On 9/24/19 6:53 AM, yangerkun wrote: > After 75b28af("io_uring: allocate the two rings together"), we compare > sq.head with cached_cq_tail to determine does there any cq invalid. > Actually, we should use cq.head. Nice catch, applied. BTW, note for future submissions, this: > Fixes: 75b28af ("io_uring: allocate the two rings together") sha should be 12 characters. I will fix it up in this one. -- Jens Axboe