[PATCH] mm/percpu.c: Modify calculation of size of populated bitmap of chunk for memory allocation

[mcsmonk <mcsmonk@gmail.com>]

From: Sunghyun Jin <mcsmonk@gmail.com>

Variable populated, which is a member of struct pcpu_chunk, is used as a
unit of size of unsigned long.
However, size of populated is miscounted. So, I fix this minor part.

Signed-off-by: Sunghyun Jin <mcsmonk@gmail.com>
---
 mm/percpu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/percpu.c b/mm/percpu.c
index f4709629e6de..1ed1a349eab8 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1316,7 +1316,7 @@ static struct pcpu_chunk * __init pcpu_alloc_first_chunk(unsigned long tmp_addr,
 
 	/* allocate chunk */
 	alloc_size = sizeof(struct pcpu_chunk) +
-		BITS_TO_LONGS(region_size >> PAGE_SHIFT);
+		BITS_TO_LONGS(region_size >> PAGE_SHIFT) * sizeof(unsigned long);
 	chunk = memblock_alloc(alloc_size, SMP_CACHE_BYTES);
 	if (!chunk)
 		panic("%s: Failed to allocate %zu bytes\n", __func__,
-- 
2.17.1