blkcg, writeback: Implement wbc_blkcg_css()
authorTejun Heo <tj@kernel.org>
Thu, 27 Jun 2019 20:39:51 +0000 (13:39 -0700)
committerJens Axboe <axboe@kernel.dk>
Wed, 10 Jul 2019 15:00:57 +0000 (09:00 -0600)
commit653c45c6b90c9659facbef10546d1f3a8e37d0cf
tree41f5f5435fdb7c50c7ad682fc1dc214a4f33a1dc
parent27b36d8fa81fa8274fb72f4eb1484026f6b6daa8
blkcg, writeback: Implement wbc_blkcg_css()

Add a helper to determine the target blkcg from wbc.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
include/linux/writeback.h