On Fri, Jul 19, 2019 at 07:07:49PM -0400, Jeff Layton wrote: > Al pointed out on IRC that vfree should be callable under spinlock. Al had been near-terminally low on caffeine at the time, posted a retraction a few minutes later and went to grab some coffee... > It > only sleeps if !in_interrupt(), and I think that should return true if > we're holding a spinlock. It can be used from RCU callbacks and all such; it *can't* be used from under spinlock - on non-preempt builds there's no way to recognize that.
