linux-kernel - Re: [PATCH V2 1/2] xen/granttable: Support sub-page grants

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Date:	Fri, 09 Dec 2011 13:19:09 +0800
From:	annie li <annie.li@...cle.com>
To:	Paul Durrant <Paul.Durrant@...rix.com>
CC:	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"konrad.wilk@...cle.com" <konrad.wilk@...cle.com>,
	"jeremy@...p.org" <jeremy@...p.org>,
	Ian Campbell <Ian.Campbell@...rix.com>,
	"kurt.hackel@...cle.com" <kurt.hackel@...cle.com>
Subject: Re: [PATCH V2 1/2] xen/granttable: Support sub-page grants

Hi Paul,

>>> #define get_free_entry()	get_free_entries(1)
Is this necessary? Maybe you defined this to keep consistence with 
put_free_entry(ref)?
But other functions such as gnttab_grant_foreign_transfer and 
gnttab_grant_foreign_access all call get_free_entries(1). Maybe it is 
better to keep initial get_free_entries(1) code?

Thanks
Annie
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