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io_uring: don't mark link's head for_async 

No reason to mark a head of a link as for-async in io_req_defer_prep().
grab_env(), etc. That will be done further during submission if
neccessary.

Mark for_async=false saving extra grab_env() in many cases.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2020-06-27 14:04:57 +03:00 committed by Jens Axboe
parent 1bcb8c5d65
commit a6d45dd0d4
1 changed files with 1 additions and 1 deletions
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2
fs/io_uring.c
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@ -6092,7 +6092,7 @@ static int io_submit_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe,
if (io_alloc_async_ctx(req))
return -EAGAIN;
ret = io_req_defer_prep(req, sqe, true);
ret = io_req_defer_prep(req, sqe, false);
if (ret)
req->flags |= REQ_F_FAIL_LINK;
*link = req;