blkcg: associate writeback bios with a blkg
authorDennis Zhou <dennis@kernel.org>
Wed, 5 Dec 2018 17:10:34 +0000 (12:10 -0500)
committerJens Axboe <axboe@kernel.dk>
Sat, 8 Dec 2018 05:26:37 +0000 (22:26 -0700)
commitfd42df305f804ddc0d5ac028e944784283b2f92d
treef10e4821b3dca25647f1eaf401b8f4529d0d2ade
parent6a7f6d86a561473032287c8e4583eac5853c6efa
blkcg: associate writeback bios with a blkg

One of the goals of this series is to remove a separate reference to
the css of the bio. This can and should be accessed via bio_blkcg(). In
this patch, wbc_init_bio() now requires a bio to have a device
associated with it.

Signed-off-by: Dennis Zhou <dennis@kernel.org>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Documentation/admin-guide/cgroup-v2.rst
block/bio.c
fs/buffer.c
fs/ext4/page-io.c
include/linux/bio.h
include/linux/writeback.h