From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pekka Enberg Subject: Re: allowed pages in the block later, was Re: [Ext2-devel] [PATCH] ext3: avoid sending down non-refcounted pages Date: Thu, 8 Dec 2005 15:58:46 +0200 Message-ID: <84144f020512080558tb9bb6bbjf91e72ad3d9ccaa6@mail.gmail.com> References: <20051208180900T.fujita.tomonori@lab.ntt.co.jp> <20051208101833.GM14509@schatzie.adilger.int> <20051208134239.GA13376@infradead.org> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Return-path: Received: from nproxy.gmail.com ([64.233.182.199]:35117 "EHLO nproxy.gmail.com") by vger.kernel.org with ESMTP id S932102AbVLHN6r convert rfc822-to-8bit (ORCPT ); Thu, 8 Dec 2005 08:58:47 -0500 Received: by nproxy.gmail.com with SMTP id x29so201692nfb for ; Thu, 08 Dec 2005 05:58:46 -0800 (PST) To: Christoph Hellwig , FUJITA Tomonori , michaelc@cs.wisc.edu, linux-fsdevel@vger.kernel.org, ext2-devel@lists.sourceforge.net, open-iscsi@googlegroups.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org In-Reply-To: <20051208134239.GA13376@infradead.org> Content-Disposition: inline Sender: linux-fsdevel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org Hi Christoph, On 12/8/05, Christoph Hellwig wrote: > One way to work around that would be to detect kmalloced pages and use > a slowpath for that. The major issues with that is that we don't have a > reliable way to detect if a given struct page comes from the slab allocator > or not. Why doesn't PageSlab work for you? Pekka