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-rw-r--r--cmds-fi-usage.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/cmds-fi-usage.c b/cmds-fi-usage.c
index b9a2b1c8..3bd2ccdf 100644
--- a/cmds-fi-usage.c
+++ b/cmds-fi-usage.c
@@ -660,7 +660,7 @@ static u64 calc_chunk_size(struct chunk_info *ci)
else if (ci->type & BTRFS_BLOCK_GROUP_RAID6)
return ci->size / (ci->num_stripes -2);
else if (ci->type & BTRFS_BLOCK_GROUP_RAID10)
- return ci->size / ci->num_stripes;
+ return ci->size / (ci->num_stripes / 2);
return ci->size;
}