linux-kernel - Re: Checking error messages for failed memory allocations

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Message-ID: <f6da1799-02a1-b1dc-edcb-a2ea5563b51a@users.sourceforge.net>
Date:   Wed, 26 Apr 2017 20:50:13 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     Joe Perches <joe@...ches.com>
Cc:     Subhash Jadavani <subhashj@...eaurora.org>,
        linux-scsi@...r.kernel.org,
        "James E. J. Bottomley" <jejb@...ux.vnet.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Vinayak Holikatti <vinholikatti@...il.com>,
        LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org, Wolfram Sang <wsa@...-dreams.de>,
        linux-scsi-owner@...r.kernel.org
Subject: Re: Checking error messages for failed memory allocations

> Basically most everything that has a gfp_t argument does a
> dump_stack() on OOM unless __GFP_NOWARN is specified by that gfp_t.

How do you think about to improve any programming interface documentation
around such a function property?

Are there any special checks needed for function implementations
which can pass the flag “__GFP_NOWARN”?

Regards,
Markus