tree c9204e45bd710cf8cc1ed13dccd498e432dfda9e
parent 82f70d62f7923cc43128e75ae85366f137055b76
author Miao Xie <miaox@cn.fujitsu.com> 1409751330 +0800
committer Chris Mason <clm@fb.com> 1410986309 -0700

Btrfs: cleanup unused num_can_discard in fs_devices

The member variants - num_can_discard - of fs_devices structure
are set, but no one use them to do anything. so remove them.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>