| commit | 09a6f4efaa6536e760385f949e24078fd78305ad | [log] [tgz] |
|---|---|---|
| author | Pavel Begunkov <asml.silence@gmail.com> | Sun Mar 14 20:57:10 2021 +0000 |
| committer | Jens Axboe <axboe@kernel.dk> | Mon Mar 15 09:32:40 2021 -0600 |
| tree | 050edd8ceb6d2f5ca6d5a24e826bd2063b482d07 | |
| parent | 180f829fe4026bd192447d261e712b6cb84f6202 [diff] |
io_uring: replace sqd rw_semaphore with mutex The only user of read-locking of sqd->rw_lock is sq_thread itself, which is by definition alone, so we don't really need rw_semaphore, but mutex will do. Replace it with a mutex, and kill read-to-write upgrading and extra task_work handling in io_sq_thread(). Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>