From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: Re: Does ext4 send FUA to flush disk cache Date: Tue, 12 Apr 2011 00:40:18 -0400 Message-ID: <20110412044018.GA4245@infradead.org> References: <20110411231606.GA9406@infradead.org> <20110412021423.GC3682@thunk.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Christoph Hellwig , Mark Busheman , linux-ext4@vger.kernel.org To: Ted Ts'o Return-path: Received: from bombadil.infradead.org ([18.85.46.34]:36322 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750907Ab1DLEkU (ORCPT ); Tue, 12 Apr 2011 00:40:20 -0400 Content-Disposition: inline In-Reply-To: <20110412021423.GC3682@thunk.org> Sender: linux-ext4-owner@vger.kernel.org List-ID: On Mon, Apr 11, 2011 at 10:14:23PM -0400, Ted Ts'o wrote: > Ah, Jens pushed a patch that I hadn't noticed that appears to > optionally use FUA for the commit block. Thanks for pointing that > out. The commits actually are from Tejun: commit 797e7dbbee0a91fa1349192f18ad5c454997d876 Author: Tejun Heo Date: Fri Jan 6 09:51:03 2006 +0100 [BLOCK] reimplement handling of barrier request Reimplement handling of barrier requests. * Flexible handling to deal with various capabilities of target devices. * Retry support for falling back. * Tagged queues which don't support ordered tag can do ordered. Signed-off-by: Tejun Heo Signed-off-by: Jens Axboe commit 007365ad60387df30f02f01fdc2b6e6432f6c265 Author: Tejun Heo Date: Fri Jan 6 09:53:52 2006 +0100 [BLOCK] scsi: add FUA support to sd Add FUA support for barriers to SCSI disk. Signed-off-by: Tejun Heo Signed-off-by: Jens Axboe