mm/swap_state: constify static struct attribute_group

The only usage of swap_attr_group is to pass its address to
sysfs_create_group() which takes a pointer to const attribute_group.  Make
it const to allow the compiler to put it in read-only memory.

Link: https://lkml.kernel.org/r/20210201233254.91809-1-rikard.falkeborn@gmail.com
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Reviewed-by: Amy Parker <enbyamy@gmail.com>
Acked-by: "Huang, Ying" <ying.huang@intel.com>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/swap_state.c b/mm/swap_state.c
index 751c1ef..3507c82 100644 (file)
--- a/mm/swap_state.c
+++ b/mm/swap_state.c
@@ -927,7 +927,7 @@ static struct attribute *swap_attrs[] = {
        NULL,
 };
 
-static struct attribute_group swap_attr_group = {
+static const struct attribute_group swap_attr_group = {
        .attrs = swap_attrs,
 };