libceph: handle non-empty dest in ceph_{oloc,oid}_copy()

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
index 55e3a47..bf2fcc8 100644 (file)
--- a/net/ceph/osdmap.c
+++ b/net/ceph/osdmap.c
@@ -1547,12 +1547,13 @@ bad:
 void ceph_oloc_copy(struct ceph_object_locator *dest,
                    const struct ceph_object_locator *src)
 {
-       WARN_ON(!ceph_oloc_empty(dest));
-       WARN_ON(dest->pool_ns); /* empty() only covers ->pool */
+       ceph_oloc_destroy(dest);
 
        dest->pool = src->pool;
        if (src->pool_ns)
                dest->pool_ns = ceph_get_string(src->pool_ns);
+       else
+               dest->pool_ns = NULL;
 }
 EXPORT_SYMBOL(ceph_oloc_copy);
 
@@ -1565,14 +1566,15 @@ EXPORT_SYMBOL(ceph_oloc_destroy);
 void ceph_oid_copy(struct ceph_object_id *dest,
                   const struct ceph_object_id *src)
 {
-       WARN_ON(!ceph_oid_empty(dest));
+       ceph_oid_destroy(dest);
 
        if (src->name != src->inline_name) {
                /* very rare, see ceph_object_id definition */
                dest->name = kmalloc(src->name_len + 1,
                                     GFP_NOIO | __GFP_NOFAIL);
+       } else {
+               dest->name = dest->inline_name;
        }
-
        memcpy(dest->name, src->name, src->name_len + 1);
        dest->name_len = src->name_len;
 }