Commit 081db89b authored by David Sterba's avatar David Sterba
Browse files

btrfs: use raid_attr to get allowed profiles for balance conversion 



Iterate over the table and gather all allowed profiles for a given
number of devices, instead of open coding.

Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent fc9a2ac7

fs/btrfs/volumes.c

+5 −9
Original line number Diff line number Diff line
@@ -4047,6 +4047,7 @@ int btrfs_balance(struct btrfs_fs_info *fs_info, 
	u64 num_devices;

	unsigned seq;

	bool reducing_integrity;

	int i;



	if (btrfs_fs_closing(fs_info) ||

	    atomic_read(&fs_info->balance_pause_req) ||
@@ -4076,16 +4077,11 @@ int btrfs_balance(struct btrfs_fs_info *fs_info, 
	}



	num_devices = btrfs_num_devices(fs_info);

	allowed = 0;

	for (i = 0; i < ARRAY_SIZE(btrfs_raid_array); i++)

		if (num_devices >= btrfs_raid_array[i].devs_min)

			allowed |= btrfs_raid_array[i].bg_flag;



	allowed = BTRFS_AVAIL_ALLOC_BIT_SINGLE | BTRFS_BLOCK_GROUP_DUP;

	if (num_devices > 1)

		allowed |= (BTRFS_BLOCK_GROUP_RAID0 | BTRFS_BLOCK_GROUP_RAID1);

	if (num_devices >= 2)

		allowed |= BTRFS_BLOCK_GROUP_RAID5;

	if (num_devices >= 3)

		allowed |= BTRFS_BLOCK_GROUP_RAID6;

	if (num_devices > 3)

		allowed |= BTRFS_BLOCK_GROUP_RAID10;

	if (validate_convert_profile(&bctl->data, allowed)) {

		int index = btrfs_bg_flags_to_raid_index(bctl->data.target);