[PATCH 1/2] hfsplus: fix overflow in sector calculations in hfsplus_submit_bio

[Christoph Hellwig]

The variable io_size was unsigned int, which caused the wrong sector number
to be calculated after aligning it. This then caused mount to fail with big
volumes, as backup volume header information was searched from a
wrong sector.

Signed-off-by: Janne Kalliom??ki <janne@xxxxxxxxxx>
Signed-off-by: Christoph Hellwig <hch@xxxxxx>

---
 fs/hfsplus/wrapper.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/hfsplus/wrapper.c b/fs/hfsplus/wrapper.c
index 5d2aa0c..1cc3920 100644
--- a/fs/hfsplus/wrapper.c
+++ b/fs/hfsplus/wrapper.c
@@ -70,7 +70,7 @@ int hfsplus_submit_bio(struct super_block *sb, sector_t sector,
 	DECLARE_COMPLETION_ONSTACK(wait);
 	struct bio *bio;
 	int ret = 0;
-	unsigned int io_size;
+	u64 io_size;
 	loff_t start;
 	int offset;
 

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