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io_uring: check file O_NONBLOCK state for accept 

If the socket is O_NONBLOCK, we should complete the accept request
with -EAGAIN when data is not ready.

Signed-off-by: Jiufei Xue <jiufei.xue@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jiufei Xue 2020-06-10 13:41:59 +08:00 committed by Jens Axboe
parent 405a5d2b27
commit e697deed83
1 changed files with 3 additions and 0 deletions
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3
fs/io_uring.c
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@ -3909,6 +3909,9 @@ static int io_accept(struct io_kiocb *req, bool force_nonblock)
unsigned int file_flags = force_nonblock ? O_NONBLOCK : 0;
int ret;
if (req->file->f_flags & O_NONBLOCK)
req->flags |= REQ_F_NOWAIT;
ret = __sys_accept4_file(req->file, file_flags, accept->addr,
accept->addr_len, accept->flags,
accept->nofile);