linux-kernel - Re: [Xen-devel] [PATCH RFC 10/12] xen-blkback: make the queue of free requests per backend

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Message-Id: <512F48D302000078000C1E33@nat28.tlf.novell.com>
Date:	Thu, 28 Feb 2013 11:08:51 +0000
From:	"Jan Beulich" <JBeulich@...e.com>
To:	"Roger Pau Monne" <roger.pau@...rix.com>
Cc:	<xen-devel@...ts.xen.org>,
	"Konrad Rzeszutek Wilk" <konrad.wilk@...cle.com>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [Xen-devel] [PATCH RFC 10/12] xen-blkback: make the queue
 of free requests per backend

>>> On 28.02.13 at 11:28, Roger Pau Monne <roger.pau@...rix.com> wrote:
> @@ -122,6 +125,19 @@ static struct xen_blkif *xen_blkif_alloc(domid_t domid)
>  	spin_lock_init(&blkif->free_pages_lock);
>  	INIT_LIST_HEAD(&blkif->free_pages);
>  	blkif->free_pages_num = 0;
> +	blkif->pending_reqs = kzalloc(sizeof(blkif->pending_reqs[0]) *
> +	                              xen_blkif_reqs, GFP_KERNEL);

kcalloc() is preferred in cases like this, I believe.

Jan

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