diff options
| author |   Dennis Zhou <dennis@kernel.org> | 2018-12-05 12:10:35 -0500 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2018-12-07 22:26:37 -0700 |
| commit | db6638d7d177a8bc74c9e539e2e0d7d061c767b1 (patch) | |
| tree | 4d797db1677ed41d4c59857f680ef05ff1902b07 /include/linux/blk_types.h | |
| parent | blkcg: associate writeback bios with a blkg (diff) | |
| download | wireguard-linux-db6638d7d177a8bc74c9e539e2e0d7d061c767b1.tar.xz wireguard-linux-db6638d7d177a8bc74c9e539e2e0d7d061c767b1.zip | |
blkcg: remove bio->bi_css and instead use bio->bi_blkg
Prior patches ensured that any bio that interacts with a request_queue
is properly associated with a blkg. This makes bio->bi_css unnecessary
as blkg maintains a reference to blkcg already.
This removes the bio field bi_css and transfers corresponding uses to
access via bi_blkg.
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>
Diffstat (limited to 'include/linux/blk_types.h')
| -rw-r--r-- | include/linux/blk_types.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index c0ba1a038ff3..46c005d601ac 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -174,10 +174,11 @@ struct bio { void *bi_private; #ifdef CONFIG_BLK_CGROUP /* - * Optional css associated with this bio. Put on bio - * release. Read comment on top of bio_associate_current(). + * Represents the association of the css and request_queue for the bio. + * If a bio goes direct to device, it will not have a blkg as it will + * not have a request_queue associated with it. The reference is put + * on release of the bio. */ - struct cgroup_subsys_state *bi_css; struct blkcg_gq *bi_blkg; struct bio_issue bi_issue; #endif |