linux-kernel - Re: [PATCH v7 5/9] block: Kill bi

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Message-ID: <20120828220711.GC1048@moria.home.lan>
Date:	Tue, 28 Aug 2012 15:07:11 -0700
From:	Kent Overstreet <koverstreet@...gle.com>
To:	Tejun Heo <tj@...nel.org>
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>
Subject: Re: [PATCH v7 5/9] block: Kill bi_destructor

On Tue, Aug 28, 2012 at 01:36:13PM -0700, Tejun Heo wrote:
> On Tue, Aug 28, 2012 at 10:37:32AM -0700, Kent Overstreet wrote:
> > @@ -385,7 +386,7 @@ struct bio *bio_kmalloc(gfp_t gfp_mask, unsigned int nr_iovecs)
> >  	bio->bi_flags |= BIO_POOL_NONE << BIO_POOL_OFFSET;
> >  	bio->bi_max_vecs = nr_iovecs;
> >  	bio->bi_io_vec = bio->bi_inline_vecs;
> > -	bio->bi_destructor = bio_kmalloc_destructor;
> > +	bio->bi_pool = NULL;
> 
> Doesn't bio_init() already memset the whole thing?

Yes it does, holdover from BIO_KMALLOC_POOL. Dropping it.
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