__get_vm_area_node() takes unsigned long size, which is a 64-bit
value on a 64-bit kernel. However, fls(size) simply ignores the
upper 32-bit. Change to use fls_long() to handle the size properly.
Signed-off-by: Toshi Kani <toshi.k...@hp.com>
---
mm/vmalloc.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 35b25e1..fe1672d 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -29,6 +29,7 @@
#include <linux/atomic.h>
#include <linux/compiler.h>
#include <linux/llist.h>
+#include <linux/bitops.h>
#include <asm/uaccess.h>
#include <asm/tlbflush.h>
@@ -1314,7 +1315,8 @@ static struct vm_struct *__get_vm_area_node(unsigned long
size,
BUG_ON(in_interrupt());
if (flags & VM_IOREMAP)
- align = 1ul << clamp(fls(size), PAGE_SHIFT, IOREMAP_MAX_ORDER);
+ align = 1ul << clamp_t(int, fls_long(size),
+ PAGE_SHIFT, IOREMAP_MAX_ORDER);
size = PAGE_ALIGN(size);
if (unlikely(!size))
--
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