linux-kernel - RE: [PATCH v12 net-next 1/1] hv_sock: introduce Hyper-V Sockets

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Date:	Tue, 28 Jun 2016 15:29:47 +0000
From:	Dexuan Cui <decui@...rosoft.com>
To:	David Miller <davem@...emloft.net>
CC:	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
	"olaf@...fle.de" <olaf@...fle.de>,
	"apw@...onical.com" <apw@...onical.com>,
	"jasowang@...hat.com" <jasowang@...hat.com>,
	"vkuznets@...hat.com" <vkuznets@...hat.com>,
	"cavery@...hat.com" <cavery@...hat.com>,
	KY Srinivasan <kys@...rosoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>,
	"joe@...ches.com" <joe@...ches.com>
Subject: RE: [PATCH v12 net-next 1/1] hv_sock: introduce Hyper-V Sockets

> From: David Miller [mailto:davem@...emloft.net]
> Sent: Tuesday, June 28, 2016 21:45
> To: Dexuan Cui <decui@...rosoft.com>
> Cc: gregkh@...uxfoundation.org; netdev@...r.kernel.org; linux-
> kernel@...r.kernel.org; devel@...uxdriverproject.org; olaf@...fle.de;
> apw@...onical.com; jasowang@...hat.com; vkuznets@...hat.com;
> cavery@...hat.com; KY Srinivasan <kys@...rosoft.com>; Haiyang Zhang
> <haiyangz@...rosoft.com>; joe@...ches.com
> Subject: Re: [PATCH v12 net-next 1/1] hv_sock: introduce Hyper-V Sockets
> 
> From: Dexuan Cui <decui@...rosoft.com>
> Date: Tue, 28 Jun 2016 09:59:21 +0000
> 
> > The idea here is: IMO the syscalls sys_read()/write() shoudn't return
> > -ENOMEM, so I have to make sure the buffer allocation succeeds?
> 
> You have to fail if resources cannot be allocated.

OK, I'll try to fix this, probably by returning -EAGAIN or -ERESTARTSYS.

I'll report back ASAP.

Thanks,
-- Dexuan