99 void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function,  in __btrfs_handle_fs_error()  argument
102 	struct super_block *sb = fs_info->sb;  in __btrfs_handle_fs_error()
137 	set_bit(BTRFS_FS_STATE_ERROR, &fs_info->fs_state);  in __btrfs_handle_fs_error()
148 	btrfs_info(fs_info, "forced readonly");  in __btrfs_handle_fs_error()
187 void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...)  in btrfs_printk()  argument
215 			fs_info ? fs_info->sb->s_id : "<unknown>", &vaf);  in btrfs_printk()
239 	struct btrfs_fs_info *fs_info = trans->fs_info;  in __btrfs_abort_transaction()  local
248 		btrfs_warn(fs_info,  in __btrfs_abort_transaction()
255 	wake_up(&fs_info->transaction_wait);  in __btrfs_abort_transaction()
256 	wake_up(&fs_info->transaction_blocked_wait);  in __btrfs_abort_transaction()
257 	__btrfs_handle_fs_error(fs_info, function, line, errno, NULL);  in __btrfs_abort_transaction()
264 void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function,  in __btrfs_panic()  argument
272 	if (fs_info)  in __btrfs_panic()
273 		s_id = fs_info->sb->s_id;  in __btrfs_panic()
279 	if (fs_info && (btrfs_test_opt(fs_info, PANIC_ON_FATAL_ERROR)))  in __btrfs_panic()
283 	btrfs_crit(fs_info, "panic in %s:%d: %pV (errno=%d %s)",  in __btrfs_panic()
999 static char *get_subvol_name_from_objectid(struct btrfs_fs_info *fs_info,  in get_subvol_name_from_objectid()  argument
1002 	struct btrfs_root *root = fs_info->tree_root;  in get_subvol_name_from_objectid()
1071 		fs_root = btrfs_read_fs_root_no_name(fs_info, &key);  in get_subvol_name_from_objectid()
1135 static int get_default_subvol_objectid(struct btrfs_fs_info *fs_info, u64 *objectid)  in get_default_subvol_objectid()  argument
1137 	struct btrfs_root *root = fs_info->tree_root;  in get_default_subvol_objectid()
1153 	dir_id = btrfs_super_root_dir(fs_info->super_copy);  in get_default_subvol_objectid()
1181 	struct btrfs_fs_info *fs_info = btrfs_sb(sb);  in btrfs_fill_super()  local
1200 		btrfs_err(fs_info, "super_setup_bdi failed");  in btrfs_fill_super()
1206 		btrfs_err(fs_info, "open_ctree failed");  in btrfs_fill_super()
1213 	inode = btrfs_iget(sb, &key, fs_info->fs_root, NULL);  in btrfs_fill_super()
1230 	close_ctree(fs_info);  in btrfs_fill_super()
1237 	struct btrfs_fs_info *fs_info = btrfs_sb(sb);  in btrfs_sync_fs()  local
1238 	struct btrfs_root *root = fs_info->tree_root;  in btrfs_sync_fs()
1240 	trace_btrfs_sync_fs(fs_info, wait);  in btrfs_sync_fs()
1243 		filemap_flush(fs_info->btree_inode->i_mapping);  in btrfs_sync_fs()
1247 	btrfs_wait_ordered_roots(fs_info, U64_MAX, 0, (u64)-1);  in btrfs_sync_fs()
1257 			if (fs_info->pending_changes == 0)  in btrfs_sync_fs()
1373 	struct btrfs_fs_info *fs_info = btrfs_sb(s);  in btrfs_test_super()  local
1375 	return fs_info->fs_devices == p->fs_devices;  in btrfs_test_super()
1427 		struct btrfs_fs_info *fs_info = btrfs_sb(s);  in mount_subvol()  local
1433 			btrfs_err(fs_info, "'%s' is not a valid subvolume",  in mount_subvol()
1443 			btrfs_err(fs_info,  in mount_subvol()
1480 static int setup_security_options(struct btrfs_fs_info *fs_info,  in setup_security_options()  argument
1495 	if (!fs_info->security_opts.num_mnt_opts) {  in setup_security_options()
1497 		memcpy(&fs_info->security_opts, sec_opts, sizeof(*sec_opts));  in setup_security_options()
1524 	struct btrfs_fs_info *fs_info = NULL;  in btrfs_mount_root()  local
1545 	fs_info = kvzalloc(sizeof(struct btrfs_fs_info), GFP_KERNEL);  in btrfs_mount_root()
1546 	if (!fs_info) {  in btrfs_mount_root()
1551 	fs_info->super_copy = kzalloc(BTRFS_SUPER_INFO_SIZE, GFP_KERNEL);  in btrfs_mount_root()
1552 	fs_info->super_for_commit = kzalloc(BTRFS_SUPER_INFO_SIZE, GFP_KERNEL);  in btrfs_mount_root()
1553 	security_init_mnt_opts(&fs_info->security_opts);  in btrfs_mount_root()
1554 	if (!fs_info->super_copy || !fs_info->super_for_commit) {  in btrfs_mount_root()
1574 	fs_info->fs_devices = fs_devices;  in btrfs_mount_root()
1588 		 fs_info);  in btrfs_mount_root()
1596 		free_fs_info(fs_info);  in btrfs_mount_root()
1609 	fs_info = btrfs_sb(s);  in btrfs_mount_root()
1610 	error = setup_security_options(fs_info, s, &new_sec_opts);  in btrfs_mount_root()
1621 	free_fs_info(fs_info);  in btrfs_mount_root()
1705 static void btrfs_resize_thread_pool(struct btrfs_fs_info *fs_info,  in btrfs_resize_thread_pool()  argument
1711 	fs_info->thread_pool_size = new_pool_size;  in btrfs_resize_thread_pool()
1713 	btrfs_info(fs_info, "resize thread pool %d -> %d",  in btrfs_resize_thread_pool()
1716 	btrfs_workqueue_set_max(fs_info->workers, new_pool_size);  in btrfs_resize_thread_pool()
1717 	btrfs_workqueue_set_max(fs_info->delalloc_workers, new_pool_size);  in btrfs_resize_thread_pool()
1718 	btrfs_workqueue_set_max(fs_info->submit_workers, new_pool_size);  in btrfs_resize_thread_pool()
1719 	btrfs_workqueue_set_max(fs_info->caching_workers, new_pool_size);  in btrfs_resize_thread_pool()
1720 	btrfs_workqueue_set_max(fs_info->endio_workers, new_pool_size);  in btrfs_resize_thread_pool()
1721 	btrfs_workqueue_set_max(fs_info->endio_meta_workers, new_pool_size);  in btrfs_resize_thread_pool()
1722 	btrfs_workqueue_set_max(fs_info->endio_meta_write_workers,  in btrfs_resize_thread_pool()
1724 	btrfs_workqueue_set_max(fs_info->endio_write_workers, new_pool_size);  in btrfs_resize_thread_pool()
1725 	btrfs_workqueue_set_max(fs_info->endio_freespace_worker, new_pool_size);  in btrfs_resize_thread_pool()
1726 	btrfs_workqueue_set_max(fs_info->delayed_workers, new_pool_size);  in btrfs_resize_thread_pool()
1727 	btrfs_workqueue_set_max(fs_info->readahead_workers, new_pool_size);  in btrfs_resize_thread_pool()
1728 	btrfs_workqueue_set_max(fs_info->scrub_wr_completion_workers,  in btrfs_resize_thread_pool()
1732 static inline void btrfs_remount_prepare(struct btrfs_fs_info *fs_info)  in btrfs_remount_prepare()  argument
1734 	set_bit(BTRFS_FS_STATE_REMOUNTING, &fs_info->fs_state);  in btrfs_remount_prepare()
1737 static inline void btrfs_remount_begin(struct btrfs_fs_info *fs_info,  in btrfs_remount_begin()  argument
1741 	    (!btrfs_raw_test_opt(fs_info->mount_opt, AUTO_DEFRAG) ||  in btrfs_remount_begin()
1744 		wait_event(fs_info->transaction_wait,  in btrfs_remount_begin()
1745 			   (atomic_read(&fs_info->defrag_running) == 0));  in btrfs_remount_begin()
1747 			sync_filesystem(fs_info->sb);  in btrfs_remount_begin()
1751 static inline void btrfs_remount_cleanup(struct btrfs_fs_info *fs_info,  in btrfs_remount_cleanup()  argument
1759 	    (!btrfs_raw_test_opt(fs_info->mount_opt, AUTO_DEFRAG) || sb_rdonly(fs_info->sb))) {  in btrfs_remount_cleanup()
1760 		btrfs_cleanup_defrag_inodes(fs_info);  in btrfs_remount_cleanup()
1763 	clear_bit(BTRFS_FS_STATE_REMOUNTING, &fs_info->fs_state);  in btrfs_remount_cleanup()
1768 	struct btrfs_fs_info *fs_info = btrfs_sb(sb);  in btrfs_remount()  local
1769 	struct btrfs_root *root = fs_info->tree_root;  in btrfs_remount()
1771 	unsigned long old_opts = fs_info->mount_opt;  in btrfs_remount()
1772 	unsigned long old_compress_type = fs_info->compress_type;  in btrfs_remount()
1773 	u64 old_max_inline = fs_info->max_inline;  in btrfs_remount()
1774 	u32 old_thread_pool_size = fs_info->thread_pool_size;  in btrfs_remount()
1775 	u32 old_metadata_ratio = fs_info->metadata_ratio;  in btrfs_remount()
1779 	btrfs_remount_prepare(fs_info);  in btrfs_remount()
1788 		ret = setup_security_options(fs_info, sb,  in btrfs_remount()
1796 	ret = btrfs_parse_options(fs_info, data, *flags);  in btrfs_remount()
1800 	btrfs_remount_begin(fs_info, old_opts, *flags);  in btrfs_remount()
1801 	btrfs_resize_thread_pool(fs_info,  in btrfs_remount()
1802 		fs_info->thread_pool_size, old_thread_pool_size);  in btrfs_remount()
1812 		cancel_work_sync(&fs_info->async_reclaim_work);  in btrfs_remount()
1815 		down(&fs_info->uuid_tree_rescan_sem);  in btrfs_remount()
1817 		up(&fs_info->uuid_tree_rescan_sem);  in btrfs_remount()
1828 		btrfs_delete_unused_bgs(fs_info);  in btrfs_remount()
1830 		btrfs_dev_replace_suspend_for_unmount(fs_info);  in btrfs_remount()
1831 		btrfs_scrub_cancel(fs_info);  in btrfs_remount()
1832 		btrfs_pause_balance(fs_info);  in btrfs_remount()
1834 		ret = btrfs_commit_super(fs_info);  in btrfs_remount()
1838 		if (test_bit(BTRFS_FS_STATE_ERROR, &fs_info->fs_state)) {  in btrfs_remount()
1839 			btrfs_err(fs_info,  in btrfs_remount()
1844 		if (fs_info->fs_devices->rw_devices == 0) {  in btrfs_remount()
1849 		if (!btrfs_check_rw_degradable(fs_info, NULL)) {  in btrfs_remount()
1850 			btrfs_warn(fs_info,  in btrfs_remount()
1856 		if (btrfs_super_log_root(fs_info->super_copy) != 0) {  in btrfs_remount()
1861 		ret = btrfs_cleanup_fs_roots(fs_info);  in btrfs_remount()
1866 		mutex_lock(&fs_info->cleaner_mutex);  in btrfs_remount()
1868 		mutex_unlock(&fs_info->cleaner_mutex);  in btrfs_remount()
1872 		ret = btrfs_resume_balance_async(fs_info);  in btrfs_remount()
1876 		ret = btrfs_resume_dev_replace_async(fs_info);  in btrfs_remount()
1878 			btrfs_warn(fs_info, "failed to resume dev_replace");  in btrfs_remount()
1882 		btrfs_qgroup_rescan_resume(fs_info);  in btrfs_remount()
1884 		if (!fs_info->uuid_root) {  in btrfs_remount()
1885 			btrfs_info(fs_info, "creating UUID tree");  in btrfs_remount()
1886 			ret = btrfs_create_uuid_tree(fs_info);  in btrfs_remount()
1888 				btrfs_warn(fs_info,  in btrfs_remount()
1896 		set_bit(BTRFS_FS_OPEN, &fs_info->flags);  in btrfs_remount()
1899 	wake_up_process(fs_info->transaction_kthread);  in btrfs_remount()
1900 	btrfs_remount_cleanup(fs_info, old_opts);  in btrfs_remount()
1908 	fs_info->mount_opt = old_opts;  in btrfs_remount()
1909 	fs_info->compress_type = old_compress_type;  in btrfs_remount()
1910 	fs_info->max_inline = old_max_inline;  in btrfs_remount()
1911 	btrfs_resize_thread_pool(fs_info,  in btrfs_remount()
1912 		old_thread_pool_size, fs_info->thread_pool_size);  in btrfs_remount()
1913 	fs_info->metadata_ratio = old_metadata_ratio;  in btrfs_remount()
1914 	btrfs_remount_cleanup(fs_info, old_opts);  in btrfs_remount()
1948 static int btrfs_calc_avail_data_space(struct btrfs_fs_info *fs_info,  in btrfs_calc_avail_data_space()  argument
1952 	struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;  in btrfs_calc_avail_data_space()
1965 	nr_devices = fs_info->fs_devices->open_devices;  in btrfs_calc_avail_data_space()
1968 		nr_devices = fs_info->fs_devices->open_devices;  in btrfs_calc_avail_data_space()
1982 	type = btrfs_data_alloc_profile(fs_info);  in btrfs_calc_avail_data_space()
2085 	struct btrfs_fs_info *fs_info = btrfs_sb(dentry->d_sb);  in btrfs_statfs()  local
2086 	struct btrfs_super_block *disk_super = fs_info->super_copy;  in btrfs_statfs()
2087 	struct list_head *head = &fs_info->space_info;  in btrfs_statfs()
2093 	__be32 *fsid = (__be32 *)fs_info->fsid;  in btrfs_statfs()
2095 	struct btrfs_block_rsv *block_rsv = &fs_info->global_block_rsv;  in btrfs_statfs()
2146 	ret = btrfs_calc_avail_data_space(fs_info, &total_free_data);  in btrfs_statfs()
2188 	struct btrfs_fs_info *fs_info = btrfs_sb(sb);  in btrfs_kill_super()  local
2190 	free_fs_info(fs_info);  in btrfs_kill_super()
2272 	struct btrfs_fs_info *fs_info = btrfs_sb(sb);  in btrfs_freeze()  local
2273 	struct btrfs_root *root = fs_info->tree_root;  in btrfs_freeze()
2275 	set_bit(BTRFS_FS_FROZEN, &fs_info->flags);  in btrfs_freeze()
2294 	struct btrfs_fs_info *fs_info = btrfs_sb(sb);  in btrfs_unfreeze()  local
2296 	clear_bit(BTRFS_FS_FROZEN, &fs_info->flags);  in btrfs_unfreeze()
2302 	struct btrfs_fs_info *fs_info = btrfs_sb(root->d_sb);  in btrfs_show_devname()  local
2315 	cur_devices = fs_info->fs_devices;  in btrfs_show_devname()