fs/btrfs/disk-io.c

2078 	struct btrfs_super_block *disk_super = fs_info->super_copy;
2079 	u64 bytenr = btrfs_super_log_root(disk_super);
2080 	int level = btrfs_super_log_root_level(disk_super);
3105 	struct btrfs_super_block *disk_super = fs_info->super_copy;
3106 	u64 incompat = btrfs_super_incompat_flags(disk_super);
3107 	const u64 compat_ro = btrfs_super_compat_ro_flags(disk_super);
3139 	if (btrfs_super_nodesize(disk_super) > PAGE_SIZE)
3154 	if (compat_ro_unsupp && btrfs_super_log_root(disk_super) &&
3190 	btrfs_set_super_incompat_flags(disk_super, incompat);
3204 	struct btrfs_super_block *disk_super;
3236 	disk_super = btrfs_read_dev_super(fs_devices->latest_dev->bdev);
3237 	if (IS_ERR(disk_super)) {
3238 		ret = PTR_ERR(disk_super);
3242 	btrfs_info(fs_info, "first mount of filesystem %pU", disk_super->fsid);
3247 	csum_type = btrfs_super_csum_type(disk_super);
3252 		btrfs_release_disk_super(disk_super);
3256 	fs_info->csum_size = btrfs_super_csum_size(disk_super);
3260 		btrfs_release_disk_super(disk_super);
3268 	if (btrfs_check_super_csum(fs_info, disk_super)) {
3271 		btrfs_release_disk_super(disk_super);
3280 	memcpy(fs_info->super_copy, disk_super, sizeof(*fs_info->super_copy));
3281 	btrfs_release_disk_super(disk_super);
3283 	disk_super = fs_info->super_copy;
3295 	if (!btrfs_super_root(disk_super)) {
3302 	if (btrfs_super_flags(disk_super) & BTRFS_SUPER_FLAG_ERROR)
3306 	nodesize = btrfs_super_nodesize(disk_super);
3307 	sectorsize = btrfs_super_sectorsize(disk_super);
3358 	sb->s_bdi->ra_pages *= btrfs_super_num_devices(disk_super);
3374 	generation = btrfs_super_chunk_root_generation(disk_super);
3375 	level = btrfs_super_chunk_root_level(disk_super);
3376 	ret = load_super_root(chunk_root, btrfs_super_chunk_root(disk_super),
3432 	    fs_info->generation == btrfs_super_uuid_tree_generation(disk_super))
3527 	if (btrfs_super_log_root(disk_super) != 0 &&
3555 	     fs_info->generation != btrfs_super_uuid_tree_generation(disk_super))) {
3756 		struct btrfs_super_block *disk_super;
3792 		disk_super = page_address(page);
3793 		memcpy(disk_super, sb, BTRFS_SUPER_INFO_SIZE);