diff options
| -rw-r--r-- | block.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/block.c b/block.c index ec3fa503df..da558774e8 100644 --- a/block.c +++ b/block.c @@ -2749,10 +2749,16 @@ int bdrv_write_zeroes(BlockDriverState *bs, int64_t sector_num, */ int bdrv_make_zero(BlockDriverState *bs, BdrvRequestFlags flags) { - int64_t target_size = bdrv_getlength(bs) / BDRV_SECTOR_SIZE; + int64_t target_size; int64_t ret, nb_sectors, sector_num = 0; int n; + target_size = bdrv_getlength(bs); + if (target_size < 0) { + return target_size; + } + target_size /= BDRV_SECTOR_SIZE; + for (;;) { nb_sectors = target_size - sector_num; if (nb_sectors <= 0) { |