diff options
| author | Kundan Kumar <kundan.kumar@samsung.com> | 2023-12-18 16:27:22 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-12-18 17:46:53 +0100 |
| commit | 6c9b97085c473e380e57cf33c95d2c74444b2a5d (patch) | |
| tree | 36ff5af11bc93f08265aea9ca4c57d3c4838802c /block/blk-cgroup.c | |
| parent | block: improve struct request_queue layout (diff) | |
| download | linux-6c9b97085c473e380e57cf33c95d2c74444b2a5d.tar.xz linux-6c9b97085c473e380e57cf33c95d2c74444b2a5d.zip | |
block: skip cgroups for passthrough io
Even if BLK_CGROUP is enabled, it does not work for passthrough io.
So skip setting up blkg for passthrough bio.
Reduced processing gives ~5% hike in peak-performance workload.
Signed-off-by: Kundan Kumar <kundan.kumar@samsung.com>
Signed-off-by: Kanchan Joshi <joshi.k@samsung.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Link: https://lore.kernel.org/r/20231218152722.1768-1-joshi.k@samsung.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-cgroup.c')
| -rw-r--r-- | block/blk-cgroup.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 4b48c2c44098..58b13ef23821 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -2064,6 +2064,9 @@ void bio_associate_blkg(struct bio *bio) { struct cgroup_subsys_state *css; + if (blk_op_is_passthrough(bio->bi_opf)) + return; + rcu_read_lock(); if (bio->bi_blkg) |