diff options
Diffstat (limited to 'block/blk-cgroup.c')
| -rw-r--r-- | block/blk-cgroup.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 168b2f803238..c20929bce812 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -1390,14 +1390,14 @@ struct cgroup_subsys io_cgrp_subsys = { EXPORT_SYMBOL_GPL(io_cgrp_subsys); /** - * blkcg_activate_policy - activate a blkcg policy on a request_queue - * @q: request_queue of interest + * blkcg_activate_policy - activate a blkcg policy on a gendisk + * @disk: gendisk of interest * @pol: blkcg policy to activate * - * Activate @pol on @q. Requires %GFP_KERNEL context. @q goes through + * Activate @pol on @disk. Requires %GFP_KERNEL context. @disk goes through * bypass mode to populate its blkgs with policy_data for @pol. * - * Activation happens with @q bypassed, so nobody would be accessing blkgs + * Activation happens with @disk bypassed, so nobody would be accessing blkgs * from IO path. Update of each blkg is protected by both queue and blkcg * locks so that holding either lock and testing blkcg_policy_enabled() is * always enough for dereferencing policy data. @@ -1405,9 +1405,9 @@ EXPORT_SYMBOL_GPL(io_cgrp_subsys); * The caller is responsible for synchronizing [de]activations and policy * [un]registerations. Returns 0 on success, -errno on failure. */ -int blkcg_activate_policy(struct request_queue *q, - const struct blkcg_policy *pol) +int blkcg_activate_policy(struct gendisk *disk, const struct blkcg_policy *pol) { + struct request_queue *q = disk->queue; struct blkg_policy_data *pd_prealloc = NULL; struct blkcg_gq *blkg, *pinned_blkg = NULL; int ret; @@ -1508,16 +1508,17 @@ enomem: EXPORT_SYMBOL_GPL(blkcg_activate_policy); /** - * blkcg_deactivate_policy - deactivate a blkcg policy on a request_queue - * @q: request_queue of interest + * blkcg_deactivate_policy - deactivate a blkcg policy on a gendisk + * @disk: gendisk of interest * @pol: blkcg policy to deactivate * - * Deactivate @pol on @q. Follows the same synchronization rules as + * Deactivate @pol on @disk. Follows the same synchronization rules as * blkcg_activate_policy(). */ -void blkcg_deactivate_policy(struct request_queue *q, +void blkcg_deactivate_policy(struct gendisk *disk, const struct blkcg_policy *pol) { + struct request_queue *q = disk->queue; struct blkcg_gq *blkg; if (!blkcg_policy_enabled(q, pol)) |