dm: publish array_too_big

Move array_too_big to include/linux/device-mapper.h because it is
used by targets.

Remove the test from dm-raid1 as the number of mirror legs is limited
such that it can never fail.  (Even for stripes it seems rather
unlikely.)

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c
index b745d8ac625b..287e24584730 100644
--- a/drivers/md/dm-stripe.c
+++ b/drivers/md/dm-stripe.c
@@ -60,8 +60,8 @@ static inline struct stripe_c *alloc_context(unsigned int stripes)
 {
         size_t len;
 
-        if (array_too_big(sizeof(struct stripe_c), sizeof(struct stripe),
-                          stripes))
+        if (dm_array_too_big(sizeof(struct stripe_c), sizeof(struct stripe),
+                             stripes))
                 return NULL;
 
         len = sizeof(struct stripe_c) + (sizeof(struct stripe) * stripes);