On 8/12/22 2:39 AM, Chengming Zhou wrote: > We will try to get request from cache before alloc request, in > both cases will first attempt bio merge. > > This patch move this common part to blk_mq_submit_bio(), which > simplify the code and avoid passing in the pointer of bio. I don't think this will work. If we get a cached request, then we know we have a reference to the queue. If you swap these around, then that's no longer the case and we can have a use-after-free if the queue goes away. -- Jens Axboe
