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linux-2.6
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Staging: DST: optimize bio allocation. 

Use bio prepend feature as suggested by Jens Axboe.

Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Evgeniy Polyakov 2009-01-19 20:20:36 +03:00 committed by Greg Kroah-Hartman
parent cac22275ac
commit 3e5510ab0c
1 changed files with 3 additions and 10 deletions
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13
drivers/staging/dst/export.c
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@ -33,7 +33,7 @@ int __init dst_export_init(void)
{
int err = -ENOMEM;
dst_bio_set = bioset_create(32, 32);
dst_bio_set = bioset_create(32, sizeof(struct dst_export_priv));
if (!dst_bio_set)
goto err_out_exit;
@ -424,12 +424,8 @@ static void dst_bio_destructor(struct bio *bio)
__free_page(bv->bv_page);
}
if (priv) {
struct dst_node *n = priv->state->node;
if (priv)
dst_state_put(priv->state);
mempool_free(priv, n->trans_pool);
}
bio_free(bio, dst_bio_set);
}
@ -555,11 +551,8 @@ int dst_process_io(struct dst_state *st)
dst_bio_set);
if (!bio)
goto err_out_exit;
bio->bi_private = NULL;
priv = mempool_alloc(st->node->trans_pool, GFP_KERNEL);
if (!priv)
goto err_out_free;
priv = (struct dst_export_priv *)(((void *)bio) - sizeof (struct dst_export_priv));
priv->state = dst_state_get(st);
priv->bio = bio;