1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 9cc7cc5fdce1..6dcd30d806cd 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -918,6 +918,8 @@ extern void blk_set_cmd_filter_defaults(struct blk_cmd_filter *filter);
 
 #define MAX_SEGMENT_SIZE        65536
 
+#define BLK_SEG_BOUNDARY_MASK   0xFFFFFFFFUL
+
 #define blkdev_entry_to_request(entry) list_entry((entry), struct request, queuelist)
 
 static inline int queue_hardsect_size(struct request_queue *q)