set_capacity() sets device capacity by the number of 512 bytes
sectors. null_blk calculates the number of sectors by size / bs
and calls set_capacity. This leads to the wrong number
of sectors when bs is not 512 bytes.
Signed-off-by: Matias Bjørling <m...@bjorling.me>
---
drivers/block/null_blk.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/block/null_blk.c b/drivers/block/null_blk.c
index 65cd61a..79972ab 100644
--- a/drivers/block/null_blk.c
+++ b/drivers/block/null_blk.c
@@ -576,8 +576,7 @@ static int null_add_dev(void)
blk_queue_physical_block_size(nullb->q, bs);
size = gb * 1024 * 1024 * 1024ULL;
- sector_div(size, bs);
- set_capacity(disk, size);
+ set_capacity(disk, size >> 9);
disk->flags |= GENHD_FL_EXT_DEVT | GENHD_FL_SUPPRESS_PARTITION_INFO;
disk->major = null_major;
--
2.1.4
--
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