Re: [PATCH 1/1] io_uring: fix short read retries for non-reg files
From: Pavel Begunkov <asml.silence@gmail.com>
Date: 2021-01-21 03:45:41
Also in:
io-uring
On 20/01/2021 23:09, Pavel Begunkov wrote:
Sockets and other non-regular files may actually expect short reads to happen, don't retry reads for them.
Works well with a quick test, but I think I may have missed a case, please don't take it yet
quoted hunk ↗ jump to hunk
Cc: stable@vger.kernel.org # 5.9+ Suggested-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> --- fs/io_uring.c | 3 +++ 1 file changed, 3 insertions(+)diff --git a/fs/io_uring.c b/fs/io_uring.c index 5f6f1e48954e..544d711b2ef0 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c@@ -3557,6 +3557,9 @@ static int io_read(struct io_kiocb *req, bool force_nonblock, io_size -= ret; copy_iov: + if (!(req->flags & REQ_F_ISREG) && ret > 0) + goto done; + ret2 = io_setup_async_rw(req, iovec, inline_vecs, iter, true); if (ret2) { ret = ret2;
-- Pavel Begunkov