[PATCH 2/4] block: mq-deadline: Constify sysfs attributes

From: Thomas Weißschuh
Date: Thu Jan 02 2025 - 07:02:16 EST


The elevator core now allows instances of 'struct elv_fs_entry' to be
moved into read-only memory. Make use of that to protect them against
accidental or malicious modifications.

Signed-off-by: Thomas Weißschuh <linux@xxxxxxxxxxxxxx>
---
block/mq-deadline.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/mq-deadline.c b/block/mq-deadline.c
index 5528347b5fcfca3d5bda443f9a116e29b95dd0c1..754f6b7415cdce0a3af60545731a1f2ec525d2e6 100644
--- a/block/mq-deadline.c
+++ b/block/mq-deadline.c
@@ -834,7 +834,7 @@ STORE_INT(deadline_fifo_batch_store, &dd->fifo_batch, 0, INT_MAX);
#define DD_ATTR(name) \
__ATTR(name, 0644, deadline_##name##_show, deadline_##name##_store)

-static struct elv_fs_entry deadline_attrs[] = {
+static const struct elv_fs_entry deadline_attrs[] = {
DD_ATTR(read_expire),
DD_ATTR(write_expire),
DD_ATTR(writes_starved),

--
2.47.1