diff options
| author |   Dennis Zhou (Facebook) <dennisszhou@gmail.com> | 2018-09-11 14:41:33 -0400 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2018-09-21 20:29:13 -0600 |
| commit | c839e7a03f92bafd71fd145b470dcdc7f43f2d4c (patch) | |
| tree | 2327729d2f67268d179beb22f4ef9db44b156af1 /drivers/block/loop.c | |
| parent | blkcg: associate writeback bios with a blkg (diff) | |
| download | linux-dev-c839e7a03f92bafd71fd145b470dcdc7f43f2d4c.tar.xz linux-dev-c839e7a03f92bafd71fd145b470dcdc7f43f2d4c.zip | |
blkcg: remove bio->bi_css and instead use bio->bi_blkg
Prior patches ensured that all bios are now associated with some blkg.
This now makes bio->bi_css unnecessary as blkg maintains a reference to
the blkcg already.
This patch removes the field bi_css and transfers corresponding uses to
access via bi_blkg.
Signed-off-by: Dennis Zhou <dennisszhou@gmail.com>
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 '')
| -rw-r--r-- | drivers/block/loop.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/block/loop.c b/drivers/block/loop.c index ea9debf59b22..abad6d15f956 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -77,6 +77,7 @@ #include <linux/falloc.h> #include <linux/uio.h> #include <linux/ioprio.h> +#include <linux/blk-cgroup.h> #include "loop.h" @@ -1760,8 +1761,8 @@ static blk_status_t loop_queue_rq(struct blk_mq_hw_ctx *hctx, /* always use the first bio's css */ #ifdef CONFIG_BLK_CGROUP - if (cmd->use_aio && rq->bio && rq->bio->bi_css) { - cmd->css = rq->bio->bi_css; + if (cmd->use_aio && rq->bio && rq->bio->bi_blkg) { + cmd->css = &bio_blkcg(rq->bio)->css; css_get(cmd->css); } else #endif |