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From: Joe Perches <joe@perches.com>
To: Denis Efremov <efremov@linux.com>,
	"Martin K. Petersen" <martin.petersen@oracle.com>,
	"James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] scsi: libcxgbi: use kvzalloc instead of opencoded kzalloc/vzalloc
Date: Fri, 31 Jul 2020 15:24:33 -0700
Message-ID: <8638183f559c0f8f8d377bd0a6c91903b2c588df.camel@perches.com> (raw)
In-Reply-To: <70fb8220-2102-adb5-bbe6-9c2ea74a0623@linux.com>

On Sat, 2020-08-01 at 01:10 +0300, Denis Efremov wrote:
> 
> On 8/1/20 12:58 AM, Joe Perches wrote:
> > On Sat, 2020-08-01 at 00:55 +0300, Denis Efremov wrote:
> > > Remove cxgbi_alloc_big_mem(), cxgbi_free_big_mem() functions
> > > and use kvzalloc/kvfree instead.
> > 
> > Sensible, thanks.
> > 
> > > diff --git a/drivers/scsi/cxgbi/libcxgbi.c b/drivers/scsi/cxgbi/libcxgbi.c
> > []
> > > @@ -77,9 +77,9 @@ int cxgbi_device_portmap_create(struct cxgbi_device *cdev, unsigned int base,
> > >  {
> > >  	struct cxgbi_ports_map *pmap = &cdev->pmap;
> > >  
> > > -	pmap->port_csk = cxgbi_alloc_big_mem(max_conn *
> > > -					     sizeof(struct cxgbi_sock *),
> > > -					     GFP_KERNEL);
> > > +	pmap->port_csk = kvzalloc(array_size(max_conn,
> > > +					     sizeof(struct cxgbi_sock *)),
> > > +				  GFP_KERNEL);
> > 
> > missing __GFP_NOWARN
> > 
> 
> kvmalloc_node adds __GFP_NOWARN internally to kmalloc call
> https://elixir.bootlin.com/linux/v5.8-rc4/source/mm/util.c#L568

Only when there's a fallback, and the fallback does not.



  reply index

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-31 21:55 Denis Efremov
2020-07-31 21:58 ` Joe Perches
2020-07-31 22:10   ` Denis Efremov
2020-07-31 22:24     ` Joe Perches [this message]
2020-08-01  7:51       ` Denis Efremov
2020-08-01  7:58         ` Denis Efremov
2020-08-01  8:10         ` Joe Perches
2020-08-01 13:28           ` Denis Efremov
2020-08-01 13:31 ` [PATCH v2] " Denis Efremov

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