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authorZhao Lei <zhaolei@cn.fujitsu.com>2015-09-15 21:08:06 +0800
committerDavid Sterba <dsterba@suse.com>2015-10-21 18:28:48 +0200
commitaf902047508d3619499cbbc2f7c4c5e16428b2e3 (patch)
treed9be3362b1840eb3d1abdeb7b3165e11d836322d /fs/btrfs/volumes.h
parente9cf439f0dc824cca6b2dc0dbb14e17f3f80b7f1 (diff)
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 'fs/btrfs/volumes.h')
-rw-r--r--fs/btrfs/volumes.h4
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;