On 28.06.20 13:02, Alberto Garcia wrote: > The L2 bitmap needs to be updated after each write to indicate what > new subclusters are now allocated. This needs to happen even if the > cluster was already allocated and the L2 entry was otherwise valid. > > In some cases however a write operation doesn't need change the L2 > bitmap (because all affected subclusters were already allocated). This > is detected in calculate_l2_meta(), and qcow2_alloc_cluster_link_l2() > is never called in those cases. > > Signed-off-by: Alberto Garcia <be...@igalia.com> > Reviewed-by: Eric Blake <ebl...@redhat.com> > --- > block/qcow2-cluster.c | 18 ++++++++++++++++++ > 1 file changed, 18 insertions(+)
Reviewed-by: Max Reitz <mre...@redhat.com>
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