diff options
| author | Jens Axboe <axboe@kernel.dk> | 2020-05-19 21:20:27 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-05-19 21:20:27 -0600 |
| commit | b532576ed39efe3b351ae8320b2ab67a4c4c3719 (patch) | |
| tree | 52a03cd85fefa3df584a26813bc5a63fdaf39fc8 /fs/io_uring.c | |
| parent | 4f4eeba87cc731b200bff9372d14a80f5996b277 (diff) | |
| download | linux-b532576ed39efe3b351ae8320b2ab67a4c4c3719.tar.bz2 | |
io_uring: don't add non-IO requests to iopoll pending list
We normally disable any commands that aren't specifically poll commands
for a ring that is setup for polling, but we do allow buffer provide and
remove commands to support buffer selection for polled IO. Once a
request is issued, we add it to the poll list to poll for completion. But
we should not do that for non-IO commands, as those request complete
inline immediately and aren't pollable. If we do, we can leave requests
on the iopoll list after they are freed.
Fixes: ddf0322db79c ("io_uring: add IORING_OP_PROVIDE_BUFFERS")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/io_uring.c')
| -rw-r--r-- | fs/io_uring.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index d43f7e98e07a..f9f79ac5ac7b 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -5306,7 +5306,8 @@ static int io_issue_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe, if (ret) return ret; - if (ctx->flags & IORING_SETUP_IOPOLL) { + /* If the op doesn't have a file, we're not polling for it */ + if ((ctx->flags & IORING_SETUP_IOPOLL) && req->file) { const bool in_async = io_wq_current_is_worker(); if (req->result == -EAGAIN) |