497 		fs_devices->num_devices++;  in device_list_add()
602 		fs_devices->num_devices++;  in clone_fs_devices()
657 		fs_devices->num_devices--;  in btrfs_close_extra_devices()
1556 	u64 num_devices;  in btrfs_rm_device()  local
1572 	num_devices = root->fs_info->fs_devices->num_devices;  in btrfs_rm_device()
1575 		WARN_ON(num_devices < 1);  in btrfs_rm_device()
1576 		num_devices--;  in btrfs_rm_device()
1580 	if ((all_avail & BTRFS_BLOCK_GROUP_RAID10) && num_devices <= 4) {  in btrfs_rm_device()
1585 	if ((all_avail & BTRFS_BLOCK_GROUP_RAID1) && num_devices <= 2) {  in btrfs_rm_device()
1694 	device->fs_devices->num_devices--;  in btrfs_rm_device()
1715 	num_devices = btrfs_super_num_devices(root->fs_info->super_copy) - 1;  in btrfs_rm_device()
1716 	btrfs_set_super_num_devices(root->fs_info->super_copy, num_devices);  in btrfs_rm_device()
1826 	fs_devices->num_devices--;  in btrfs_rm_dev_replace_remove_srcdev()
1851 	BUG_ON(!fs_devices->num_devices && !fs_devices->seeding);  in btrfs_rm_dev_replace_free_srcdev()
1854 	if (!fs_devices->num_devices) {  in btrfs_rm_dev_replace_free_srcdev()
1883 	fs_info->fs_devices->num_devices--;  in btrfs_destroy_dev_replace_tgtdev()
2003 	fs_devices->num_devices = 0;  in btrfs_prepare_sprout()
2193 	root->fs_info->fs_devices->num_devices++;  in btrfs_init_new_device()
2388 	fs_info->fs_devices->num_devices++;  in btrfs_init_dev_replace_tgtdev()
3350 	u64 num_devices;  in btrfs_balance()  local
3380 	num_devices = fs_info->fs_devices->num_devices;  in btrfs_balance()
3383 		BUG_ON(num_devices < 1);  in btrfs_balance()
3384 		num_devices--;  in btrfs_balance()
3388 	if (num_devices == 1)  in btrfs_balance()
3390 	else if (num_devices > 1)  in btrfs_balance()
3392 	if (num_devices > 2)  in btrfs_balance()
3394 	if (num_devices > 3)  in btrfs_balance()
5947 	fs_devices->num_devices++;  in add_missing_dev()
6225 			device->fs_devices->num_devices--;  in read_one_dev()
6226 			fs_devices->num_devices++;  in read_one_dev()