From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: [PATCH 06/13] block: Add bio_reset() Date: Fri, 18 May 2012 09:16:08 -0700 Message-ID: <20120518161608.GF19388@google.com> References: <9953623f6fae97018e59d96971a2612caf6c01e7.1337308722.git.koverstreet@google.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-bcache@vger.kernel.org, linux-kernel@vger.kernel.org, dm-devel@redhat.com, linux-fsdevel@vger.kernel.org, axboe@kernel.dk, agk@redhat.com, neilb@suse.de To: koverstreet@google.com Return-path: Content-Disposition: inline In-Reply-To: <9953623f6fae97018e59d96971a2612caf6c01e7.1337308722.git.koverstreet@google.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org Hello, On Thu, May 17, 2012 at 10:59:53PM -0400, koverstreet@google.com wrote: > From: Kent Overstreet > > Reusing bios is something that's been highly frowned upon in the past, > but driver code keeps doing it anyways. If it's going to happen anyways, > we should provide a generic method. > > This'll help with getting rid of bi_destructor. It would be nice to explain a bit why this helps bi_destructor removal. > +#define BIO_RESET_OFFSET offsetof(struct bio, bi_max_vecs) Maybe better named BIO_RESET_BYTES? As offset tends to indicate the start of a region. Thanks. -- tejun