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authorMax Reitz <mreitz@redhat.com>2013-09-03 10:09:53 +0200
committerKevin Wolf <kwolf@redhat.com>2013-09-12 10:12:46 +0200
commitb6481f376bc65894910dd98db3f299d698817106 (patch)
treeb5c9a01533dac47f1ae3ecd569cc6f41227a719e /block/qcow2.c
parent32b6444d23d0ff618d73e5b766600cd258066169 (diff)
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qcow2: Save refcount order in BDRVQcowState
Save the image refcount order in BDRVQcowState. This will be relevant for future code supporting different refcount orders than four and also for code that needs to verify a certain refcount order for an opened image. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block/qcow2.c')
-rw-r--r--block/qcow2.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/block/qcow2.c b/block/qcow2.c
index c9e266e..27203f8 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -455,6 +455,7 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags)
ret = -ENOTSUP;
goto fail;
}
+ s->refcount_order = header.refcount_order;
if (header.cluster_bits < MIN_CLUSTER_BITS ||
header.cluster_bits > MAX_CLUSTER_BITS) {
@@ -1143,7 +1144,7 @@ int qcow2_update_header(BlockDriverState *bs)
.incompatible_features = cpu_to_be64(s->incompatible_features),
.compatible_features = cpu_to_be64(s->compatible_features),
.autoclear_features = cpu_to_be64(s->autoclear_features),
- .refcount_order = cpu_to_be32(3 + REFCOUNT_SHIFT),
+ .refcount_order = cpu_to_be32(s->refcount_order),
.header_length = cpu_to_be32(header_length),
};