diff options
Diffstat (limited to 'block/blk-cgroup.c')
| -rw-r--r-- | block/blk-cgroup.c | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 290792a13e3..79fd9f4fadb 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -765,18 +765,18 @@ struct cftype blkcg_files[] = { /** * blkcg_css_offline - cgroup css_offline callback - * @cgroup: cgroup of interest + * @css: css of interest * - * This function is called when @cgroup is about to go away and responsible - * for shooting down all blkgs associated with @cgroup. blkgs should be + * This function is called when @css is about to go away and responsible + * for shooting down all blkgs associated with @css. blkgs should be * removed while holding both q and blkcg locks. As blkcg lock is nested * inside q lock, this function performs reverse double lock dancing. * * This is the blkcg counterpart of ioc_release_fn(). */ -static void blkcg_css_offline(struct cgroup *cgroup) +static void blkcg_css_offline(struct cgroup_subsys_state *css) { - struct blkcg *blkcg = cgroup_to_blkcg(cgroup); + struct blkcg *blkcg = css_to_blkcg(css); spin_lock_irq(&blkcg->lock); @@ -798,21 +798,21 @@ static void blkcg_css_offline(struct cgroup *cgroup) spin_unlock_irq(&blkcg->lock); } -static void blkcg_css_free(struct cgroup *cgroup) +static void blkcg_css_free(struct cgroup_subsys_state *css) { - struct blkcg *blkcg = cgroup_to_blkcg(cgroup); + struct blkcg *blkcg = css_to_blkcg(css); if (blkcg != &blkcg_root) kfree(blkcg); } -static struct cgroup_subsys_state *blkcg_css_alloc(struct cgroup *cgroup) +static struct cgroup_subsys_state * +blkcg_css_alloc(struct cgroup_subsys_state *parent_css) { static atomic64_t id_seq = ATOMIC64_INIT(0); struct blkcg *blkcg; - struct cgroup *parent = cgroup->parent; - if (!parent) { + if (!parent_css) { blkcg = &blkcg_root; goto done; } @@ -883,14 +883,15 @@ void blkcg_exit_queue(struct request_queue *q) * of the main cic data structures. For now we allow a task to change * its cgroup only if it's the only owner of its ioc. */ -static int blkcg_can_attach(struct cgroup *cgrp, struct cgroup_taskset *tset) +static int blkcg_can_attach(struct cgroup_subsys_state *css, + struct cgroup_taskset *tset) { struct task_struct *task; struct io_context *ioc; int ret = 0; /* task_lock() is needed to avoid races with exit_io_context() */ - cgroup_taskset_for_each(task, cgrp, tset) { + cgroup_taskset_for_each(task, css->cgroup, tset) { task_lock(task); ioc = task->io_context; if (ioc && atomic_read(&ioc->nr_tasks) > 1) |