Verified on xenial with test case from description: # uname -r 4.4.0-167-generic
Bcache write performance wasn't affected significantly by the sysfs query (~200MB/s to ~197MB/s), so the patch looks to be working fine.
Verified on xenial with test case from description:
# uname -r
4.4.0-167-generic
Bcache write performance wasn't affected significantly by the sysfs query (~200MB/s to ~197MB/s), so the patch looks to be working fine.