Re: [PATCH] io_uring: check file_slot early when accept use fix_file mode

[Jens Axboe <axboe@xxxxxxxxx>]

On 9/7/21 9:16 AM, Hao Xu wrote:
> check file_slot early in io_accept_prep() to avoid wasted effort in
> failure cases.

It's generally better to just let the failure cases deal with it instead
of having checks in multiple places. This is a failure path, so we don't
care about making it fail early. Optimizations should be for the hot path,
which is not a malformed sqe.

-- 
Jens Axboe