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authorChengming Zhou <zhouchengming@bytedance.com>2023-04-06 22:50:49 +0800
committerJens Axboe <axboe@kernel.dk>2023-04-06 16:17:32 -0600
commitd1023165eef83dace7cc6299af904f26272baaca (patch)
tree403f245c95b480759d909c2c990b928b8dd6dc15
parente9f2f3f590289681c71d0137d4e5e88421f934c6 (diff)
blk-cgroup: delete cpd_bind_fn of blkcg_policy
cpd_bind_fn is just used for update default weight when block subsys attached to a hierarchy. No any policy need it anymore. Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com> Acked-by: Tejun Heo <tj@kernel.org> Link: https://lore.kernel.org/r/20230406145050.49914-3-zhouchengming@bytedance.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
-rw-r--r--block/blk-cgroup.c21
-rw-r--r--block/blk-cgroup.h1
2 files changed, 0 insertions, 22 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index bd50b55bdb61..68b797b3f114 100644
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -1355,26 +1355,6 @@ void blkcg_exit_disk(struct gendisk *disk)
blk_throtl_exit(disk);
}
-static void blkcg_bind(struct cgroup_subsys_state *root_css)
-{
- int i;
-
- mutex_lock(&blkcg_pol_mutex);
-
- for (i = 0; i < BLKCG_MAX_POLS; i++) {
- struct blkcg_policy *pol = blkcg_policy[i];
- struct blkcg *blkcg;
-
- if (!pol || !pol->cpd_bind_fn)
- continue;
-
- list_for_each_entry(blkcg, &all_blkcgs, all_blkcgs_node)
- if (blkcg->cpd[pol->plid])
- pol->cpd_bind_fn(blkcg->cpd[pol->plid]);
- }
- mutex_unlock(&blkcg_pol_mutex);
-}
-
static void blkcg_exit(struct task_struct *tsk)
{
if (tsk->throttle_disk)
@@ -1388,7 +1368,6 @@ struct cgroup_subsys io_cgrp_subsys = {
.css_offline = blkcg_css_offline,
.css_free = blkcg_css_free,
.css_rstat_flush = blkcg_rstat_flush,
- .bind = blkcg_bind,
.dfl_cftypes = blkcg_files,
.legacy_cftypes = blkcg_legacy_files,
.legacy_name = "blkio",
diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h
index 9c5078755e5e..26ce62663e27 100644
--- a/block/blk-cgroup.h
+++ b/block/blk-cgroup.h
@@ -175,7 +175,6 @@ struct blkcg_policy {
blkcg_pol_alloc_cpd_fn *cpd_alloc_fn;
blkcg_pol_init_cpd_fn *cpd_init_fn;
blkcg_pol_free_cpd_fn *cpd_free_fn;
- blkcg_pol_bind_cpd_fn *cpd_bind_fn;
blkcg_pol_alloc_pd_fn *pd_alloc_fn;
blkcg_pol_init_pd_fn *pd_init_fn;