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path: root/drivers/block/rbd.c
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Diffstat (limited to 'drivers/block/rbd.c')
-rw-r--r--drivers/block/rbd.c32
1 files changed, 19 insertions, 13 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index a999b698b131..12b5d53ec856 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -3452,14 +3452,15 @@ static bool rbd_lock_add_request(struct rbd_img_request *img_req)
static void rbd_lock_del_request(struct rbd_img_request *img_req)
{
struct rbd_device *rbd_dev = img_req->rbd_dev;
- bool need_wakeup;
+ bool need_wakeup = false;
lockdep_assert_held(&rbd_dev->lock_rwsem);
spin_lock(&rbd_dev->lock_lists_lock);
- rbd_assert(!list_empty(&img_req->lock_item));
- list_del_init(&img_req->lock_item);
- need_wakeup = (rbd_dev->lock_state == RBD_LOCK_STATE_RELEASING &&
- list_empty(&rbd_dev->running_list));
+ if (!list_empty(&img_req->lock_item)) {
+ list_del_init(&img_req->lock_item);
+ need_wakeup = (rbd_dev->lock_state == RBD_LOCK_STATE_RELEASING &&
+ list_empty(&rbd_dev->running_list));
+ }
spin_unlock(&rbd_dev->lock_lists_lock);
if (need_wakeup)
complete(&rbd_dev->releasing_wait);
@@ -3842,14 +3843,19 @@ static void wake_lock_waiters(struct rbd_device *rbd_dev, int result)
return;
}
- list_for_each_entry(img_req, &rbd_dev->acquiring_list, lock_item) {
+ while (!list_empty(&rbd_dev->acquiring_list)) {
+ img_req = list_first_entry(&rbd_dev->acquiring_list,
+ struct rbd_img_request, lock_item);
mutex_lock(&img_req->state_mutex);
rbd_assert(img_req->state == RBD_IMG_EXCLUSIVE_LOCK);
+ if (!result)
+ list_move_tail(&img_req->lock_item,
+ &rbd_dev->running_list);
+ else
+ list_del_init(&img_req->lock_item);
rbd_img_schedule(img_req, result);
mutex_unlock(&img_req->state_mutex);
}
-
- list_splice_tail_init(&rbd_dev->acquiring_list, &rbd_dev->running_list);
}
static bool locker_equal(const struct ceph_locker *lhs,
@@ -5326,7 +5332,7 @@ static void rbd_dev_release(struct device *dev)
if (need_put) {
destroy_workqueue(rbd_dev->task_wq);
- ida_simple_remove(&rbd_dev_id_ida, rbd_dev->dev_id);
+ ida_free(&rbd_dev_id_ida, rbd_dev->dev_id);
}
rbd_dev_free(rbd_dev);
@@ -5402,9 +5408,9 @@ static struct rbd_device *rbd_dev_create(struct rbd_client *rbdc,
return NULL;
/* get an id and fill in device name */
- rbd_dev->dev_id = ida_simple_get(&rbd_dev_id_ida, 0,
- minor_to_rbd_dev_id(1 << MINORBITS),
- GFP_KERNEL);
+ rbd_dev->dev_id = ida_alloc_max(&rbd_dev_id_ida,
+ minor_to_rbd_dev_id(1 << MINORBITS) - 1,
+ GFP_KERNEL);
if (rbd_dev->dev_id < 0)
goto fail_rbd_dev;
@@ -5425,7 +5431,7 @@ static struct rbd_device *rbd_dev_create(struct rbd_client *rbdc,
return rbd_dev;
fail_dev_id:
- ida_simple_remove(&rbd_dev_id_ida, rbd_dev->dev_id);
+ ida_free(&rbd_dev_id_ida, rbd_dev->dev_id);
fail_rbd_dev:
rbd_dev_free(rbd_dev);
return NULL;