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| author | Dennis Zhou (Facebook) <dennisszhou@gmail.com> | 2018-09-11 20:41:29 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-09-22 04:29:06 +0200 |
| commit | a7b39b4e961c4e2b3ed837803a7441a65c90ce33 (patch) | |
| tree | 7dda6dda4a341971504ccd16a44dbda27d57a0f8 /block/bounce.c | |
| parent | blkcg: convert blkg_lookup_create to find closest blkg (diff) | |
| download | linux-a7b39b4e961c4e2b3ed837803a7441a65c90ce33.tar.xz linux-a7b39b4e961c4e2b3ed837803a7441a65c90ce33.zip | |
blkcg: always associate a bio with a blkg
Previously, blkg's were only assigned as needed by blk-iolatency and
blk-throttle. bio->css was also always being associated while blkg was
being looked up and then thrown away in blkcg_bio_issue_check.
This patch begins the cleanup of bio->css and bio->bi_blkg by always
associating a blkg in blkcg_bio_issue_check. This tries to create the
blkg, but if it is not possible, falls back to using the root_blkg of
the request_queue. Therefore, a bio will always be associated with a
blkg. The duplicate association logic is removed from blk-throttle and
blk-iolatency.
Signed-off-by: Dennis Zhou <dennisszhou@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/bounce.c')
0 files changed, 0 insertions, 0 deletions