Re: [RFC PATCH] locking/percpu-rwsem: use this_cpu_{inc|dec}() for read_count

peterz
2020-09-18T10:13:17Z

On Fri, Sep 18, 2020 at 12:01:12PM +0200, peterz@infradead.org wrote:
> + u64 sum = per_cpu_sum(*(u64 *)sem->read_count);

Moo, that doesn't work, we have to do two separate sums. I shouldn't try
to be clever on a Friday I suppose :-(