diff options
Diffstat (limited to 'block/cow.c')
| -rw-r--r-- | block/cow.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/block/cow.c b/block/cow.c index f4eca10e3f..7450801cb7 100644 --- a/block/cow.c +++ b/block/cow.c @@ -212,7 +212,11 @@ static int coroutine_fn cow_read(BlockDriverState *bs, int64_t sector_num, int ret, n; while (nb_sectors > 0) { - if (cow_co_is_allocated(bs, sector_num, nb_sectors, &n)) { + ret = cow_co_is_allocated(bs, sector_num, nb_sectors, &n); + if (ret < 0) { + return ret; + } + if (ret) { ret = bdrv_pread(bs->file, s->cow_sectors_offset + sector_num * 512, buf, n * 512); |