100 static void save_error_info(struct btrfs_fs_info *fs_info)  in save_error_info()  argument
106 	set_bit(BTRFS_FS_STATE_ERROR, &fs_info->fs_state);  in save_error_info()
110 static void btrfs_handle_error(struct btrfs_fs_info *fs_info)  in btrfs_handle_error()  argument
112 	struct super_block *sb = fs_info->sb;  in btrfs_handle_error()
117 	if (test_bit(BTRFS_FS_STATE_ERROR, &fs_info->fs_state)) {  in btrfs_handle_error()
119 		btrfs_info(fs_info, "forced readonly");  in btrfs_handle_error()
138 void __btrfs_std_error(struct btrfs_fs_info *fs_info, const char *function,  in __btrfs_std_error()  argument
141 	struct super_block *sb = fs_info->sb;  in __btrfs_std_error()
170 	save_error_info(fs_info);  in __btrfs_std_error()
172 		btrfs_handle_error(fs_info);  in __btrfs_std_error()
186 void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...)  in btrfs_printk()  argument
188 	struct super_block *sb = fs_info->sb;  in btrfs_printk()
217 void __btrfs_std_error(struct btrfs_fs_info *fs_info, const char *function,  in __btrfs_std_error()  argument
220 	struct super_block *sb = fs_info->sb;  in __btrfs_std_error()
231 		save_error_info(fs_info);  in __btrfs_std_error()
232 		btrfs_handle_error(fs_info);  in __btrfs_std_error()
258 				&root->fs_info->fs_state)) {  in __btrfs_abort_transaction()
269 		btrfs_warn(root->fs_info,  in __btrfs_abort_transaction()
276 	wake_up(&root->fs_info->transaction_wait);  in __btrfs_abort_transaction()
277 	wake_up(&root->fs_info->transaction_blocked_wait);  in __btrfs_abort_transaction()
278 	__btrfs_std_error(root->fs_info, function, line, errno, NULL);  in __btrfs_abort_transaction()
284 void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function,  in __btrfs_panic()  argument
292 	if (fs_info)  in __btrfs_panic()
293 		s_id = fs_info->sb->s_id;  in __btrfs_panic()
299 	if (fs_info && (fs_info->mount_opt & BTRFS_MOUNT_PANIC_ON_FATAL_ERROR))  in __btrfs_panic()
303 	btrfs_crit(fs_info, "panic in %s:%d: %pV (errno=%d %s)",  in __btrfs_panic()
390 	struct btrfs_fs_info *info = root->fs_info;  in btrfs_parse_options()
399 	cache_gen = btrfs_super_cache_generation(root->fs_info->super_copy);  in btrfs_parse_options()
424 			btrfs_info(root->fs_info, "allowing degraded mounts");  in btrfs_parse_options()
443 					btrfs_info(root->fs_info, "setting datasum, datacow enabled");  in btrfs_parse_options()
445 					btrfs_info(root->fs_info, "setting datasum");  in btrfs_parse_options()
454 					btrfs_info(root->fs_info,  in btrfs_parse_options()
457 					btrfs_info(root->fs_info, "setting nodatacow");  in btrfs_parse_options()
506 					btrfs_info(root->fs_info,  in btrfs_parse_options()
562 				btrfs_info(root->fs_info, "max_inline at %llu",  in btrfs_parse_options()
576 				btrfs_info(root->fs_info, "allocations start at %llu",  in btrfs_parse_options()
585 			root->fs_info->sb->s_flags |= MS_POSIXACL;  in btrfs_parse_options()
588 			btrfs_err(root->fs_info,  in btrfs_parse_options()
594 			root->fs_info->sb->s_flags &= ~MS_POSIXACL;  in btrfs_parse_options()
618 				btrfs_info(root->fs_info, "metadata ratio %d",  in btrfs_parse_options()
674 			btrfs_info(root->fs_info, "enabling auto recovery");  in btrfs_parse_options()
682 			btrfs_info(root->fs_info,  in btrfs_parse_options()
689 			btrfs_info(root->fs_info, "enabling check integrity");  in btrfs_parse_options()
698 				btrfs_info(root->fs_info, "check_integrity_print_mask 0x%x",  in btrfs_parse_options()
709 			btrfs_err(root->fs_info,  in btrfs_parse_options()
730 				btrfs_err(root->fs_info, "invalid commit interval");  in btrfs_parse_options()
736 					btrfs_warn(root->fs_info, "excessive commit interval %d",  in btrfs_parse_options()
741 				btrfs_info(root->fs_info, "using default commit interval %ds",  in btrfs_parse_options()
747 			btrfs_info(root->fs_info, "unrecognized mount option '%s'", p);  in btrfs_parse_options()
756 		btrfs_info(root->fs_info, "disk space caching is enabled");  in btrfs_parse_options()
847 	struct btrfs_fs_info *fs_info = btrfs_sb(sb);  in get_default_root()  local
848 	struct btrfs_root *root = fs_info->tree_root;  in get_default_root()
878 	dir_id = btrfs_super_root_dir(fs_info->super_copy);  in get_default_root()
892 		new_root = fs_info->fs_root;  in get_default_root()
900 	new_root = btrfs_read_fs_root_no_name(fs_info, &location);  in get_default_root()
906 		down_read(&fs_info->cleanup_work_sem);  in get_default_root()
908 		up_read(&fs_info->cleanup_work_sem);  in get_default_root()
941 	struct btrfs_fs_info *fs_info = btrfs_sb(sb);  in btrfs_fill_super()  local
965 	inode = btrfs_iget(sb, &key, fs_info->fs_root, NULL);  in btrfs_fill_super()
983 	close_ctree(fs_info->tree_root);  in btrfs_fill_super()
990 	struct btrfs_fs_info *fs_info = btrfs_sb(sb);  in btrfs_sync_fs()  local
991 	struct btrfs_root *root = fs_info->tree_root;  in btrfs_sync_fs()
996 		filemap_flush(fs_info->btree_inode->i_mapping);  in btrfs_sync_fs()
1000 	btrfs_wait_ordered_roots(fs_info, -1);  in btrfs_sync_fs()
1010 			if (fs_info->pending_changes == 0)  in btrfs_sync_fs()
1073 	if (!(root->fs_info->sb->s_flags & MS_POSIXACL))  in btrfs_show_options()
1117 	struct btrfs_fs_info *fs_info = btrfs_sb(s);  in btrfs_test_super()  local
1119 	return fs_info->fs_devices == p->fs_devices;  in btrfs_test_super()
1264 static int setup_security_options(struct btrfs_fs_info *fs_info,  in setup_security_options()  argument
1279 	if (!fs_info->security_opts.num_mnt_opts) {  in setup_security_options()
1281 		memcpy(&fs_info->security_opts, sec_opts, sizeof(*sec_opts));  in setup_security_options()
1308 	struct btrfs_fs_info *fs_info = NULL;  in btrfs_mount()  local
1349 	fs_info = kzalloc(sizeof(struct btrfs_fs_info), GFP_NOFS);  in btrfs_mount()
1350 	if (!fs_info) {  in btrfs_mount()
1355 	fs_info->fs_devices = fs_devices;  in btrfs_mount()
1357 	fs_info->super_copy = kzalloc(BTRFS_SUPER_INFO_SIZE, GFP_NOFS);  in btrfs_mount()
1358 	fs_info->super_for_commit = kzalloc(BTRFS_SUPER_INFO_SIZE, GFP_NOFS);  in btrfs_mount()
1359 	security_init_mnt_opts(&fs_info->security_opts);  in btrfs_mount()
1360 	if (!fs_info->super_copy || !fs_info->super_for_commit) {  in btrfs_mount()
1376 		 fs_info);  in btrfs_mount()
1384 		free_fs_info(fs_info);  in btrfs_mount()
1403 	fs_info = btrfs_sb(s);  in btrfs_mount()
1404 	error = setup_security_options(fs_info, s, &new_sec_opts);  in btrfs_mount()
1416 	free_fs_info(fs_info);  in btrfs_mount()
1422 static void btrfs_resize_thread_pool(struct btrfs_fs_info *fs_info,  in btrfs_resize_thread_pool()  argument
1428 	fs_info->thread_pool_size = new_pool_size;  in btrfs_resize_thread_pool()
1430 	btrfs_info(fs_info, "resize thread pool %d -> %d",  in btrfs_resize_thread_pool()
1433 	btrfs_workqueue_set_max(fs_info->workers, new_pool_size);  in btrfs_resize_thread_pool()
1434 	btrfs_workqueue_set_max(fs_info->delalloc_workers, new_pool_size);  in btrfs_resize_thread_pool()
1435 	btrfs_workqueue_set_max(fs_info->submit_workers, new_pool_size);  in btrfs_resize_thread_pool()
1436 	btrfs_workqueue_set_max(fs_info->caching_workers, new_pool_size);  in btrfs_resize_thread_pool()
1437 	btrfs_workqueue_set_max(fs_info->endio_workers, new_pool_size);  in btrfs_resize_thread_pool()
1438 	btrfs_workqueue_set_max(fs_info->endio_meta_workers, new_pool_size);  in btrfs_resize_thread_pool()
1439 	btrfs_workqueue_set_max(fs_info->endio_meta_write_workers,  in btrfs_resize_thread_pool()
1441 	btrfs_workqueue_set_max(fs_info->endio_write_workers, new_pool_size);  in btrfs_resize_thread_pool()
1442 	btrfs_workqueue_set_max(fs_info->endio_freespace_worker, new_pool_size);  in btrfs_resize_thread_pool()
1443 	btrfs_workqueue_set_max(fs_info->delayed_workers, new_pool_size);  in btrfs_resize_thread_pool()
1444 	btrfs_workqueue_set_max(fs_info->readahead_workers, new_pool_size);  in btrfs_resize_thread_pool()
1445 	btrfs_workqueue_set_max(fs_info->scrub_wr_completion_workers,  in btrfs_resize_thread_pool()
1449 static inline void btrfs_remount_prepare(struct btrfs_fs_info *fs_info)  in btrfs_remount_prepare()  argument
1451 	set_bit(BTRFS_FS_STATE_REMOUNTING, &fs_info->fs_state);  in btrfs_remount_prepare()
1454 static inline void btrfs_remount_begin(struct btrfs_fs_info *fs_info,  in btrfs_remount_begin()  argument
1458 	    (!btrfs_raw_test_opt(fs_info->mount_opt, AUTO_DEFRAG) ||  in btrfs_remount_begin()
1461 		wait_event(fs_info->transaction_wait,  in btrfs_remount_begin()
1462 			   (atomic_read(&fs_info->defrag_running) == 0));  in btrfs_remount_begin()
1464 			sync_filesystem(fs_info->sb);  in btrfs_remount_begin()
1468 static inline void btrfs_remount_cleanup(struct btrfs_fs_info *fs_info,  in btrfs_remount_cleanup()  argument
1476 	    (!btrfs_raw_test_opt(fs_info->mount_opt, AUTO_DEFRAG) ||  in btrfs_remount_cleanup()
1477 	     (fs_info->sb->s_flags & MS_RDONLY))) {  in btrfs_remount_cleanup()
1478 		btrfs_cleanup_defrag_inodes(fs_info);  in btrfs_remount_cleanup()
1481 	clear_bit(BTRFS_FS_STATE_REMOUNTING, &fs_info->fs_state);  in btrfs_remount_cleanup()
1486 	struct btrfs_fs_info *fs_info = btrfs_sb(sb);  in btrfs_remount()  local
1487 	struct btrfs_root *root = fs_info->tree_root;  in btrfs_remount()
1489 	unsigned long old_opts = fs_info->mount_opt;  in btrfs_remount()
1490 	unsigned long old_compress_type = fs_info->compress_type;  in btrfs_remount()
1491 	u64 old_max_inline = fs_info->max_inline;  in btrfs_remount()
1492 	u64 old_alloc_start = fs_info->alloc_start;  in btrfs_remount()
1493 	int old_thread_pool_size = fs_info->thread_pool_size;  in btrfs_remount()
1494 	unsigned int old_metadata_ratio = fs_info->metadata_ratio;  in btrfs_remount()
1498 	btrfs_remount_prepare(fs_info);  in btrfs_remount()
1507 		ret = setup_security_options(fs_info, sb,  in btrfs_remount()
1521 	btrfs_remount_begin(fs_info, old_opts, *flags);  in btrfs_remount()
1522 	btrfs_resize_thread_pool(fs_info,  in btrfs_remount()
1523 		fs_info->thread_pool_size, old_thread_pool_size);  in btrfs_remount()
1533 		cancel_work_sync(&fs_info->async_reclaim_work);  in btrfs_remount()
1536 		down(&fs_info->uuid_tree_rescan_sem);  in btrfs_remount()
1538 		up(&fs_info->uuid_tree_rescan_sem);  in btrfs_remount()
1542 		btrfs_dev_replace_suspend_for_unmount(fs_info);  in btrfs_remount()
1543 		btrfs_scrub_cancel(fs_info);  in btrfs_remount()
1544 		btrfs_pause_balance(fs_info);  in btrfs_remount()
1550 		if (test_bit(BTRFS_FS_STATE_ERROR, &root->fs_info->fs_state)) {  in btrfs_remount()
1551 			btrfs_err(fs_info,  in btrfs_remount()
1556 		if (fs_info->fs_devices->rw_devices == 0) {  in btrfs_remount()
1561 		if (fs_info->fs_devices->missing_devices >  in btrfs_remount()
1562 		     fs_info->num_tolerated_disk_barrier_failures &&  in btrfs_remount()
1564 			btrfs_warn(fs_info,  in btrfs_remount()
1570 		if (btrfs_super_log_root(fs_info->super_copy) != 0) {  in btrfs_remount()
1575 		ret = btrfs_cleanup_fs_roots(fs_info);  in btrfs_remount()
1580 		mutex_lock(&fs_info->cleaner_mutex);  in btrfs_remount()
1582 		mutex_unlock(&fs_info->cleaner_mutex);  in btrfs_remount()
1586 		ret = btrfs_resume_balance_async(fs_info);  in btrfs_remount()
1590 		ret = btrfs_resume_dev_replace_async(fs_info);  in btrfs_remount()
1592 			btrfs_warn(fs_info, "failed to resume dev_replace");  in btrfs_remount()
1596 		if (!fs_info->uuid_root) {  in btrfs_remount()
1597 			btrfs_info(fs_info, "creating UUID tree");  in btrfs_remount()
1598 			ret = btrfs_create_uuid_tree(fs_info);  in btrfs_remount()
1600 				btrfs_warn(fs_info, "failed to create the UUID tree %d", ret);  in btrfs_remount()
1607 	wake_up_process(fs_info->transaction_kthread);  in btrfs_remount()
1608 	btrfs_remount_cleanup(fs_info, old_opts);  in btrfs_remount()
1616 	fs_info->mount_opt = old_opts;  in btrfs_remount()
1617 	fs_info->compress_type = old_compress_type;  in btrfs_remount()
1618 	fs_info->max_inline = old_max_inline;  in btrfs_remount()
1619 	mutex_lock(&fs_info->chunk_mutex);  in btrfs_remount()
1620 	fs_info->alloc_start = old_alloc_start;  in btrfs_remount()
1621 	mutex_unlock(&fs_info->chunk_mutex);  in btrfs_remount()
1622 	btrfs_resize_thread_pool(fs_info,  in btrfs_remount()
1623 		old_thread_pool_size, fs_info->thread_pool_size);  in btrfs_remount()
1624 	fs_info->metadata_ratio = old_metadata_ratio;  in btrfs_remount()
1625 	btrfs_remount_cleanup(fs_info, old_opts);  in btrfs_remount()
1661 	struct btrfs_fs_info *fs_info = root->fs_info;  in btrfs_calc_avail_data_space()  local
1663 	struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;  in btrfs_calc_avail_data_space()
1678 	nr_devices = fs_info->fs_devices->open_devices;  in btrfs_calc_avail_data_space()
1681 		nr_devices = fs_info->fs_devices->open_devices;  in btrfs_calc_avail_data_space()
1712 	if (fs_info->alloc_start)  in btrfs_calc_avail_data_space()
1737 		if (fs_info->alloc_start &&  in btrfs_calc_avail_data_space()
1738 		    fs_info->alloc_start + BTRFS_STRIPE_LEN <=  in btrfs_calc_avail_data_space()
1741 			skip_space = max(fs_info->alloc_start, skip_space);  in btrfs_calc_avail_data_space()
1782 	if (fs_info->alloc_start)  in btrfs_calc_avail_data_space()
1832 	struct btrfs_fs_info *fs_info = btrfs_sb(dentry->d_sb);  in btrfs_statfs()  local
1833 	struct btrfs_super_block *disk_super = fs_info->super_copy;  in btrfs_statfs()
1834 	struct list_head *head = &fs_info->space_info;  in btrfs_statfs()
1840 	__be32 *fsid = (__be32 *)fs_info->fsid;  in btrfs_statfs()
1842 	struct btrfs_block_rsv *block_rsv = &fs_info->global_block_rsv;  in btrfs_statfs()
1888 	ret = btrfs_calc_avail_data_space(fs_info->tree_root, &total_free_data);  in btrfs_statfs()
1930 	struct btrfs_fs_info *fs_info = btrfs_sb(sb);  in btrfs_kill_super()  local
1932 	free_fs_info(fs_info);  in btrfs_kill_super()
2007 	struct btrfs_fs_info *fs_info = btrfs_sb(root->d_sb);  in btrfs_show_devname()  local
2013 	mutex_lock(&fs_info->fs_devices->device_list_mutex);  in btrfs_show_devname()
2014 	cur_devices = fs_info->fs_devices;  in btrfs_show_devname()
2036 	mutex_unlock(&fs_info->fs_devices->device_list_mutex);  in btrfs_show_devname()