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| author |   Zhao Lei <zhaolei@cn.fujitsu.com> | 2015-09-15 21:08:06 +0800 |
|---|---|---|
| committer |   David Sterba <dsterba@suse.com> | 2015-10-21 18:28:48 +0200 |
| commit | af902047508d3619499cbbc2f7c4c5e16428b2e3 (patch) | |
| tree | d9be3362b1840eb3d1abdeb7b3165e11d836322d /fs/btrfs/volumes.h | |
| parent | btrfs: use a single if() statement for one outcome in get_block_rsv() (diff) | |
| download | linux-dev-af902047508d3619499cbbc2f7c4c5e16428b2e3.tar.xz linux-dev-af902047508d3619499cbbc2f7c4c5e16428b2e3.zip | |
btrfs: Move btrfs_raid_array to public
This array is used to record attributes of each raid type,
make it public, and many functions will benifit with this array.
For example, num_tolerated_disk_barrier_failures(), we can
avoid complex conditions in this function, and get raid attribute
simply by accessing above array.
It can also make code logic simple, reduce duplication code, and
increase maintainability.
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to '')
| -rw-r--r-- | fs/btrfs/volumes.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index 2ca784a14e84..75d6083d9b3b 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -338,6 +338,10 @@ struct btrfs_raid_attr { int ncopies; /* how many copies to data has */ }; +extern const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES]; + +extern const u64 btrfs_raid_group[BTRFS_NR_RAID_TYPES]; + struct map_lookup { u64 type; int io_align; |