dm ioctl: constify ioctl lookup table

Constify the lookup table for device-mapper ioctls so that it is placed
in .rodata.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c
index e06f0ef..8756a68 100644 (file)
--- a/drivers/md/dm-ioctl.c
+++ b/drivers/md/dm-ioctl.c
@@ -1629,7 +1629,7 @@ static int target_message(struct file *filp, struct dm_ioctl *param, size_t para
  *---------------------------------------------------------------*/
 static ioctl_fn lookup_ioctl(unsigned int cmd, int *ioctl_flags)
 {
-       static struct {
+       static const struct {
                int cmd;
                int flags;
                ioctl_fn fn;