diff options
Diffstat (limited to 'btrfsck.h')
| -rw-r--r-- | btrfsck.h | 17 |
1 files changed, 17 insertions, 0 deletions
@@ -142,6 +142,23 @@ static inline unsigned long btrfs_chunk_record_size(int num_stripes) } void free_chunk_cache_tree(struct cache_tree *chunk_cache); +/* + * Function to check validation for num_stripes, or it can call + * float point error for 0 division + * return < 0 for invalid combination + * return 0 for valid combination + */ +static inline int check_num_stripes(u64 type, int num_stripes) +{ + if (num_stripes == 0) + return -1; + if (type & BTRFS_BLOCK_GROUP_RAID5 && num_stripes <= 1) + return -1; + if (type & BTRFS_BLOCK_GROUP_RAID6 && num_stripes <= 2) + return -1; + return 0; +} + u64 calc_stripe_length(u64 type, u64 length, int num_stripes); /* For block group tree */ static inline void block_group_tree_init(struct block_group_tree *tree) |