target: Use array_zalloc for tpg_lun_list

Turns an order-10 allocation into slab-sized ones, thereby preventing
allocation failures with memory fragmentation.

This likely saves memory as well, as the slab allocator can pack objects
more tightly than the buddy allocator.

Signed-off-by: Joern Engel <joern@logfs.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

2 files changed, 3 insertions, 1 deletions

diff --git a/include/target/target_core_backend.h b/include/target/target_core_backend.h
index e5e6ff98f0fa..8c9ff1b14396 100644
--- a/include/target/target_core_backend.h
+++ b/include/target/target_core_backend.h
@@ -62,4 +62,6 @@ int	transport_set_vpd_ident(struct t10_vpd *, unsigned char *);
 void    *transport_kmap_data_sg(struct se_cmd *);
 void    transport_kunmap_data_sg(struct se_cmd *);
 
+void    array_free(void *array, int n);
+
 #endif /* TARGET_CORE_BACKEND_H */
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index c3334094c668..fc918a7b7d70 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -934,7 +934,7 @@ struct se_portal_group {
         struct list_head        se_tpg_node;
         /* linked list for initiator ACL list */
         struct list_head        acl_node_list;
-        struct se_lun           *tpg_lun_list;
+        struct se_lun           **tpg_lun_list;
         struct se_lun           tpg_virt_lun0;
         /* List of TCM sessions associated wth this TPG */
         struct list_head        tpg_sess_list;