[PATCH] null_blk: fix a bug in capacity calculation

[Shaohua Li]

the capacity calculation is obvious buggy.

Signed-off-by: Shaohua Li <shli@xxxxxxxxxxxx>
---
 drivers/block/null_blk.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: master/drivers/block/null_blk.c
===================================================================
--- master.orig/drivers/block/null_blk.c	2013-10-11 12:08:49.625163094 +0800
+++ master/drivers/block/null_blk.c	2013-10-11 12:08:49.625163094 +0800
@@ -555,7 +555,7 @@ err:
 	blk_queue_physical_block_size(nullb->q, bs);
 
 	size = gb * 1024 * 1024 * 1024ULL;
-	size = sector_div(size, bs);
+	sector_div(size, bs);
 	set_capacity(disk, size);
 
 	disk->flags |= GENHD_FL_EXT_DEVT;
--
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