linux-kernel - Re: [PATCH 2/3] scsi: ufs: Delete an error message for a failed memory allocation in ufshcd_memory

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Date:   Wed, 26 Apr 2017 11:27:22 -0700
From:   Joe Perches <joe@...ches.com>
To:     Subhash Jadavani <subhashj@...eaurora.org>,
        SF Markus Elfring <elfring@...rs.sourceforge.net>
Cc:     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: [PATCH 2/3] scsi: ufs: Delete an error message for a failed
 memory allocation in ufshcd_memory_alloc()

On Wed, 2017-04-26 at 10:57 -0700, Subhash Jadavani wrote:
> PS: ufshcd_memory_alloc() also does some DMA coherent memory allocation 
> (via dmam_alloc_coherent() APIs) and tries to print out the message on 
> allocation failure. Although i don't know "out of memory" messages will 
> be printed out by dmam_alloc_coherent() APIs or not. If it does print it 
> out then we might want to remove our local memory allocation failure log 
> messages.

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