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block: Adjust elv_iosched_show to return "none" for bio-based DM
[safe/jmp/linux-2.6]
/
block
/
elevator.c
diff --git
a/block/elevator.c
b/block/elevator.c
index
6df2b50
..
0abce47
100644
(file)
--- a/
block/elevator.c
+++ b/
block/elevator.c
@@
-1097,7
+1097,7
@@
ssize_t elv_iosched_show(struct request_queue *q, char *name)
struct elevator_type *__e;
int len = 0;
- if (!q->elevator)
+ if (!q->elevator
|| !blk_queue_stackable(q)
)
return sprintf(name, "none\n");
elv = e->elevator_type;