btrfs: Use direct way to determine raid56 write/recover mode
authorZhao Lei <zhaolei@cn.fujitsu.com>
Tue, 15 Dec 2015 10:18:09 +0000 (18:18 +0800)
committerChris Mason <clm@fb.com>
Wed, 20 Jan 2016 02:43:45 +0000 (18:43 -0800)
commitad1ba2a0c453db255f04b17101db6d05c44d8467
tree76b4b001d9c01a6bd8376fd851266bad6256f250
parent94a97dfeb61e32a213ca5519b063076c5201c5b2
btrfs: Use direct way to determine raid56 write/recover mode

Old code used bbio->raid_map to determine whether in raid56
write/recover operation, because we didn't't have bbio->map_type.

Now we have direct way for this condition, rid of using
the function-relative data, and make the code more readable.

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
fs/btrfs/volumes.c