diff options
Diffstat (limited to 'mm/backing-dev.c')
| -rw-r--r-- | mm/backing-dev.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/mm/backing-dev.c b/mm/backing-dev.c index 2df8ddcb0ca0..e92d77937fd3 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -480,6 +480,10 @@ static void cgwb_release_workfn(struct work_struct *work) release_work); struct backing_dev_info *bdi = wb->bdi; + spin_lock_irq(&cgwb_lock); + list_del_rcu(&wb->bdi_node); + spin_unlock_irq(&cgwb_lock); + wb_shutdown(wb); css_put(wb->memcg_css); @@ -575,6 +579,7 @@ static int cgwb_create(struct backing_dev_info *bdi, ret = radix_tree_insert(&bdi->cgwb_tree, memcg_css->id, wb); if (!ret) { atomic_inc(&bdi->usage_cnt); + list_add_tail_rcu(&wb->bdi_node, &bdi->wb_list); list_add(&wb->memcg_node, memcg_cgwb_list); list_add(&wb->blkcg_node, blkcg_cgwb_list); css_get(memcg_css); @@ -764,15 +769,22 @@ static void cgwb_bdi_destroy(struct backing_dev_info *bdi) { } int bdi_init(struct backing_dev_info *bdi) { + int ret; + bdi->dev = NULL; bdi->min_ratio = 0; bdi->max_ratio = 100; bdi->max_prop_frac = FPROP_FRAC_BASE; INIT_LIST_HEAD(&bdi->bdi_list); + INIT_LIST_HEAD(&bdi->wb_list); init_waitqueue_head(&bdi->wb_waitq); - return cgwb_bdi_init(bdi); + ret = cgwb_bdi_init(bdi); + + list_add_tail_rcu(&bdi->wb.bdi_node, &bdi->wb_list); + + return ret; } EXPORT_SYMBOL(bdi_init); |