0day reports a build failure on the hexagon architecture:
ld.lld: error: undefined symbol: __hexagon_udivdi3
referenced by raid5.c
md/raid5.o:(raid5_make_request) in archive drivers/built-in.a
referenced by raid5.c
md/raid5.o:(raid5_make_request) in archive drivers/built-in.a
did you mean: __hexagon_udivsi3
defined in: arch/hexagon/built-in.a(lib/udivsi3.o)
This is caused by using DIV_ROUND_UP on a sector_t type.
The actual value is known to be less than 256 so a wide 64bit divide
here is not desirable. Thus cast the argument to an int to ensure it
uses a 32bit divide.
Fixes: 681fb14a7100 ("md/raid5: Pivot raid5_make_request()")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Logan Gunthorpe <logang@xxxxxxxxxxxx>
---
drivers/md/raid5.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 5723a497108a..9d25696b793d 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -6091,7 +6091,7 @@ static bool raid5_make_request(struct mddev *mddev, struct bio * bi)
bi->bi_next = NULL;
bitmap_set(ctx.sectors_to_do, 0,
- DIV_ROUND_UP(ctx.last_sector - logical_sector,
+ DIV_ROUND_UP((int)(ctx.last_sector - logical_sector),
RAID5_STRIPE_SECTORS(conf)));
pr_debug("raid456: %s, logical %llu to %llu\n", __func__,
base-commit: 57c19f921f8081c1a9444dc7f3f6b3ea43fe612e
--
2.30.2
