From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hans Reiser Subject: Re: batched write Date: Mon, 19 Jun 2006 13:47:57 -0700 Message-ID: <44970D7D.9070001@namesys.com> References: <44736D3E.8090808@namesys.com> <20060524175312.GA3579@zero> <44749E24.40203@namesys.com> <20060608110044.GA5207@suse.de> <1149766000.6336.29.camel@tribesman.namesys.com> <20060608121006.GA8474@infradead.org> <1150322912.6322.129.camel@tribesman.namesys.com> <20060617100458.0be18073.akpm@osdl.org> <20060619162740.GA5817@schatzie.adilger.int> <4496D606.8070402@namesys.com> <20060619185049.GH5817@schatzie.adilger.int> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: Andrew Morton , "Vladimir V. Saveliev" , hch@infradead.org, Reiserfs-Dev@namesys.com, Linux-Kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Return-path: Received: from rwcrmhc11.comcast.net ([216.148.227.151]:60136 "EHLO rwcrmhc11.comcast.net") by vger.kernel.org with ESMTP id S932269AbWFSUr6 (ORCPT ); Mon, 19 Jun 2006 16:47:58 -0400 To: Andreas Dilger In-Reply-To: <20060619185049.GH5817@schatzie.adilger.int> Sender: linux-fsdevel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org Andreas Dilger wrote: > >If the VFS supported delayed allocation it would call into the filesystem >on a per-sys_write basis > Is it necessary for VFS to specify that it is for delayed allocation that it does it, or can it be a more generic sort of per sys-write call? >to allow the filesystem to RESERVE space for all >of the pages in the write call, and then later (under memory pressure, >page aging, or even "pull" from the fs) submit a whole batch of contiguous >pages to the fs efficiently (via ->fill_pages() or whatever). > >