| commit | 0a467d0fdd9594fbb449ebc93852533332c528fd | [log] [tgz] |
|---|---|---|
| author | Jens Axboe <axboe@kernel.dk> | Thu Oct 14 14:39:59 2021 -0600 |
| committer | Jens Axboe <axboe@kernel.dk> | Fri Dec 03 14:51:29 2021 -0700 |
| tree | fd368b2ce4f835da5d78e1bbd381b38aa98fd078 | |
| parent | ceaa762527f41a431b552bc000de4b626d2d8cb7 [diff] |
block: switch to atomic_t for request references 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. Reviewed-by: Keith Busch <kbusch@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>