Re: [PATCH tip/core/rcu 21/21] drivers/vhost: Remove now-redundant read_barrier_depends()
From: Peter Zijlstra <peterz@infradead.org>
Date: 2017-12-05 21:57:00
On Tue, Dec 05, 2017 at 11:24:49PM +0200, Michael S. Tsirkin wrote:
READ_ONCE is really all over the place (some code literally replaced all memory accesses with READ/WRITE ONCE).
Yeah, so? Complain to the compiler people for forcing us into that.
Would an API like WRITE_POINTER()/smp_store_pointer make sense, and READ_POINTER for symmetry?
No, the whole point of the exercise was to get away from the fact that dependent loads are special.