From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jens Axboe Subject: Re: [PATCH] block: remove REQ_HARDBARRIER Date: Sat, 23 Oct 2010 21:07:26 +0200 Message-ID: <4CC3326E.5020009@fusionio.com> References: <1281977523-19335-1-git-send-email-tj@kernel.org> <201008241745.35242.philipp.reisner@linbit.com> <20101022083511.GA7853@lst.de> <201010231318.33517.philipp.reisner@linbit.com> <4CC311D5.9040904@fusionio.com> <20101023165924.GA1395@lst.de> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20101023165924.GA1395@lst.de> Sender: linux-kernel-owner@vger.kernel.org To: Christoph Hellwig Cc: "linux-kernel@vger.kernel.org" , "linux-scsi@vger.kernel.org" List-Id: linux-scsi@vger.kernel.org On 2010-10-23 18:59, Christoph Hellwig wrote: > REQ_HARDBARRIER is dead now, so remove the leftovers. What's left > at this point is: > > - various checks inside the block layer. > - sanity checks in bio based drivers. > - now unused bio_empty_barrier helper. > - Xen blockfront use of BLKIF_OP_WRITE_BARRIER - it's dead for a while, > but Xen really needs to sort out it's barrier situaton. > - setting of ordered tags in uas - dead code copied from old scsi > drivers. > - scsi different retry for barriers - it's dead and should have been > removed when flushes were converted to FS requests. > - blktrace handling of barriers - removed. Someone who knows blktrace > better should add support for REQ_FLUSH and REQ_FUA, though. Thanks Christoph, applied for 2.6.37 (but with a few days of brewing). -- Jens Axboe