iscsi_aio_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors, BlockDriverCompletionFunc *cb, void *opaque) { IscsiLun *iscsilun = bs->opaque; struct iscsi_context *iscsi = iscsilun->iscsi; IscsiAIOCB *acb; struct unmap_list list[1]; acb = qemu_aio_get(&iscsi_aiocb_info, bs, cb, opaque); acb->iscsilun = iscsilun; acb->canceled = 0; acb->bh = NULL; acb->status = -EINPROGRESS; acb->buf = NULL; list[0].lba = sector_qemu2lun(sector_num, iscsilun); list[0].num = nb_sectors * BDRV_SECTOR_SIZE / iscsilun->block_size; acb->task = iscsi_unmap_task(iscsi, iscsilun->lun, 0, 0, &list[0], 1, iscsi_unmap_cb, acb); if (acb->task == NULL) { error_report("iSCSI: Failed to send unmap command. %s", iscsi_get_error(iscsi)); qemu_aio_release(acb); return NULL; } iscsi_set_events(iscsilun); return &acb->common; }