On 10/03/21 14:20, Elena Afanasova wrote:
On Tue, 2021-03-09 at 09:01 +0100, Paolo Bonzini wrote:
On 09/03/21 08:54, Jason Wang wrote:
+ return;
+
+ spin_lock(&ctx->wq.lock);
+ wait_event_interruptible_exclusive_locked(ctx->wq, !ctx-
busy);
Any reason that a simple mutex_lock_interruptible() can't work
here?
Or alternatively why can't the callers just take the spinlock.
I'm not sure I understand your question. Do you mean why locked version
of wait_event() is used?
No, I mean why do you need to use ctx->busy and wait_event, instead of
operating directly on the spinlock or on a mutex.
Paolo
