blkcg: fix incorrect read/write sync/async stat accounting
authorTejun Heo <tj@kernel.org>
Thu, 22 Oct 2015 00:27:12 +0000 (09:27 +0900)
committerJens Axboe <axboe@fb.com>
Tue, 27 Oct 2015 06:04:56 +0000 (15:04 +0900)
commit174fd8d369613c4e06660f3704caaba48dac8554
tree7b510befe24f781d0d00561ce61b3c41cbf7d29f
parent858e904bd71dd0057a548d6785d94ce5ec4aeabd
blkcg: fix incorrect read/write sync/async stat accounting

While unifying how blkcg stats are collected, 77ea733884eb ("blkcg:
move io_service_bytes and io_serviced stats into blkcg_gq")
incorrectly used bio->flags instead of bio->rw to tell the IO type.
This made IOs to be accounted as the wrong type.  Fix it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Fixes: 77ea733884eb ("blkcg: move io_service_bytes and io_serviced stats into blkcg_gq")
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
include/linux/blk-cgroup.h