linux-kernel - Re: [patch 5/6] mmu_notifier: Support for drivers with revers maps (f.e. for XPmem)

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Date:	Sat, 16 Feb 2008 11:28:08 -0800 (PST)
From:	Christoph Lameter <clameter@....com>
To:	Andrew Morton <akpm@...ux-foundation.org>
cc:	Andrea Arcangeli <andrea@...ranet.com>, Robin Holt <holt@....com>,
	Avi Kivity <avi@...ranet.com>, Izik Eidus <izike@...ranet.com>,
	kvm-devel@...ts.sourceforge.net,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	general@...ts.openfabrics.org,
	Steve Wise <swise@...ngridcomputing.com>,
	Roland Dreier <rdreier@...co.com>,
	Kanoj Sarcar <kanojsarcar@...oo.com>, steiner@....com,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	daniel.blueman@...drics.com
Subject: Re: [patch 5/6] mmu_notifier: Support for drivers with revers maps
 (f.e. for XPmem)

On Fri, 15 Feb 2008, Andrew Morton wrote:

> > +#define mmu_rmap_notifier(function, args...)				\
> > +	do {								\
> > +		struct mmu_rmap_notifier *__mrn;			\
> > +		struct hlist_node *__n;					\
> > +									\
> > +		rcu_read_lock();					\
> > +		hlist_for_each_entry_rcu(__mrn, __n,			\
> > +				&mmu_rmap_notifier_list, hlist)		\
> > +			if (__mrn->ops->function)			\
> > +				__mrn->ops->function(__mrn, args);	\
> > +		rcu_read_unlock();					\
> > +	} while (0);
> > +
> 
> buggy macro: use locals.

Ok. Same as the non rmap version.

> > +EXPORT_SYMBOL(mmu_rmap_export_page);
> 
> The other patch used EXPORT_SYMBOL_GPL.

Ok will make that consistent.


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