Pavel Begunkov 2df15ef2a9 io_uring: fix short read retries for non-reg files
commit 9a173346bd9e16ab19c7addb8862d95a5cea9feb upstream.

Sockets and other non-regular files may actually expect short reads to
happen, don't retry reads for them. Because non-reg files don't set
FMODE_BUF_RASYNC and so it won't do second/retry do_read, we can filter
out those cases after first do_read() attempt with ret>0.

Cc: stable@vger.kernel.org # 5.9+
Suggested-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-01-27 11:55:15 +01:00
..
2020-10-16 11:11:22 -07:00
2021-01-09 13:46:24 +01:00
2020-11-19 22:38:29 -05:00
2020-11-14 11:26:04 -08:00
2020-12-30 11:54:16 +01:00
2020-09-10 14:03:31 -07:00
2021-01-17 14:17:03 +01:00
2020-10-05 10:38:33 -06:00
2020-10-19 14:28:30 -07:00
\n
2020-10-15 15:03:10 -07:00
2020-08-04 21:02:38 -04:00
2020-09-22 23:45:57 -04:00
2020-07-31 08:16:01 +02:00
2020-08-07 11:33:24 -07:00
2020-10-23 11:33:41 -07:00
2020-10-23 11:33:41 -07:00
2020-07-31 08:16:00 +02:00
2020-10-24 12:40:18 -07:00
2020-09-26 22:55:05 -04:00
2020-08-27 16:06:47 -04:00
2020-06-09 15:40:50 -07:00
2020-07-31 08:16:01 +02:00