block: assert that bs->request_alignment is a power of 2

at least bdrv_co_preadv/pwritev expect this.

Signed-off-by: Peter Lieven <pl@kamp.de>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Peter Lieven 2016-05-30 13:59:59 +02:00 committed by Kevin Wolf
parent ebd2f9e7db
commit 107d433cbb

View File

@ -1018,7 +1018,7 @@ static int bdrv_open_common(BlockDriverState *bs, BdrvChild *file,
assert(bdrv_opt_mem_align(bs) != 0);
assert(bdrv_min_mem_align(bs) != 0);
assert((bs->request_alignment != 0) || bdrv_is_sg(bs));
assert(is_power_of_2(bs->request_alignment) || bdrv_is_sg(bs));
qemu_opts_del(opts);
return 0;