diff options
Diffstat (limited to 'block/qcow2.c')
| -rw-r--r-- | block/qcow2.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/block/qcow2.c b/block/qcow2.c index 8e024007db..d39882785d 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -4187,7 +4187,8 @@ qcow2_co_preadv_compressed(BlockDriverState *bs, coffset = file_cluster_offset & s->cluster_offset_mask; nb_csectors = ((file_cluster_offset >> s->csize_shift) & s->csize_mask) + 1; - csize = nb_csectors * 512 - (coffset & 511); + csize = nb_csectors * QCOW2_COMPRESSED_SECTOR_SIZE - + (coffset & ~QCOW2_COMPRESSED_SECTOR_MASK); buf = g_try_malloc(csize); if (!buf) { |