diff options
| author | Jens Axboe <axboe@kernel.dk> | 2020-01-14 03:23:24 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-01-14 03:25:29 +0100 |
| commit | 74566df3a71c1b92da608868cca787557d8be7b2 (patch) | |
| tree | 997c1dad8033b31b8898501b14be2082bc8ac7e2 /fs | |
| parent | io_uring: remove punt of short reads to async context (diff) | |
| download | linux-74566df3a71c1b92da608868cca787557d8be7b2.tar.xz linux-74566df3a71c1b92da608868cca787557d8be7b2.zip | |
io_uring: don't setup async context for read/write fixed
We don't need it, and if we have it, then the retry handler will attempt
to copy the non-existent iovec with the inline iovec, with a segment
count that doesn't make sense.
Fixes: f67676d160c6 ("io_uring: ensure async punted read/write requests copy iovec")
Reported-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/io_uring.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index 38b54051facd..8321c2f5589b 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -1786,6 +1786,9 @@ static int io_setup_async_rw(struct io_kiocb *req, ssize_t io_size, struct iovec *iovec, struct iovec *fast_iov, struct iov_iter *iter) { + if (req->opcode == IORING_OP_READ_FIXED || + req->opcode == IORING_OP_WRITE_FIXED) + return 0; if (!req->io && io_alloc_async_ctx(req)) return -ENOMEM; |