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-rw-r--r--include/linux/device-mapper.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index 08d783592b73..dfb30db475ed 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -354,6 +354,9 @@ void *dm_vcalloc(unsigned long nmemb, unsigned long elem_size);
*/
#define dm_round_up(n, sz) (dm_div_up((n), (sz)) * (sz))
+#define dm_array_too_big(fixed, obj, num) \
+ ((num) > (UINT_MAX - (fixed)) / (obj))
+
static inline sector_t to_sector(unsigned long n)
{
return (n >> SECTOR_SHIFT);