acl: Realign struct posix_acl to save 8 bytes

Reduce posix_acl's struct size by 8 bytes by realigning its members.

Cc: Christian Brauner <[email protected]>
Reviewed-by: Jan Kara <[email protected]>
Signed-off-by: Thorsten Blum <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Christian Brauner <[email protected]>

Author: toblux

include/linux/posix_acl.h

@@ -28,8 +28,8 @@ struct posix_acl_entry {
 
 struct posix_acl {
 	refcount_t		a_refcount;
-	struct rcu_head		a_rcu;
 	unsigned int		a_count;
+	struct rcu_head		a_rcu;
 	struct posix_acl_entry	a_entries[];
 };