On Mon, Apr 20, 2009 at 03:57:43AM -0400, Mikulas Patocka wrote:
> +static int __clone_and_map_empty_barrier(struct clone_info *ci)
> +{
> + unsigned i, j, n;
> + n = dm_table_get_num_targets(ci->map);
> + for (i = 0; i < n; i++) {
> + struct bio *clone;
> + struct dm_target *ti = dm_table_get_target(ci->map, i);
> + for (j = 0; j < ti->num_flush_requests; j++) {
> + struct dm_target_io *tio = alloc_tio(ci->md);
> + tio->io = ci->io;
> + tio->ti = ti;
> + memset(&tio->info, 0, sizeof(tio->info));
> + tio->info.flush_request = j;
> +
> + clone = bio_alloc_bioset(GFP_NOIO, 0, ci->md->bs);
> + __bio_clone(clone, ci->bio);
> + clone->bi_destructor = dm_bio_destructor;
> +
> + __map_bio(ti, clone, tio);
I'm editing this one a bit, splitting that middle section out into a separate
function to improve readability. (The compiler can optimise it back if it wants.)
Alasdair
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