diff --git a/block/qcow2-cache.c b/block/qcow2-cache.c
index b115549..f0dfb69 100644
--- a/block/qcow2-cache.c
+++ b/block/qcow2-cache.c
@@ -28,7 +28,6 @@
 #include "trace.h"
 
 typedef struct Qcow2CachedTable {
-    void*   table;
     int64_t offset;
     bool    dirty;
     int     cache_hits;
@@ -40,39 +39,35 @@ struct Qcow2Cache {
     struct Qcow2Cache*      depends;
     int                     size;
     bool                    depends_on_flush;
+    void                   *table_array;
 };
 
+static inline void *qcow2_cache_get_table_addr(BlockDriverState *bs,
+                    Qcow2Cache *c, int table)
+{
+    BDRVQcowState *s = bs->opaque;
+    return (uint8_t *) c->table_array + (size_t) table * s->cluster_size;
+}
+
 Qcow2Cache *qcow2_cache_create(BlockDriverState *bs, int num_tables)
 {
     BDRVQcowState *s = bs->opaque;
     Qcow2Cache *c;
-    int i;
 
     c = g_new0(Qcow2Cache, 1);
     c->size = num_tables;
     c->entries = g_try_new0(Qcow2CachedTable, num_tables);
-    if (!c->entries) {
-        goto fail;
-    }
-
-    for (i = 0; i < c->size; i++) {
-        c->entries[i].table = qemu_try_blockalign(bs->file, s->cluster_size);
-        if (c->entries[i].table == NULL) {
-            goto fail;
-        }
+    c->table_array = qemu_try_blockalign(bs->file,
+                                         (size_t) num_tables * s->cluster_size);
+
+    if (!c->entries || !c->table_array) {
+        qemu_vfree(c->table_array);
+        g_free(c->entries);
+        g_free(c);
+        c = NULL;
     }
 
     return c;
-
-fail:
-    if (c->entries) {
-        for (i = 0; i < c->size; i++) {
-            qemu_vfree(c->entries[i].table);
-        }
-    }
-    g_free(c->entries);
-    g_free(c);
-    return NULL;
 }
 
 int qcow2_cache_destroy(BlockDriverState* bs, Qcow2Cache *c)
@@ -81,9 +76,9 @@ int qcow2_cache_destroy(BlockDriverState* bs, Qcow2Cache *c)
 
     for (i = 0; i < c->size; i++) {
         assert(c->entries[i].ref == 0);
-        qemu_vfree(c->entries[i].table);
     }
 
+    qemu_vfree(c->table_array);
     g_free(c->entries);
     g_free(c);
 
@@ -151,8 +146,8 @@ static int qcow2_cache_entry_flush(BlockDriverState *bs, Qcow2Cache *c, int i)
         BLKDBG_EVENT(bs->file, BLKDBG_L2_UPDATE);
     }
 
-    ret = bdrv_pwrite(bs->file, c->entries[i].offset, c->entries[i].table,
-        s->cluster_size);
+    ret = bdrv_pwrite(bs->file, c->entries[i].offset,
+                      qcow2_cache_get_table_addr(bs, c, i), s->cluster_size);
     if (ret < 0) {
         return ret;
     }
@@ -304,7 +299,8 @@ static int qcow2_cache_do_get(BlockDriverState *bs, Qcow2Cache *c,
             BLKDBG_EVENT(bs->file, BLKDBG_L2_LOAD);
         }
 
-        ret = bdrv_pread(bs->file, offset, c->entries[i].table, s->cluster_size);
+        ret = bdrv_pread(bs->file, offset, qcow2_cache_get_table_addr(bs, c, i),
+                         s->cluster_size);
         if (ret < 0) {
             return ret;
         }
@@ -319,7 +315,7 @@ static int qcow2_cache_do_get(BlockDriverState *bs, Qcow2Cache *c,
 found:
     c->entries[i].cache_hits++;
     c->entries[i].ref++;
-    *table = c->entries[i].table;
+    *table = qcow2_cache_get_table_addr(bs, c, i);
 
     trace_qcow2_cache_get_done(qemu_coroutine_self(),
                                c == s->l2_table_cache, i);
@@ -344,7 +340,7 @@ int qcow2_cache_put(BlockDriverState *bs, Qcow2Cache *c, void **table)
     int i;
 
     for (i = 0; i < c->size; i++) {
-        if (c->entries[i].table == *table) {
+        if (qcow2_cache_get_table_addr(bs, c, i) == *table) {
             goto found;
         }
     }
@@ -358,12 +354,13 @@ found:
     return 0;
 }
 
-void qcow2_cache_entry_mark_dirty(Qcow2Cache *c, void *table)
+void qcow2_cache_entry_mark_dirty(BlockDriverState *bs, Qcow2Cache *c,
+     void *table)
 {
     int i;
 
     for (i = 0; i < c->size; i++) {
-        if (c->entries[i].table == table) {
+        if (qcow2_cache_get_table_addr(bs, c, i) == table) {
             goto found;
         }
     }
diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c
index ed2b44d..5cd418a 100644
--- a/block/qcow2-cluster.c
+++ b/block/qcow2-cluster.c
@@ -263,7 +263,7 @@ static int l2_allocate(BlockDriverState *bs, int l1_index, uint64_t **table)
     BLKDBG_EVENT(bs->file, BLKDBG_L2_ALLOC_WRITE);
 
     trace_qcow2_l2_allocate_write_l2(bs, l1_index);
-    qcow2_cache_entry_mark_dirty(s->l2_table_cache, l2_table);
+    qcow2_cache_entry_mark_dirty(bs, s->l2_table_cache, l2_table);
     ret = qcow2_cache_flush(bs, s->l2_table_cache);
     if (ret < 0) {
         goto fail;
@@ -692,7 +692,7 @@ uint64_t qcow2_alloc_compressed_cluster_offset(BlockDriverState *bs,
     /* compressed clusters never have the copied flag */
 
     BLKDBG_EVENT(bs->file, BLKDBG_L2_UPDATE_COMPRESSED);
-    qcow2_cache_entry_mark_dirty(s->l2_table_cache, l2_table);
+    qcow2_cache_entry_mark_dirty(bs, s->l2_table_cache, l2_table);
     l2_table[l2_index] = cpu_to_be64(cluster_offset);
     ret = qcow2_cache_put(bs, s->l2_table_cache, (void**) &l2_table);
     if (ret < 0) {
@@ -771,7 +771,7 @@ int qcow2_alloc_cluster_link_l2(BlockDriverState *bs, QCowL2Meta *m)
     if (ret < 0) {
         goto err;
     }
-    qcow2_cache_entry_mark_dirty(s->l2_table_cache, l2_table);
+    qcow2_cache_entry_mark_dirty(bs, s->l2_table_cache, l2_table);
 
     assert(l2_index + m->nb_clusters <= s->l2_size);
     for (i = 0; i < m->nb_clusters; i++) {
@@ -1470,7 +1470,7 @@ static int discard_single_l2(BlockDriverState *bs, uint64_t offset,
         }
 
         /* First remove L2 entries */
-        qcow2_cache_entry_mark_dirty(s->l2_table_cache, l2_table);
+        qcow2_cache_entry_mark_dirty(bs, s->l2_table_cache, l2_table);
         if (!full_discard && s->qcow_version >= 3) {
             l2_table[l2_index + i] = cpu_to_be64(QCOW_OFLAG_ZERO);
         } else {
@@ -1558,7 +1558,7 @@ static int zero_single_l2(BlockDriverState *bs, uint64_t offset,
         old_offset = be64_to_cpu(l2_table[l2_index + i]);
 
         /* Update L2 entries */
-        qcow2_cache_entry_mark_dirty(s->l2_table_cache, l2_table);
+        qcow2_cache_entry_mark_dirty(bs, s->l2_table_cache, l2_table);
         if (old_offset & QCOW_OFLAG_COMPRESSED) {
             l2_table[l2_index + i] = cpu_to_be64(QCOW_OFLAG_ZERO);
             qcow2_free_any_clusters(bs, old_offset, 1, QCOW2_DISCARD_REQUEST);
@@ -1760,7 +1760,7 @@ static int expand_zero_clusters_in_l1(BlockDriverState *bs, uint64_t *l1_table,
 
         if (is_active_l1) {
             if (l2_dirty) {
-                qcow2_cache_entry_mark_dirty(s->l2_table_cache, l2_table);
+                qcow2_cache_entry_mark_dirty(bs, s->l2_table_cache, l2_table);
                 qcow2_cache_depends_on_flush(s->l2_table_cache);
             }
             ret = qcow2_cache_put(bs, s->l2_table_cache, (void **)&l2_table);
diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c
index f47260b..35a6a35 100644
--- a/block/qcow2-refcount.c
+++ b/block/qcow2-refcount.c
@@ -424,7 +424,7 @@ static int alloc_refcount_block(BlockDriverState *bs,
 
     /* Now the new refcount block needs to be written to disk */
     BLKDBG_EVENT(bs->file, BLKDBG_REFBLOCK_ALLOC_WRITE);
-    qcow2_cache_entry_mark_dirty(s->refcount_block_cache, *refcount_block);
+    qcow2_cache_entry_mark_dirty(bs, s->refcount_block_cache, *refcount_block);
     ret = qcow2_cache_flush(bs, s->refcount_block_cache);
     if (ret < 0) {
         goto fail_block;
@@ -737,7 +737,8 @@ static int QEMU_WARN_UNUSED_RESULT update_refcount(BlockDriverState *bs,
         }
         old_table_index = table_index;
 
-        qcow2_cache_entry_mark_dirty(s->refcount_block_cache, refcount_block);
+        qcow2_cache_entry_mark_dirty(bs, s->refcount_block_cache,
+                                     refcount_block);
 
         /* we can update the count and save it */
         block_index = cluster_index & (s->refcount_block_size - 1);
@@ -1177,7 +1178,8 @@ int qcow2_update_snapshot_refcount(BlockDriverState *bs,
                             s->refcount_block_cache);
                     }
                     l2_table[j] = cpu_to_be64(offset);
-                    qcow2_cache_entry_mark_dirty(s->l2_table_cache, l2_table);
+                    qcow2_cache_entry_mark_dirty(bs, s->l2_table_cache,
+                                                 l2_table);
                 }
             }
 
diff --git a/block/qcow2.h b/block/qcow2.h
index 422b825..5d0995f 100644
--- a/block/qcow2.h
+++ b/block/qcow2.h
@@ -574,7 +574,8 @@ int qcow2_read_snapshots(BlockDriverState *bs);
 Qcow2Cache *qcow2_cache_create(BlockDriverState *bs, int num_tables);
 int qcow2_cache_destroy(BlockDriverState* bs, Qcow2Cache *c);
 
-void qcow2_cache_entry_mark_dirty(Qcow2Cache *c, void *table);
+void qcow2_cache_entry_mark_dirty(BlockDriverState *bs, Qcow2Cache *c,
+     void *table);
 int qcow2_cache_flush(BlockDriverState *bs, Qcow2Cache *c);
 int qcow2_cache_set_dependency(BlockDriverState *bs, Qcow2Cache *c,
     Qcow2Cache *dependency);
