From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nikita Danilov Subject: Re: Bufferheads & page-cache reference Date: Tue, 15 Feb 2005 22:07:09 +0300 Message-ID: References: <1108409415.20053.1278.camel@dyn318077bld.beaverton.ibm.com> <20050214134058.1402cfed.akpm@osdl.org> <1108430825.20053.1363.camel@dyn318077bld.beaverton.ibm.com> <20050214190556.07c4a0c9.akpm@osdl.org> <1108485967.20053.1438.camel@dyn318077bld.beaverton.ibm.com> <20050215095443.3e646401.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-fsdevel@vger.kernel.org, ext2-devel@lists.sourceforge.net, Badari Pulavarty Received: from [213.85.13.118] ([213.85.13.118]:45185 "EHLO tau.rusteko.ru") by vger.kernel.org with ESMTP id S261838AbVBOTHQ (ORCPT ); Tue, 15 Feb 2005 14:07:16 -0500 To: Andrew Morton In-Reply-To: <20050215095443.3e646401.akpm@osdl.org> (Andrew Morton's message of "Tue, 15 Feb 2005 09:54:43 -0800") Sender: linux-fsdevel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org Andrew Morton writes: > Badari Pulavarty wrote: >> >> Yep. nobh_prepare_write() doesn't add any bufferheads. But >> we call block_write_full_page() even for "nobh" case, which >> does create bufferheads, attaches to the page and operates >> on them.. > > hmm, yeah, OK, we'll attach bh's in that case. It's a rare case though - > when a dirty page falls off the end of the LRU. There's no particular Maybe DB2 dirties pages through mmap? Nikita.