->id = ++bdi_id_cursor; in bdi_register_va()
1010 p = bdi_lookup_rb_node(bdi->id, &parent); in bdi_register_va()
1011 rb_link_node(&bdi->rb_node, parent, p); in bdi_register_va()
1012 rb_insert_color(&bdi->rb_node, &bdi_tree); in bdi_register_va()
1014 list_add_tail_rcu(&bdi->bdi_list, &bdi_list); in bdi_register_va()
1018 trace_writeback_bdi_register(bdi); in bdi_register_va()
1022 int bdi_register(struct backing_dev_info *bdi, const char *fmt, ...) in bdi_register() argument
1028 ret = bdi_register_va(bdi, fmt, args); in bdi_register()
1034 void bdi_set_owner(struct backing_dev_info *bdi, struct device *owner) in bdi_set_owner() argument
1036 WARN_ON_ONCE(bdi->owner); in bdi_set_owner()
1037 bdi->owner = owner; in bdi_set_owner()
1044 static void bdi_remove_from_list(struct backing_dev_info *bdi) in bdi_remove_from_list() argument
1047 rb_erase(&bdi->rb_node, &bdi_tree); in bdi_remove_from_list()
1048 list_del_rcu(&bdi->bdi_list); in bdi_remove_from_list()
1054 void bdi_unregister(struct backing_dev_info *bdi) in bdi_unregister() argument
1056 del_timer_sync(&bdi->laptop_mode_wb_timer); in bdi_unregister()
1059 bdi_remove_from_list(bdi); in bdi_unregister()
1060 wb_shutdown(&bdi->wb); in bdi_unregister()
1061 cgwb_bdi_unregister(bdi); in bdi_unregister()
1067 if (bdi->min_ratio) in bdi_unregister()
1068 bdi_set_min_ratio(bdi, 0); in bdi_unregister()
1070 if (bdi->dev) { in bdi_unregister()
1071 bdi_debug_unregister(bdi); in bdi_unregister()
1072 device_unregister(bdi->dev); in bdi_unregister()
1073 bdi->dev = NULL; in bdi_unregister()
1076 if (bdi->owner) { in bdi_unregister()
1077 put_device(bdi->owner); in bdi_unregister()
1078 bdi->owner = NULL; in bdi_unregister()
1085 struct backing_dev_info *bdi = in release_bdi() local
1088 WARN_ON_ONCE(test_bit(WB_registered, &bdi->wb.state)); in release_bdi()
1089 WARN_ON_ONCE(bdi->dev); in release_bdi()
1090 wb_exit(&bdi->wb); in release_bdi()
1091 kfree(bdi); in release_bdi()
1094 void bdi_put(struct backing_dev_info *bdi) in bdi_put() argument
1096 kref_put(&bdi->refcnt, release_bdi); in bdi_put()
1110 return I_BDEV(inode)->bd_disk->bdi; in inode_to_bdi()
1116 const char *bdi_dev_name(struct backing_dev_info *bdi) in bdi_dev_name() argument
1118 if (!bdi || !bdi->dev) in bdi_dev_name()
1120 return bdi->dev_name; in bdi_dev_name()