RDMA/cma: Constify struct configfs_item_operations and configfs_group_operations

'struct configfs_item_operations' and 'configfs_group_operations' are not
modified in this driver.

Constifying these structures moves some data to a read-only section, so
increases overall security, especially when the structure holds some
function pointers.

On a x86_64, with allmodconfig:
Before:
======
   text	   data	    bss	    dec	    hex	filename
   6677	   2776	     64	   9517	   252d	drivers/infiniband/core/cma_configfs.o

After:
=====
   text	   data	    bss	    dec	    hex	filename
   6901	   2552	     64	   9517	   252d	drivers/infiniband/core/cma_configfs.o

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://patch.msgid.link/6acd9c8a79b868b5e541a7e080a6b4b145e4fd4f.1778923041.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Leon Romanovsky <leon@kernel.org>

diff --git a/drivers/infiniband/core/cma_configfs.c b/drivers/infiniband/core/cma_configfs.c
index 819927ce4f0ec8a489d1876d7d38470cc7b2303a..891e52afb8f4bab4ad466be3223f109e9f4602e3 100644 (file)
--- a/drivers/infiniband/core/cma_configfs.c
+++ b/drivers/infiniband/core/cma_configfs.c
@@ -255,7 +255,7 @@ static void release_cma_ports_group(struct config_item  *item)
        cma_dev_group->ports = NULL;
 };
 
-static struct configfs_item_operations cma_ports_item_ops = {
+static const struct configfs_item_operations cma_ports_item_ops = {
        .release = release_cma_ports_group
 };
 
@@ -264,7 +264,7 @@ static const struct config_item_type cma_ports_group_type = {
        .ct_owner       = THIS_MODULE
 };
 
-static struct configfs_item_operations cma_device_item_ops = {
+static const struct configfs_item_operations cma_device_item_ops = {
        .release = release_cma_dev
 };
 
@@ -327,7 +327,7 @@ static void drop_cma_dev(struct config_group *cgroup, struct config_item *item)
        config_item_put(item);
 }
 
-static struct configfs_group_operations cma_subsys_group_ops = {
+static const struct configfs_group_operations cma_subsys_group_ops = {
        .make_group     = make_cma_dev,
        .drop_item      = drop_cma_dev,
 };