[PATCH 09/15] btrfs: use raid_attr table for btrfs_bg_type_to_factor

[David Sterba]

The factor is the number of copies.

Signed-off-by: David Sterba <dste...@suse.com>
---
 fs/btrfs/volumes.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 9bcda2d76a33..3d65fdf7884c 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -7581,10 +7581,9 @@ void btrfs_reset_fs_info_ptr(struct btrfs_fs_info 
*fs_info)
  */
 int btrfs_bg_type_to_factor(u64 flags)
 {
-       if (flags & (BTRFS_BLOCK_GROUP_DUP | BTRFS_BLOCK_GROUP_RAID1 |
-                    BTRFS_BLOCK_GROUP_RAID10))
-               return 2;
-       return 1;
+       const int index = btrfs_bg_flags_to_raid_index(flags);
+
+       return btrfs_raid_array[index].ncopies;
 }
 
 
-- 
2.21.0