[PATCH v1] bcache: Use vmalloc_array() to improve code

[tanze]

Remove array_size() calls and replace vmalloc(), Due to vmalloc_array() is optimized better,
uses fewer instructions, and handles overflow more concisely[1].

Signed-off-by: tanze <tanze@xxxxxxxxxx>
---
Please ignore the previous email, a simple formatting error 
has been corrected in this one.

Thanks
---
 drivers/md/bcache/sysfs.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c
index 826b14cae4e5..7bb5605ad7fb 100644
--- a/drivers/md/bcache/sysfs.c
+++ b/drivers/md/bcache/sysfs.c
@@ -1061,8 +1061,7 @@ SHOW(__bch_cache)
 		uint16_t q[31], *p, *cached;
 		ssize_t ret;
 
-		cached = p = vmalloc(array_size(sizeof(uint16_t),
-						ca->sb.nbuckets));
+		cached = p = vmalloc_array(ca->sb.nbuckets, sizeof(uint16_t));
 		if (!p)
 			return -ENOMEM;
 
-- 
2.25.1