Re: [for-416 PATCH 1/2] bcache: Fix, improve efficiency of closure_sync()
From: Jens Axboe <axboe@kernel.dk>
Date: 2018-01-05 16:05:14
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On 12/30/17 4:09 PM, Michael Lyle wrote:
+void __closure_sync(struct closure *cl)
+{
+ struct closure_syncer s = { .task = current };
+ cl->s = &s;
+ continue_at(cl, closure_sync_fn, NULL);
+
+ while (1) {
+ __set_current_state(TASK_UNINTERRUPTIBLE);
+ smp_mb(); /* Ensure task state set before load of done flag */That's why we have set_current_state(). -- Jens Axboe