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Subject[PATCH 2/3] writeback: fix incorrect return value type of bdi_dirty_limit
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unsigned long bdi_dirty_limit(struct backing_dev_info *bdi, unsigned long dirty)

Above function return type is unsigned long, but return value is
kept in "u64 bdi_dirty".
It can return incorrect value by type casting.

Signed-off-by: Namjae Jeon <linkinjeon@gmail.com>
---
mm/page-writeback.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 49133b6..73a7a06 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -546,7 +546,7 @@ static unsigned long hard_dirty_limit(unsigned long thresh)
*/
unsigned long bdi_dirty_limit(struct backing_dev_info *bdi, unsigned long dirty)
{
- u64 bdi_dirty;
+ unsigned long bdi_dirty;
long numerator, denominator;

/*
--
1.7.9.5


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