diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-cgroup.c | 16 | ||||
| -rw-r--r-- | block/blk-cgroup.h | 4 |
2 files changed, 16 insertions, 4 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 19ee29f1b7c5..2e6fb7d91805 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -131,12 +131,17 @@ static void blkg_free(struct blkio_group *blkg) return; for (i = 0; i < BLKIO_NR_POLICIES; i++) { + struct blkio_policy_type *pol = blkio_policy[i]; struct blkg_policy_data *pd = blkg->pd[i]; - if (pd) { - free_percpu(pd->stats_cpu); - kfree(pd); - } + if (!pd) + continue; + + if (pol && pol->ops.blkio_exit_group_fn) + pol->ops.blkio_exit_group_fn(blkg); + + free_percpu(pd->stats_cpu); + kfree(pd); } kfree(blkg); @@ -432,6 +437,9 @@ blkiocg_reset_stats(struct cgroup *cgroup, struct cftype *cftype, u64 val) blkg_stat_reset(&stats->empty_time); #endif blkio_reset_stats_cpu(blkg, pol->plid); + + if (pol->ops.blkio_reset_group_stats_fn) + pol->ops.blkio_reset_group_stats_fn(blkg); } } diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h index c82de47ae69f..d0ee649e8bbb 100644 --- a/block/blk-cgroup.h +++ b/block/blk-cgroup.h @@ -153,9 +153,13 @@ struct blkio_group { }; typedef void (blkio_init_group_fn)(struct blkio_group *blkg); +typedef void (blkio_exit_group_fn)(struct blkio_group *blkg); +typedef void (blkio_reset_group_stats_fn)(struct blkio_group *blkg); struct blkio_policy_ops { blkio_init_group_fn *blkio_init_group_fn; + blkio_exit_group_fn *blkio_exit_group_fn; + blkio_reset_group_stats_fn *blkio_reset_group_stats_fn; }; struct blkio_policy_type { |