On 1/12/24 7:25 AM, Christoph Hellwig wrote: > On Fri, Jan 12, 2024 at 07:22:18AM -0700, Jens Axboe wrote: >> Yep it is pretty cheap, but it's not free. Here's a test where we just >> grab a ref and drop it, which should arguably be cheaper than doing a >> ref at the top and dropping it at the bottom due to temporal locality: >> >> 5.01% +0.86% [kernel.vmlinux] [k] blk_mq_submit_bio > > Ok. Do you want to send out your version formally? Sure, can do. I'll pick your first patch here as that one makes sense separately. -- Jens Axboe
