diff options
Diffstat (limited to 'drivers/target/target_core_pr.c')
| -rw-r--r-- | drivers/target/target_core_pr.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c index 60624bb..94935ea 100644 --- a/drivers/target/target_core_pr.c +++ b/drivers/target/target_core_pr.c @@ -704,7 +704,8 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration( */ spin_lock(&dev->se_port_lock); list_for_each_entry_safe(lun_tmp, next, &dev->dev_sep_list, lun_dev_link) { - atomic_inc_mb(&lun_tmp->lun_active); + if (!percpu_ref_tryget_live(&lun_tmp->lun_ref)) + continue; spin_unlock(&dev->se_port_lock); spin_lock_bh(&lun_tmp->lun_deve_lock); @@ -751,7 +752,7 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration( if (ret < 0) { pr_err("core_scsi3_lunacl_depend" "_item() failed\n"); - atomic_dec_mb(&lun->lun_active); + percpu_ref_put(&lun_tmp->lun_ref); kref_put(&deve_tmp->pr_kref, target_pr_kref_release); goto out; } @@ -770,7 +771,7 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration( deve_tmp->mapped_lun, NULL, sa_res_key, all_tg_pt, aptpl); if (!pr_reg_atp) { - atomic_dec_mb(&lun_tmp->lun_active); + percpu_ref_put(&lun_tmp->lun_ref); core_scsi3_lunacl_undepend_item(deve_tmp); goto out; } @@ -782,7 +783,7 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration( spin_unlock_bh(&lun_tmp->lun_deve_lock); spin_lock(&dev->se_port_lock); - atomic_dec_mb(&lun_tmp->lun_active); + percpu_ref_put(&lun_tmp->lun_ref); } spin_unlock(&dev->se_port_lock); |