Btrfs: convert nested spin_lock_irqsave to spin_lock
If spin_lock_irqsave is called twice in a row with the same second argument, the interrupt state at the point of the second call overwrites the value saved by the first call. Indeed, the second call does not need to save the interrupt state, so it is changed to a simple spin_lock. Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
parent
4a8c9a62d7
commit
29c5e8ce01
|
@ -424,11 +424,11 @@ int btrfs_requeue_work(struct btrfs_work *work)
|
|||
* list
|
||||
*/
|
||||
if (worker->idle) {
|
||||
spin_lock_irqsave(&worker->workers->lock, flags);
|
||||
spin_lock(&worker->workers->lock);
|
||||
worker->idle = 0;
|
||||
list_move_tail(&worker->worker_list,
|
||||
&worker->workers->worker_list);
|
||||
spin_unlock_irqrestore(&worker->workers->lock, flags);
|
||||
spin_unlock(&worker->workers->lock);
|
||||
}
|
||||
if (!worker->working) {
|
||||
wake = 1;
|
||||
|
|
Loading…
Reference in a new issue