Re: [PATCH 2/2] target: use RCU_INIT_POINTER() when NULLing.

From: Christoph Hellwig
Date: Sun May 01 2016 - 13:01:29 EST

On Sun, May 01, 2016 at 06:22:01PM +0530, Muhammad Falak R Wani wrote:
> It is safe to use RCU_INIT_POINTER() to NULL, instead of
> rcu_assign_pointer().
> This results in slightly smaller/faster code.

If this is indeed the case, rcu_assign_pointer should simply check
for NULL using __builtin_constant_p and do the right thing transparently
instead of burdening it on every user.