diff options
Diffstat (limited to 'mm/backing-dev.c')
| -rw-r--r-- | mm/backing-dev.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/mm/backing-dev.c b/mm/backing-dev.c index 2e5d3df0853d..f5981e9d6ae2 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -438,10 +438,10 @@ retry: if (new_congested) { /* !found and storage for new one already allocated, insert */ congested = new_congested; - new_congested = NULL; rb_link_node(&congested->rb_node, parent, node); rb_insert_color(&congested->rb_node, &bdi->cgwb_congested_tree); - goto found; + spin_unlock_irqrestore(&cgwb_lock, flags); + return congested; } spin_unlock_irqrestore(&cgwb_lock, flags); @@ -451,13 +451,13 @@ retry: if (!new_congested) return NULL; - atomic_set(&new_congested->refcnt, 0); + refcount_set(&new_congested->refcnt, 1); new_congested->__bdi = bdi; new_congested->blkcg_id = blkcg_id; goto retry; found: - atomic_inc(&congested->refcnt); + refcount_inc(&congested->refcnt); spin_unlock_irqrestore(&cgwb_lock, flags); kfree(new_congested); return congested; @@ -473,11 +473,8 @@ void wb_congested_put(struct bdi_writeback_congested *congested) { unsigned long flags; - local_irq_save(flags); - if (!atomic_dec_and_lock(&congested->refcnt, &cgwb_lock)) { - local_irq_restore(flags); + if (!refcount_dec_and_lock_irqsave(&congested->refcnt, &cgwb_lock, &flags)) return; - } /* bdi might already have been destroyed leaving @congested unlinked */ if (congested->__bdi) { @@ -804,7 +801,7 @@ static int cgwb_bdi_init(struct backing_dev_info *bdi) if (!bdi->wb_congested) return -ENOMEM; - atomic_set(&bdi->wb_congested->refcnt, 1); + refcount_set(&bdi->wb_congested->refcnt, 1); err = wb_init(&bdi->wb, bdi, 1, GFP_KERNEL); if (err) { |