Re: [PATCH] block: switch to atomic_t for request references
From: Keith Busch <kbusch@kernel.org>
Date: 2021-12-03 15:56:16
On Fri, Dec 03, 2021 at 08:35:40AM -0700, Jens Axboe wrote:
refcount_t is not as expensive as it used to be, but it's still more expensive than the io_uring method of using atomic_t and just checking for potential over/underflow. This borrows that same implementation, which in turn is based on the mm implementation from Linus.
Looks good. Reviewed-by: Keith Busch <kbusch@kernel.org>