From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hiroyuki KAMEZAWA Date: Wed, 13 Oct 2004 08:56:48 +0000 Subject: Re: bug in 2.6.9-rc4-mm1 ia64/mm/init.c Message-Id: <416CEF0E.1060406@jp.fujitsu.com> List-Id: References: <16748.57721.66330.638048@napali.hpl.hp.com> <416CEADA.2060207@jp.fujitsu.com> <16748.60002.875945.950324@napali.hpl.hp.com> In-Reply-To: <16748.60002.875945.950324@napali.hpl.hp.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: davidm@hpl.hp.com Cc: akepner@sgi.com, linux-kernel@vger.kernel.org, linux-ia64@vger.kernel.org, akpm@osdl.org, jbarnes@sgi.com David Mosberger wrote: >>>>>>On Wed, 13 Oct 2004 17:44:10 +0900, Hiroyuki KAMEZAWA said: > > > Hiroyuki> My purpose was to reduce # of page fault when > Hiroyuki> ia64_pfn_valid() is called. It is called heavily in > Hiroyuki> bad_range() (in mm/page_alloc.c) now. > > At the expense of ignoring perfectly good memory? Or did I miss something? > > --david Am I ignoring some good memory ? I think GRANULEROUNDDOWN(start)/GRANULEROUNDUP(end) only expand valid pfn range, do I misunderstanding something ? -- Kame