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qcow2: Add qcow2_cluster_is_allocated()

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This helper function tells us if a cluster is allocated (that is,
there is an associated host offset for it).

Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <6d8771c5c79cbdc6c519875a5078e1cc85856d63.1594396418.git.berto@igalia.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Alberto Garcia 2020-07-10 18:12:58 +02:00 • committed by Max Reitz
parent 70d1cbae03
commit c94d037825
1 changed files with 6 additions and 0 deletions
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6
block/qcow2.h
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@ -780,6 +780,12 @@ QCow2SubclusterType qcow2_get_subcluster_type(BlockDriverState *bs,
}
}
static inline bool qcow2_cluster_is_allocated(QCow2ClusterType type)
{
return (type == QCOW2_CLUSTER_COMPRESSED || type == QCOW2_CLUSTER_NORMAL ||
type == QCOW2_CLUSTER_ZERO_ALLOC);
}
/* Check whether refcounts are eager or lazy */
static inline bool qcow2_need_accurate_refcounts(BDRVQcow2State *s)
{