From 28e689148eee05f509094577bf056e1d258f9c6b Mon Sep 17 00:00:00 2001
From: Mike Snitzer <snitzer@redhat.com>
Date: Thu, 13 Sep 2018 21:16:20 -0400
Subject: [PATCH] dm thin metadata: fix __udivdi3 undefined on 32-bit

commit 013ad043906b2befd4a9bfb06219ed9fedd92716 upstream.

sector_div() is only viable for use with sector_t.
dm_block_t is typedef'd to uint64_t -- so use div_u64() instead.

Fixes: 3ab918281 ("dm thin metadata: try to avoid ever aborting transactions")
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/md/dm-thin-metadata.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c
index 7e0ccb6fee9de..149fbac97cb69 100644
--- a/drivers/md/dm-thin-metadata.c
+++ b/drivers/md/dm-thin-metadata.c
@@ -843,10 +843,8 @@ static void __set_metadata_reserve(struct dm_pool_metadata *pmd)
 	if (r) {
 		DMERR("could not get size of metadata device");
 		pmd->metadata_reserve = max_blocks;
-	} else {
-		sector_div(total, 10);
-		pmd->metadata_reserve = min(max_blocks, total);
-	}
+	} else
+		pmd->metadata_reserve = min(max_blocks, div_u64(total, 10));
 }
 
 struct dm_pool_metadata *dm_pool_metadata_open(struct block_device *bdev,