linux-kernel - Re: [PATCH v6 12/13] block: Add bio_clone_bioset(), bio_clone

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Message-ID: <20120822210740.GM19212@google.com>
Date:	Wed, 22 Aug 2012 14:07:40 -0700
From:	Tejun Heo <tj@...nel.org>
To:	Kent Overstreet <koverstreet@...gle.com>
Cc:	linux-bcache@...r.kernel.org, linux-kernel@...r.kernel.org,
	dm-devel@...hat.com, vgoyal@...hat.com, mpatocka@...hat.com,
	bharrosh@...asas.com, Jens Axboe <axboe@...nel.dk>,
	NeilBrown <neilb@...e.de>, Alasdair Kergon <agk@...hat.com>,
	Jeff Garzik <jeff@...zik.org>
Subject: Re: [PATCH v6 12/13] block: Add bio_clone_bioset(),
 bio_clone_kmalloc()

On Wed, Aug 22, 2012 at 10:04:09AM -0700, Kent Overstreet wrote:
> Previously, there was bio_clone() but it only allocated from the fs bio
> set; as a result various users were open coding it and using
> __bio_clone().
> 
> This changes bio_clone() to become bio_clone_bioset(), and then we add
> bio_clone() and bio_clone_kmalloc() as wrappers around it, making use of
> the functionality the last patch adedd.
> 
> This will also help in a later patch changing how bio cloning works.

I'd prefer simply adding @bioset to bio_clone() so that the caller
always has to make the choice consciously.  We're updating all the
callers anyway.

Thanks.

-- 
tejun
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