From mboxrd@z Thu Jan 1 00:00:00 1970 Received: by wa-out-1112.google.com with SMTP id m33so1385594wag.8 for ; Thu, 10 Jan 2008 12:23:08 -0800 (PST) Message-ID: <6934efce0801101223g6b022094qc201a82096994b4c@mail.gmail.com> Date: Thu, 10 Jan 2008 12:23:08 -0800 From: "Jared Hulbert" Subject: Re: [rfc][patch 1/4] include: add callbacks to toggle reference counting for VM_MIXEDMAP pages In-Reply-To: <4785D064.1040501@de.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20071214133817.GB28555@wotan.suse.de> <476B9000.2090707@de.ibm.com> <20071221102052.GB28484@wotan.suse.de> <476B96D6.2010302@de.ibm.com> <20071221104701.GE28484@wotan.suse.de> <1199784954.25114.27.camel@cotte.boeblingen.de.ibm.com> <1199891032.28689.9.camel@cotte.boeblingen.de.ibm.com> <1199891645.28689.22.camel@cotte.boeblingen.de.ibm.com> <6934efce0801091017t7f9041abs62904de3722cadc@mail.gmail.com> <4785D064.1040501@de.ibm.com> Sender: owner-linux-mm@kvack.org Return-Path: To: carsteno@de.ibm.com Cc: Nick Piggin , Linux Memory Management List , Martin Schwidefsky , Heiko Carstens List-ID: > In fact, I consider pfn_valid() broken on arm if it returns > false for a pfn that is perfectly valid for use in a pfnmap/mixedmap > mapping. Remember, my interest in creating VM_MIXEDMAP is in mapping Flash into these pfnmap/mixedmap regions. I don't think it's fair to let pfn_valid() work for Flash pages, at least for now, because there are many things you can't do with them that you can do with RAM. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org