linux-kernel - Re: [PATCH] bio: make use of bvec_nr

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Date:	Sat, 26 Jul 2008 12:22:29 +0800
From:	"rae l" <crquan@...il.com>
To:	"Jens Axboe" <axboe@...nel.dk>,
	"Martin K. Petersen" <martin.petersen@...cle.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] bio: make use of bvec_nr_vecs

On Sat, Jul 26, 2008 at 2:11 AM, Denis ChengRq <crquan@...il.com> wrote:
>        bvl = mempool_alloc(bs->bvec_pools[*idx], gfp_mask);
> -       if (bvl) {
> -               struct biovec_slab *bp = bvec_slabs + *idx;
> -
> -               memset(bvl, 0, bp->nr_vecs * sizeof(struct bio_vec));
> -       }
> +       if (bvl)
> +               memset(bvl, 0, bvec_nr_vecs(*idx) * sizeof(struct bio_vec));
and if we have a mempool_zalloc, this can be more simplified,

there was no mempool_zalloc yet, should we create it inlined with
__GFP_ZERO, for this and further use?
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