tree 769d23c296d9630af81595dd2071d029682e0895
parent 5f546063cee93047af90cf2756e023da9f9fca51
author Miao Xie <miaox@cn.fujitsu.com> 1406173030 +0800
committer Chris Mason <clm@fb.com> 1410986265 -0700

Btrfs: make the device lock and its protected data in the same cacheline

The lock in btrfs_device structure was far away from its protected data, it would
make CPU load the cache line twice when we accessed them, move them together.

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