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qcow2: initialize metadata before inserting in cluster_allocs 

QCow2Meta structure was inserted into list before many fields are
initialized. Currently is not a problem cause all occur in a lock
but if qcow2_alloc_clusters would in a future unlock this lock
some issues could arise.
Initializing fields before inserting fix the problem.

Signed-off-by: Frediano Ziglio <freddy77@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Frediano Ziglio 2011-09-08 13:38:42 +02:00 committed by Kevin Wolf
parent 25ad22bc4e
commit 05140499d3
1 changed files with 5 additions and 5 deletions
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10
block/qcow2-cluster.c
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@ -806,6 +806,11 @@ again:
abort(); abort();
} }
/* save info needed for meta data update */
m->offset = offset;
m->n_start = n_start;
m->nb_clusters = nb_clusters;
QLIST_INSERT_HEAD(&s->cluster_allocs, m, next_in_flight); QLIST_INSERT_HEAD(&s->cluster_allocs, m, next_in_flight);
/* allocate a new cluster */ /* allocate a new cluster */
@ -816,11 +821,6 @@ again:
goto fail; goto fail;
} }
/* save info needed for meta data update */
m->offset = offset;
m->n_start = n_start;
m->nb_clusters = nb_clusters;
out: out:
ret = qcow2_cache_put(bs, s->l2_table_cache, (void**) &l2_table); ret = qcow2_cache_put(bs, s->l2_table_cache, (void**) &l2_table);
if (ret < 0) { if (ret < 0) {