Re: vhost/scsi: Delete error messages for failed memory allocations in five functions

From: SF Markus Elfring <elfring@users.sourceforge.net>
To: Stefan Hajnoczi <stefanha@gmail.com>
Cc: kvm@vger.kernel.org, "Michael S. Tsirkin" <mst@redhat.com>,
	netdev@vger.kernel.org, Wolfram Sang <wsa@the-dreams.de>,
	kernel-janitors@vger.kernel.org,
	LKML <linux-kernel@vger.kernel.org>,
	virtualization@lists.linux-foundation.org
Subject: Re: vhost/scsi: Delete error messages for failed memory allocations in five functions
Date: Mon, 22 May 2017 13:34:34 +0200	[thread overview]
Message-ID: <e6658e56-a2b0-4ecc-0a95-0ba193ff2c97__24359.9851419733$1495452891$gmane$org@users.sourceforge.net> (raw)
In-Reply-To: <20170522112320.GA22806@stefanha-x1.localdomain>

>> Do you find information from a Linux allocation failure report sufficient
>> for any function implementations here?
> 
> If kmalloc() and friends guarantee to print a warning and backtrace on
> every allocation failure, then there's no need for error messages in
> callers.
> 
> That seems like good justification that can go in the commit
> description, but I'm not sure if kmalloc() and friends guarantee to show
> a message (not just the first time, but for every failed allocation)?

I am also looking for a more complete and easier accessible documentation
for this aspect of the desired exception handling.
How would we like to resolve any remaining open issues there?

Regards,
Markus