linux-kernel - Re: [PATCH v2 1/2] Making si

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Date:	Wed, 18 Jan 2012 06:09:04 -0800
From:	Greg KH <gregkh@...e.de>
To:	Pekka Enberg <penberg@...nel.org>
Cc:	Leonid Moiseichuk <leonid.moiseichuk@...ia.com>,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	cesarb@...arb.net, kamezawa.hiroyu@...fujitsu.com,
	emunson@...bm.net, aarcange@...hat.com, riel@...hat.com,
	mel@....ul.ie, rientjes@...gle.com, dima@...roid.com,
	rebecca@...roid.com, san@...gle.com, akpm@...ux-foundation.org,
	vesa.jaaskelainen@...ia.com
Subject: Re: [PATCH v2 1/2] Making si_swapinfo exportable

On Wed, Jan 18, 2012 at 12:34:19PM +0200, Pekka Enberg wrote:
> On Tue, Jan 17, 2012 at 3:22 PM, Leonid Moiseichuk
> <leonid.moiseichuk@...ia.com> wrote:
> > If we will make si_swapinfo() exportable it could be called from modules.
> > Otherwise modules have no interface to obtain information about swap usage.
> > Change made in the same way as si_meminfo() declared.
> >
> > Signed-off-by: Leonid Moiseichuk <leonid.moiseichuk@...ia.com>
> > ---
> >  mm/swapfile.c |    3 +++
> >  1 files changed, 3 insertions(+), 0 deletions(-)
> >
> > diff --git a/mm/swapfile.c b/mm/swapfile.c
> > index b1cd120..192cc25 100644
> > --- a/mm/swapfile.c
> > +++ b/mm/swapfile.c
> > @@ -5,10 +5,12 @@
> >  *  Swap reorganised 29.12.95, Stephen Tweedie
> >  */
> >
> > +#include <linux/export.h>
> >  #include <linux/mm.h>
> >  #include <linux/hugetlb.h>
> >  #include <linux/mman.h>
> >  #include <linux/slab.h>
> > +#include <linux/kernel.h>
> >  #include <linux/kernel_stat.h>
> >  #include <linux/swap.h>
> >  #include <linux/vmalloc.h>
> > @@ -2177,6 +2179,7 @@ void si_swapinfo(struct sysinfo *val)
> >        val->totalswap = total_swap_pages + nr_to_be_unused;
> >        spin_unlock(&swap_lock);
> >  }
> > +EXPORT_SYMBOL(si_swapinfo);

EXPORT_SYMBOL_GPL() perhaps?
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