diff options
| author |   Jens Axboe <axboe@kernel.dk> | 2020-08-16 10:58:43 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-08-16 14:36:31 -0700 |
| commit | 3b2a4439e0ae1732f90877a7160bbf42e1beb4b6 (patch) | |
| tree | b84a72ec17fa7bb0ad754daaa9cdd7fd9b8ecdb6 /fs | |
| parent | io_uring: find and cancel head link async work on files exit (diff) | |
| download | wireguard-linux-3b2a4439e0ae1732f90877a7160bbf42e1beb4b6.tar.xz wireguard-linux-3b2a4439e0ae1732f90877a7160bbf42e1beb4b6.zip | |
io_uring: get rid of kiocb_wait_page_queue_init()
The 5.9 merge moved this function io_uring, which means that we don't
need to retain the generic nature of it. Clean up this part by removing
redundant checks, and just inlining the small remainder in
io_rw_should_retry().
No functional changes in this patch.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/io_uring.c | 41 |
1 files changed, 11 insertions, 30 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index 346a3eb84785..4b102d9ad846 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -3074,27 +3074,6 @@ static int io_async_buf_func(struct wait_queue_entry *wait, unsigned mode, return 1; } -static inline int kiocb_wait_page_queue_init(struct kiocb *kiocb, - struct wait_page_queue *wait, - wait_queue_func_t func, - void *data) -{ - /* Can't support async wakeup with polled IO */ - if (kiocb->ki_flags & IOCB_HIPRI) - return -EINVAL; - if (kiocb->ki_filp->f_mode & FMODE_BUF_RASYNC) { - wait->wait.func = func; - wait->wait.private = data; - wait->wait.flags = 0; - INIT_LIST_HEAD(&wait->wait.entry); - kiocb->ki_flags |= IOCB_WAITQ; - kiocb->ki_waitq = wait; - return 0; - } - - return -EOPNOTSUPP; -} - /* * This controls whether a given IO request should be armed for async page * based retry. If we return false here, the request is handed to the async @@ -3109,16 +3088,17 @@ static inline int kiocb_wait_page_queue_init(struct kiocb *kiocb, */ static bool io_rw_should_retry(struct io_kiocb *req) { + struct wait_page_queue *wait = &req->io->rw.wpq; struct kiocb *kiocb = &req->rw.kiocb; - int ret; /* never retry for NOWAIT, we just complete with -EAGAIN */ if (req->flags & REQ_F_NOWAIT) return false; /* Only for buffered IO */ - if (kiocb->ki_flags & IOCB_DIRECT) + if (kiocb->ki_flags & (IOCB_DIRECT | IOCB_HIPRI)) return false; + /* * just use poll if we can, and don't attempt if the fs doesn't * support callback based unlocks @@ -3126,14 +3106,15 @@ static bool io_rw_should_retry(struct io_kiocb *req) if (file_can_poll(req->file) || !(req->file->f_mode & FMODE_BUF_RASYNC)) return false; - ret = kiocb_wait_page_queue_init(kiocb, &req->io->rw.wpq, - io_async_buf_func, req); - if (!ret) { - io_get_req_task(req); - return true; - } + wait->wait.func = io_async_buf_func; + wait->wait.private = req; + wait->wait.flags = 0; + INIT_LIST_HEAD(&wait->wait.entry); + kiocb->ki_flags |= IOCB_WAITQ; + kiocb->ki_waitq = wait; - return false; + io_get_req_task(req); + return true; } static int io_iter_do_read(struct io_kiocb *req, struct iov_iter *iter) |