[PATCH] portability problem in dm-stripe.c

dm-stripe does do_div() on potentially 32bit data.  do_div()
implementation has every right to be Not Happy(tm) with that...

The fix is obvious - that's what sector_div() is for...
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/md/dm-stripe.c

@@ -174,7 +174,7 @@ static int stripe_map(struct dm_target *ti, struct bio *bio,
 
 	sector_t offset = bio->bi_sector - ti->begin;
 	sector_t chunk = offset >> sc->chunk_shift;
-	uint32_t stripe = do_div(chunk, sc->stripes);
+	uint32_t stripe = sector_div(chunk, sc->stripes);
 
 	bio->bi_bdev = sc->stripe[stripe].dev->bdev;
 	bio->bi_sector = sc->stripe[stripe].physical_start +