From 83c3e5e17b5e3057ac304383a46e3c485d00ffed Mon Sep 17 00:00:00 2001 From: Yufen Yu Date: Wed, 22 Jul 2020 23:29:05 -0400 Subject: md/raid5: use do_div() for 64 bit divisions in raid5_sync_request We get compilation error on 32-bit architectures (e.g. m68k), as: ERROR: modpost: "__udivdi3" [drivers/md/raid456.ko] undefined! Since 'sync_blocks' is defined as u64, use do_div() to fix this error. Fixes: c911c46c017c ("md/raid456: convert macro STRIPE_* to RAID5_STRIPE_*") Signed-off-by: Yufen Yu Signed-off-by: Song Liu --- drivers/md/raid5.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/md/raid5.c') diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 40961dd1777b..a6ff6e1e039b 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -6104,7 +6104,7 @@ static inline sector_t raid5_sync_request(struct mddev *mddev, sector_t sector_n !md_bitmap_start_sync(mddev->bitmap, sector_nr, &sync_blocks, 1) && sync_blocks >= RAID5_STRIPE_SECTORS(conf)) { /* we can skip this block, and probably more */ - sync_blocks /= RAID5_STRIPE_SECTORS(conf); + do_div(sync_blocks, RAID5_STRIPE_SECTORS(conf)); *skipped = 1; /* keep things rounded to whole stripes */ return sync_blocks * RAID5_STRIPE_SECTORS(conf); -- cgit v1.2.3