diff options
| -rw-r--r-- | block.c | 12 |
1 files changed, 5 insertions, 7 deletions
@@ -3034,18 +3034,16 @@ static int coroutine_fn bdrv_aligned_preadv(BlockDriverState *bs, max_nb_sectors = ROUND_UP(MAX(0, total_sectors - sector_num), align >> BDRV_SECTOR_BITS); - if (max_nb_sectors > 0) { + if (nb_sectors < max_nb_sectors) { + ret = drv->bdrv_co_readv(bs, sector_num, nb_sectors, qiov); + } else if (max_nb_sectors > 0) { QEMUIOVector local_qiov; - size_t local_sectors; - - max_nb_sectors = MIN(max_nb_sectors, SIZE_MAX / BDRV_SECTOR_BITS); - local_sectors = MIN(max_nb_sectors, nb_sectors); qemu_iovec_init(&local_qiov, qiov->niov); qemu_iovec_concat(&local_qiov, qiov, 0, - local_sectors * BDRV_SECTOR_SIZE); + max_nb_sectors * BDRV_SECTOR_SIZE); - ret = drv->bdrv_co_readv(bs, sector_num, local_sectors, + ret = drv->bdrv_co_readv(bs, sector_num, max_nb_sectors, &local_qiov); qemu_iovec_destroy(&local_qiov); |