static BlockDriverAIOCB *rbd_start_aio(BlockDriverState *bs, int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, BlockDriverCompletionFunc *cb, void *opaque, RBDAIOCmd cmd) { RBDAIOCB *acb; RADOSCB *rcb; rbd_completion_t c; int64_t off, size; char *buf; int r; BDRVRBDState *s = bs->opaque; acb = qemu_aio_get(&rbd_aiocb_info, bs, cb, opaque); acb->cmd = cmd; acb->qiov = qiov; if (cmd == RBD_AIO_DISCARD) { acb->bounce = NULL; } else { acb->bounce = qemu_blockalign(bs, qiov->size); } acb->ret = 0; acb->error = 0; acb->s = s; acb->cancelled = 0; acb->bh = NULL; acb->status = -EINPROGRESS; if (cmd == RBD_AIO_WRITE) { qemu_iovec_to_buf(acb->qiov, 0, acb->bounce, qiov->size); } buf = acb->bounce; off = sector_num * BDRV_SECTOR_SIZE; size = nb_sectors * BDRV_SECTOR_SIZE; s->qemu_aio_count++; /* All the RADOSCB */ rcb = g_malloc(sizeof(RADOSCB)); rcb->done = 0; rcb->acb = acb; rcb->buf = buf; rcb->s = acb->s; rcb->size = size; r = rbd_aio_create_completion(rcb, (rbd_callback_t) rbd_finish_aiocb, &c); if (r < 0) { goto failed; } switch (cmd) { case RBD_AIO_WRITE: r = rbd_aio_write(s->image, off, size, buf, c); break; case RBD_AIO_READ: r = rbd_aio_read(s->image, off, size, buf, c); break; case RBD_AIO_DISCARD: r = rbd_aio_discard_wrapper(s->image, off, size, c); break; default: r = -EINVAL; } if (r < 0) { goto failed; } return &acb->common; failed: g_free(rcb); s->qemu_aio_count--; qemu_aio_release(acb); return NULL; }
static BlockDriverAIOCB *rbd_start_aio(BlockDriverState *bs, int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, BlockDriverCompletionFunc *cb, void *opaque, RBDAIOCmd cmd) { RBDAIOCB *acb; RADOSCB *rcb; rbd_completion_t c; int64_t off, size; char *buf; int r; BDRVRBDState *s = bs->opaque; acb = qemu_aio_get(&rbd_aiocb_info, bs, cb, opaque); acb->cmd = cmd; acb->qiov = qiov; if (cmd == RBD_AIO_DISCARD) { acb->bounce = NULL; } else { acb->bounce = qemu_blockalign(bs, qiov->size); } acb->ret = 0; acb->error = 0; acb->s = s; acb->cancelled = 0; acb->bh = NULL; acb->status = -EINPROGRESS; if (cmd == RBD_AIO_WRITE) { qemu_iovec_to_buf(acb->qiov, 0, acb->bounce, qiov->size); } buf = acb->bounce; off = sector_num * BDRV_SECTOR_SIZE; size = nb_sectors * BDRV_SECTOR_SIZE; s->qemu_aio_count++;   rcb = g_malloc(sizeof(RADOSCB)); rcb->done = 0; rcb->acb = acb; rcb->buf = buf; rcb->s = acb->s; rcb->size = size; r = rbd_aio_create_completion(rcb, (rbd_callback_t) rbd_finish_aiocb, &c); if (r < 0) { goto failed; } switch (cmd) { case RBD_AIO_WRITE: r = rbd_aio_write(s->image, off, size, buf, c); break; case RBD_AIO_READ: r = rbd_aio_read(s->image, off, size, buf, c); break; case RBD_AIO_DISCARD: r = rbd_aio_discard_wrapper(s->image, off, size, c); break; default: r = -EINVAL; } if (r < 0) { goto failed; } return &acb->common; failed: g_free(rcb); s->qemu_aio_count--; qemu_aio_release(acb); return NULL; }