block: Fix elevator name declaration

The elevator_name field in struct elevator_type is declared as an array
of characters (ELV_NAME_MAX size) but in practice used as a string
pointer with its initialization done statically within each
elevator elevator_type structure declaration.

Change the declaration of elevator_name to the more appropriate
"const char *" type.

Acked-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/include/linux/elevator.h b/include/linux/elevator.h
index 38590c30a11d25b4dc7b719c1395141844b6f3a4..17cd0078377cae91dc86d63541b1bd6b87141b0a 100644 (file)
--- a/include/linux/elevator.h
+++ b/include/linux/elevator.h
@@ -75,7 +75,7 @@ struct elevator_type
        size_t icq_size;        /* see iocontext.h */
        size_t icq_align;       /* ditto */
        struct elv_fs_entry *elevator_attrs;
-       char elevator_name[ELV_NAME_MAX];
+       const char *elevator_name;
        const char *elevator_alias;
        struct module *elevator_owner;
 #ifdef CONFIG_BLK_DEBUG_FS