| commit | aca00cd971c830ad2a71cc881db33275d0a4107c | |
| author | Alberto Garcia <berto@igalia.com> | |
| Fri, 10 Jul 2020 16:13:07 +0000 (10 18:13 +0200) | ||
| committer | Max Reitz <mreitz@redhat.com> | |
| Tue, 25 Aug 2020 06:33:20 +0000 (25 08:33 +0200) | ||
| tree | 89e0208cc299d185080d5015b28d0b9775492f75 | treesnapshot (tar.gz zip) |
| parent | fc2e6528d5c14a15cac586406cb72d0127449178 | commitdiff |
qcow2: Update L2 bitmap in qcow2_alloc_cluster_link_l2()
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 <berto@igalia.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <0875620d49f44320334b6a91c73b3f301f975f38.1594396418.git.berto@igalia.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
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 <berto@igalia.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <0875620d49f44320334b6a91c73b3f301f975f38.1594396418.git.berto@igalia.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
| block/qcow2-cluster.c | diffblobblamehistory |