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io_uring/net: reshuffle error handling 

We should prioritise send/recv retry cases over failures, they're more
important. Shuffle -ERESTARTSYS after we handled retries.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/d9059691b30d0963b7269fa4a0c81ee7720555e6.1662639236.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2022-09-08 13:20:29 +01:00 коммит произвёл Jens Axboe
Родитель e9a8842854
Коммит 95eafc74be
1 изменённых файлов: 8 добавлений и 8 удалений
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16
io_uring/net.c
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@ -291,13 +291,13 @@ int io_sendmsg(struct io_kiocb *req, unsigned int issue_flags)
if (ret < min_ret) {
if (ret == -EAGAIN && (issue_flags & IO_URING_F_NONBLOCK))
return io_setup_async_msg(req, kmsg, issue_flags);
if (ret == -ERESTARTSYS)
ret = -EINTR;
if (ret > 0 && io_net_retry(sock, flags)) {
sr->done_io += ret;
req->flags |= REQ_F_PARTIAL_IO;
return io_setup_async_msg(req, kmsg, issue_flags);
}
if (ret == -ERESTARTSYS)
ret = -EINTR;
req_set_fail(req);
}
/* fast path, check for non-NULL to avoid function call */
@ -352,8 +352,6 @@ int io_send(struct io_kiocb *req, unsigned int issue_flags)
if (ret < min_ret) {
if (ret == -EAGAIN && (issue_flags & IO_URING_F_NONBLOCK))
return -EAGAIN;
if (ret == -ERESTARTSYS)
ret = -EINTR;
if (ret > 0 && io_net_retry(sock, flags)) {
sr->len -= ret;
sr->buf += ret;
@ -361,6 +359,8 @@ int io_send(struct io_kiocb *req, unsigned int issue_flags)
req->flags |= REQ_F_PARTIAL_IO;
return -EAGAIN;
}
if (ret == -ERESTARTSYS)
ret = -EINTR;
req_set_fail(req);
}
if (ret >= 0)
@ -751,13 +751,13 @@ retry_multishot:
}
return ret;
}
if (ret == -ERESTARTSYS)
ret = -EINTR;
if (ret > 0 && io_net_retry(sock, flags)) {
sr->done_io += ret;
req->flags |= REQ_F_PARTIAL_IO;
return io_setup_async_msg(req, kmsg, issue_flags);
}
if (ret == -ERESTARTSYS)
ret = -EINTR;
req_set_fail(req);
} else if ((flags & MSG_WAITALL) && (kmsg->msg.msg_flags & (MSG_TRUNC | MSG_CTRUNC))) {
req_set_fail(req);
@ -847,8 +847,6 @@ retry_multishot:
return -EAGAIN;
}
if (ret == -ERESTARTSYS)
ret = -EINTR;
if (ret > 0 && io_net_retry(sock, flags)) {
sr->len -= ret;
sr->buf += ret;
@ -856,6 +854,8 @@ retry_multishot:
req->flags |= REQ_F_PARTIAL_IO;
return -EAGAIN;
}
if (ret == -ERESTARTSYS)
ret = -EINTR;
req_set_fail(req);
} else if ((flags & MSG_WAITALL) && (msg.msg_flags & (MSG_TRUNC | MSG_CTRUNC))) {
out_free: