From: Christoph Hellwig <hch@infradead.org>
To: Ming Lei <tom.leiming@gmail.com>
Cc: Christoph Hellwig <hch@infradead.org>,
Shaohua Li <shli@kernel.org>, Jens Axboe <axboe@fb.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"open list:SOFTWARE RAID (Multiple Disks) SUPPORT"
<linux-raid@vger.kernel.org>,
linux-block <linux-block@vger.kernel.org>,
NeilBrown <neilb@suse.com>
Subject: Re: [PATCH v1 1/5] block: introduce bio_clone_bioset_partial()
Date: Tue, 14 Feb 2017 08:01:51 -0800 [thread overview]
Message-ID: <20170214160151.GB32705@infradead.org> (raw)
In-Reply-To: <CACVXFVNN3Gtm4Ut5KCmx8REbMYnh3Y2+sAZPto7F40fvGyZ=zw@mail.gmail.com>
On Tue, Feb 14, 2017 at 09:04:26AM +0800, Ming Lei wrote:
> On Mon, Feb 13, 2017 at 9:46 PM, Christoph Hellwig <hch@infradead.org> wrote:
> > On Fri, Feb 10, 2017 at 06:56:13PM +0800, Ming Lei wrote:
> >> md still need bio clone(not the fast version) for behind write,
> >> and it is more efficient to use bio_clone_bioset_partial().
> >>
> >> The idea is simple and just copy the bvecs range specified from
> >> parameters.
> >
> > Given how few users bio_clone_bioset has I wonder if we shouldn't
> > simply add the two new arguments to it instead of adding another
> > indirection.
>
> For md write-behind, looks we have to provide the two arguments,
> could you explain a bit how we can do that by adding another indirection?
I meant to just pass the additional arguments that
bio_clone_bioset_partial has to bio_clone_bioset.
next prev parent reply other threads:[~2017-02-14 16:01 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-10 10:56 [PATCH v1 0/5] md: use bio_clone_fast() Ming Lei
2017-02-10 10:56 ` [PATCH v1 1/5] block: introduce bio_clone_bioset_partial() Ming Lei
2017-02-13 13:46 ` Christoph Hellwig
2017-02-14 1:04 ` Ming Lei
2017-02-14 16:01 ` Christoph Hellwig [this message]
2017-02-15 2:26 ` Ming Lei
2017-02-10 10:56 ` [PATCH v1 2/5] md/raid1: use bio_clone_bioset_partial() in case of write behind Ming Lei
2017-02-13 13:48 ` Christoph Hellwig
2017-02-10 10:56 ` [PATCH v1 3/5] md: fail if mddev->bio_set can't be created Ming Lei
2017-02-13 13:45 ` Christoph Hellwig
2017-02-10 10:56 ` [PATCH v1 4/5] md: remove unnecessary check on mddev Ming Lei
2017-02-13 13:49 ` Christoph Hellwig
2017-02-10 10:56 ` [PATCH v1 5/5] md: fast clone bio in bio_clone_mddev() Ming Lei
2017-02-13 13:49 ` Christoph Hellwig
2017-02-11 0:38 ` [PATCH v1 0/5] md: use bio_clone_fast() Shaohua Li
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