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Date:   Mon, 8 Aug 2022 13:10:27 +0200
From:   Stefano Garzarella <sgarzare@...hat.com>
To:     Arseniy Krasnov <AVKrasnov@...rdevices.ru>
Cc:     "David S. Miller" <davem@...emloft.net>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        "kys@...rosoft.com" <kys@...rosoft.com>,
        "haiyangz@...rosoft.com" <haiyangz@...rosoft.com>,
        "sthemmin@...rosoft.com" <sthemmin@...rosoft.com>,
        "wei.liu@...nel.org" <wei.liu@...nel.org>,
        Dexuan Cui <decui@...rosoft.com>,
        Stefan Hajnoczi <stefanha@...hat.com>,
        Bryan Tan <bryantan@...are.com>,
        Vishnu Dasa <vdasa@...are.com>,
        VMware PV-Drivers Reviewers <pv-drivers@...are.com>,
        Krasnov Arseniy <oxffffaa@...il.com>,
        "virtualization@...ts.linux-foundation.org" 
        <virtualization@...ts.linux-foundation.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        kernel <kernel@...rdevices.ru>
Subject: Re: [RFC PATCH v3 9/9] vsock_test: POLLIN + SO_RCVLOWAT test

On Wed, Aug 03, 2022 at 02:07:58PM +0000, Arseniy Krasnov wrote:
>This adds test to check,that when poll() returns POLLIN,POLLRDNORM bits,
>next read call won't block.
>
>Signed-off-by: Arseniy Krasnov <AVKrasnov@...rdevices.ru>
>---
> tools/testing/vsock/vsock_test.c | 107 +++++++++++++++++++++++++++++++
> 1 file changed, 107 insertions(+)
>
>diff --git a/tools/testing/vsock/vsock_test.c b/tools/testing/vsock/vsock_test.c
>index dc577461afc2..920dc5d5d979 100644
>--- a/tools/testing/vsock/vsock_test.c
>+++ b/tools/testing/vsock/vsock_test.c
>@@ -18,6 +18,7 @@
> #include <sys/socket.h>
> #include <time.h>
> #include <sys/mman.h>
>+#include <poll.h>
>
> #include "timeout.h"
> #include "control.h"
>@@ -596,6 +597,107 @@ static void test_seqpacket_invalid_rec_buffer_server(const struct test_opts *opt
> 	close(fd);
> }
>
>+static void test_stream_poll_rcvlowat_server(const struct test_opts *opts)
>+{
>+#define RCVLOWAT_BUF_SIZE 128

Since we use this macro on both server and client functions, I suggest 
to move this define outside the function.

Other than that the test LGTM. I also ran it and everything is fine :-) 
thanks for adding it!

Reviewed-by: Stefano Garzarella <sgarzare@...hat.com>

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