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From 0a8f6084033d307f4e60104be1da0da99e8775b6 Mon Sep 17 00:00:00 2001
From: Max Reitz <mreitz@redhat.com>
Date: Sat, 13 Jun 2015 16:22:14 +0200
Subject: [PATCH 20/42] qcow2: Pull check_refblocks() up
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Message-id: <1434212556-3927-21-git-send-email-mreitz@redhat.com>
Patchwork-id: 66039
O-Subject: [RHEL-7.2 qemu-kvm PATCH 20/42] qcow2: Pull check_refblocks() up
Bugzilla: 1129893
RH-Acked-by: Jeffrey Cody <jcody@redhat.com>
RH-Acked-by: Fam Zheng <famz@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>

BZ: 1129893

Pull check_refblocks() before calculate_refcounts() so we can drop its
static declaration.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: BenoƮt Canet <benoit.canet@nodalink.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit 057a3fe57e740e5e1cc3d62c9b8e0085e9fffa74)

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 block/qcow2-refcount.c | 102 ++++++++++++++++++++++++-------------------------
 1 file changed, 49 insertions(+), 53 deletions(-)

diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c
index cb78f05..0d10865 100644
--- a/block/qcow2-refcount.c
+++ b/block/qcow2-refcount.c
@@ -1501,59 +1501,6 @@ fail:
     return new_offset;
 }
 
-static int check_refblocks(BlockDriverState *bs, BdrvCheckResult *res,
-                           BdrvCheckMode fix, uint16_t **refcount_table,
-                           int64_t *nb_clusters);
-
-/*
- * Calculates an in-memory refcount table.
- */
-static int calculate_refcounts(BlockDriverState *bs, BdrvCheckResult *res,
-                               BdrvCheckMode fix, uint16_t **refcount_table,
-                               int64_t *nb_clusters)
-{
-    BDRVQcowState *s = bs->opaque;
-    int64_t i;
-    QCowSnapshot *sn;
-    int ret;
-
-    *refcount_table = g_try_new0(uint16_t, *nb_clusters);
-    if (*nb_clusters && *refcount_table == NULL) {
-        res->check_errors++;
-        return -ENOMEM;
-    }
-
-    /* header */
-    inc_refcounts(bs, res, *refcount_table, *nb_clusters,
-        0, s->cluster_size);
-
-    /* current L1 table */
-    ret = check_refcounts_l1(bs, res, *refcount_table, *nb_clusters,
-                             s->l1_table_offset, s->l1_size, CHECK_FRAG_INFO);
-    if (ret < 0) {
-        return ret;
-    }
-
-    /* snapshots */
-    for (i = 0; i < s->nb_snapshots; i++) {
-        sn = s->snapshots + i;
-        ret = check_refcounts_l1(bs, res, *refcount_table, *nb_clusters,
-            sn->l1_table_offset, sn->l1_size, 0);
-        if (ret < 0) {
-            return ret;
-        }
-    }
-    inc_refcounts(bs, res, *refcount_table, *nb_clusters,
-        s->snapshots_offset, s->snapshots_size);
-
-    /* refcount data */
-    inc_refcounts(bs, res, *refcount_table, *nb_clusters,
-        s->refcount_table_offset,
-        s->refcount_table_size * sizeof(uint64_t));
-
-    return check_refblocks(bs, res, fix, refcount_table, nb_clusters);
-}
-
 /*
  * Checks consistency of refblocks and accounts for each refblock in
  * *refcount_table.
@@ -1631,6 +1578,55 @@ static int check_refblocks(BlockDriverState *bs, BdrvCheckResult *res,
 }
 
 /*
+ * Calculates an in-memory refcount table.
+ */
+static int calculate_refcounts(BlockDriverState *bs, BdrvCheckResult *res,
+                               BdrvCheckMode fix, uint16_t **refcount_table,
+                               int64_t *nb_clusters)
+{
+    BDRVQcowState *s = bs->opaque;
+    int64_t i;
+    QCowSnapshot *sn;
+    int ret;
+
+    *refcount_table = g_try_new0(uint16_t, *nb_clusters);
+    if (*nb_clusters && *refcount_table == NULL) {
+        res->check_errors++;
+        return -ENOMEM;
+    }
+
+    /* header */
+    inc_refcounts(bs, res, *refcount_table, *nb_clusters,
+        0, s->cluster_size);
+
+    /* current L1 table */
+    ret = check_refcounts_l1(bs, res, *refcount_table, *nb_clusters,
+                             s->l1_table_offset, s->l1_size, CHECK_FRAG_INFO);
+    if (ret < 0) {
+        return ret;
+    }
+
+    /* snapshots */
+    for (i = 0; i < s->nb_snapshots; i++) {
+        sn = s->snapshots + i;
+        ret = check_refcounts_l1(bs, res, *refcount_table, *nb_clusters,
+            sn->l1_table_offset, sn->l1_size, 0);
+        if (ret < 0) {
+            return ret;
+        }
+    }
+    inc_refcounts(bs, res, *refcount_table, *nb_clusters,
+        s->snapshots_offset, s->snapshots_size);
+
+    /* refcount data */
+    inc_refcounts(bs, res, *refcount_table, *nb_clusters,
+        s->refcount_table_offset,
+        s->refcount_table_size * sizeof(uint64_t));
+
+    return check_refblocks(bs, res, fix, refcount_table, nb_clusters);
+}
+
+/*
  * Compares the actual reference count for each cluster in the image against the
  * refcount as reported by the refcount structures on-disk.
  */
-- 
1.8.3.1