tree ebb9688b7038d2ec980ab1d3bbc798b874033406
parent d4e7cd36a90e38e0276d6ce0c20f5ccef17ec38c
author Jens Axboe <axboe@kernel.dk> 1597532322 -0700
committer Jens Axboe <axboe@kernel.dk> 1597532322 -0700

io_uring: short circuit -EAGAIN for blocking read attempt

One case was missed in the short IO retry handling, and that's hitting
-EAGAIN on a blocking attempt read (eg from io-wq context). This is a
problem on sockets that are marked as non-blocking when created, they
don't carry any REQ_F_NOWAIT information to help us terminate them
instead of perpetually retrying.

Fixes: 227c0c9673d8 ("io_uring: internally retry short reads")
Signed-off-by: Jens Axboe <axboe@kernel.dk>