Re: [PATCH v3] efi: take size of partition entry from GPT header

[Davidlohr Bueso <dave@xxxxxxxxxxxx>]

On Wed, 12 Sep 2018, Eugene Korenevsky wrote:
> /**
>  * efi_partition(struct parsed_partitions *state)
>  * @state: disk parsed partitions
> @@ -704,32 +710,36 @@ int efi_partition(struct parsed_partitions *state)
>
> 	pr_debug("GUID Partition Table is valid!  Yea!\n");
>
> -	for (i = 0; i < le32_to_cpu(gpt->num_partition_entries) && i < state->limit-1; i++) {
> +	for (i = 0;
> +	     i < le32_to_cpu(gpt->num_partition_entries) && i < state->limit-1;
> +	     i++) {

Please rearrange this like:

      for (i = 0;  < le32_to_cpu(gpt->num_partition_entries) &&
      	      	      i < state->limit-1; i++)

> +		gpt_entry *pte = get_gpt_entry(gpt, ptes, i);
> 		struct partition_meta_info *info;
> 		unsigned label_count = 0;
> 		unsigned label_max;
> -		u64 start = le64_to_cpu(ptes[i].starting_lba);
> -		u64 size = le64_to_cpu(ptes[i].ending_lba) -
> -			   le64_to_cpu(ptes[i].starting_lba) + 1ULL;
> +		u64 start = le64_to_cpu(pte->starting_lba);
> +		u64 size = le64_to_cpu(pte->ending_lba) -
> +			   le64_to_cpu(pte->starting_lba) + 1ULL;
>
> -		if (!is_pte_valid(&ptes[i], last_lba(state->bdev)))
> +		if (!is_pte_valid(pte, last_lba(state->bdev)))
> 			continue;
>
> 		put_partition(state, i+1, start * ssz, size * ssz);
>
> 		/* If this is a RAID volume, tell md */
> -		if (!efi_guidcmp(ptes[i].partition_type_guid, PARTITION_LINUX_RAID_GUID))
> +		if (!efi_guidcmp(
> +		    pte->partition_type_guid, PARTITION_LINUX_RAID_GUID))

This is ugly. If you are worried about 80-chars, please do:

    	      	 if (!efi_guidcmp(pte->partition_type_guid,
				PARTITION_LINUX_RAID_GUID))

Thanks,
Davidlohr