diff options
| -rw-r--r-- | fs/btrfs/volumes.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 9b78e720c697..687eacbef9d6 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -6480,19 +6480,14 @@ static u64 calc_stripe_length(u64 type, u64 chunk_len, int num_stripes) { int index = btrfs_bg_flags_to_raid_index(type); int ncopies = btrfs_raid_array[index].ncopies; + const int nparity = btrfs_raid_array[index].nparity; int data_stripes; - switch (type & BTRFS_BLOCK_GROUP_PROFILE_MASK) { - case BTRFS_BLOCK_GROUP_RAID5: - data_stripes = num_stripes - 1; - break; - case BTRFS_BLOCK_GROUP_RAID6: - data_stripes = num_stripes - 2; - break; - default: + if (nparity) + data_stripes = num_stripes - nparity; + else data_stripes = num_stripes / ncopies; - break; - } + return div_u64(chunk_len, data_stripes); } |