| commit | ae34817bd93e373a03203a4c6892735c430a14e1 | [log] [tgz] |
|---|---|---|
| author | Pavel Begunkov <asml.silence@gmail.com> | Thu Jul 23 20:25:20 2020 +0300 |
| committer | Jens Axboe <axboe@kernel.dk> | Fri Jul 24 13:00:46 2020 -0600 |
| tree | 36e31c3d6eb575289ab4ad10a293c661fa3b8396 | |
| parent | 23b3628e45924419399da48c2b3a522b05557c91 [diff] |
io_uring: don't do opcode prep twice Calling into opcode prep handlers may be dangerous, as they re-read SQE but might not re-initialise requests completely. If io_req_defer() passed fast checks and is done with preparations, punt it async. As all other cases are covered with nulling @sqe, this guarantees that io_[opcode]_prep() are visited only once per request. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>