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Message-Id: <20080908120324.B3DA.E1E9C6FF@jp.fujitsu.com>
Date: Mon, 08 Sep 2008 12:07:14 +0900
From: Yasunori Goto <y-goto@...fujitsu.com>
To: Peter Zijlstra <peterz@...radead.org>
Cc: Badari Pulavarty <pbadari@...ibm.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Mel Gorman <mel@....ul.ie>,
Christoph Lameter <cl@...ux-foundation.org>,
linux-mm <linux-mm@...ck.org>,
Linux Kernel ML <linux-kernel@...r.kernel.org>
Subject: Re: [RFC:Patch: 008/008](memory hotplug) remove_pgdat() function
> On Thu, 2008-07-31 at 21:04 +0900, Yasunori Goto wrote:
>
> > +int remove_pgdat(int nid)
> > +{
> > + struct pglist_data *pgdat = NODE_DATA(nid);
> > +
> > + if (cpus_busy_on_node(nid))
> > + return -EBUSY;
> > +
> > + if (sections_busy_on_node(pgdat))
> > + return -EBUSY;
> > +
> > + node_set_offline(nid);
> > + synchronize_sched();
> > + synchronize_srcu(&pgdat_remove_srcu);
> > +
> > + free_pgdat(nid, pgdat);
> > +
> > + return 0;
> > +}
>
> FWIW synchronize_sched() is the wrong function to use here,
> synchronize_rcu() is the right one.
Thanks. I'll fix it.
--
Yasunori Goto
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