tree 0118d96c9baa6fadd41209e7232be23fc1517961
parent af8e2d1df9848b39dd86b1e696bf8781d2020a88
author Miao Xie <miaox@cn.fujitsu.com> 1415261661 +0800
committer Miao Xie <miaox@cn.fujitsu.com> 1417573125 +0800

Btrfs, raid56: use a variant to record the operation type

We will introduce new operation type later, if we still use integer
variant as bool variant to record the operation type, we would add new
variant and increase the size of raid bio structure. It is not good,
by this patch, we define different number for different operation,
and we can just use a variant to record the operation type.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>