From: Alberto Garcia <berto@igalia.com>
Date: Fri, 10 Jul 2020 16:12:58 +0000 (+0200)
Subject: qcow2: Add qcow2_cluster_is_allocated()
X-Git-Tag: qemu-xen-4.16.0-rc4~677^2~18
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=c94d037825ccecf4819ca63f8838561eba49bc80;p=qemu-xen.git

qcow2: Add qcow2_cluster_is_allocated()

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>
---

diff --git a/block/qcow2.h b/block/qcow2.h
index 3aec6f452a..ea647c8bb5 100644
--- a/block/qcow2.h
+++ b/block/qcow2.h
@@ -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)
 {