diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-cgroup.c | 15 | ||||
| -rw-r--r-- | block/blk-exec.c | 8 |
2 files changed, 14 insertions, 9 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 5dea4e8dbc5..b8858fb0caf 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -600,7 +600,7 @@ struct cftype blkcg_files[] = { }; /** - * blkcg_pre_destroy - cgroup pre_destroy callback + * blkcg_css_offline - cgroup css_offline callback * @cgroup: cgroup of interest * * This function is called when @cgroup is about to go away and responsible @@ -610,7 +610,7 @@ struct cftype blkcg_files[] = { * * This is the blkcg counterpart of ioc_release_fn(). */ -static int blkcg_pre_destroy(struct cgroup *cgroup) +static void blkcg_css_offline(struct cgroup *cgroup) { struct blkcg *blkcg = cgroup_to_blkcg(cgroup); @@ -632,10 +632,9 @@ static int blkcg_pre_destroy(struct cgroup *cgroup) } spin_unlock_irq(&blkcg->lock); - return 0; } -static void blkcg_destroy(struct cgroup *cgroup) +static void blkcg_css_free(struct cgroup *cgroup) { struct blkcg *blkcg = cgroup_to_blkcg(cgroup); @@ -643,7 +642,7 @@ static void blkcg_destroy(struct cgroup *cgroup) kfree(blkcg); } -static struct cgroup_subsys_state *blkcg_create(struct cgroup *cgroup) +static struct cgroup_subsys_state *blkcg_css_alloc(struct cgroup *cgroup) { static atomic64_t id_seq = ATOMIC64_INIT(0); struct blkcg *blkcg; @@ -740,10 +739,10 @@ static int blkcg_can_attach(struct cgroup *cgrp, struct cgroup_taskset *tset) struct cgroup_subsys blkio_subsys = { .name = "blkio", - .create = blkcg_create, + .css_alloc = blkcg_css_alloc, + .css_offline = blkcg_css_offline, + .css_free = blkcg_css_free, .can_attach = blkcg_can_attach, - .pre_destroy = blkcg_pre_destroy, - .destroy = blkcg_destroy, .subsys_id = blkio_subsys_id, .base_cftypes = blkcg_files, .module = THIS_MODULE, diff --git a/block/blk-exec.c b/block/blk-exec.c index 1320e74d79b..74638ec234c 100644 --- a/block/blk-exec.c +++ b/block/blk-exec.c @@ -52,11 +52,17 @@ void blk_execute_rq_nowait(struct request_queue *q, struct gendisk *bd_disk, rq_end_io_fn *done) { int where = at_head ? ELEVATOR_INSERT_FRONT : ELEVATOR_INSERT_BACK; + bool is_pm_resume; WARN_ON(irqs_disabled()); rq->rq_disk = bd_disk; rq->end_io = done; + /* + * need to check this before __blk_run_queue(), because rq can + * be freed before that returns. + */ + is_pm_resume = rq->cmd_type == REQ_TYPE_PM_RESUME; spin_lock_irq(q->queue_lock); @@ -71,7 +77,7 @@ void blk_execute_rq_nowait(struct request_queue *q, struct gendisk *bd_disk, __elv_add_request(q, rq, where); __blk_run_queue(q); /* the queue is stopped so it won't be run */ - if (rq->cmd_type == REQ_TYPE_PM_RESUME) + if (is_pm_resume) __blk_run_queue_uncond(q); spin_unlock_irq(q->queue_lock); } |