releases/4.9.132/dm-thin-metadata-fix-__udivdi3-undefined-on-32-bit.patch

   1 From 013ad043906b2befd4a9bfb06219ed9fedd92716 Mon Sep 17 00:00:00 2001
   2 From: Mike Snitzer <snitzer@redhat.com>
   3 Date: Thu, 13 Sep 2018 21:16:20 -0400
   4 Subject: dm thin metadata: fix __udivdi3 undefined on 32-bit
   5
   6 From: Mike Snitzer <snitzer@redhat.com>
   7
   8 commit 013ad043906b2befd4a9bfb06219ed9fedd92716 upstream.
   9
  10 sector_div() is only viable for use with sector_t.
  11 dm_block_t is typedef'd to uint64_t -- so use div_u64() instead.
  12
  13 Fixes: 3ab918281 ("dm thin metadata: try to avoid ever aborting transactions")
  14 Signed-off-by: Mike Snitzer <snitzer@redhat.com>
  15 Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
  16 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  17
  18 ---
  19  drivers/md/dm-thin-metadata.c |    6 ++----
  20  1 file changed, 2 insertions(+), 4 deletions(-)
  21
  22 --- a/drivers/md/dm-thin-metadata.c
  23 +++ b/drivers/md/dm-thin-metadata.c
  24 @@ -843,10 +843,8 @@ static void __set_metadata_reserve(struc
  25         if (r) {
  26                 DMERR("could not get size of metadata device");
  27                 pmd->metadata_reserve = max_blocks;
  28 -       } else {
  29 -               sector_div(total, 10);
  30 -               pmd->metadata_reserve = min(max_blocks, total);
  31 -       }
  32 +       } else
  33 +               pmd->metadata_reserve = min(max_blocks, div_u64(total, 10));
  34  }
  35
  36  struct dm_pool_metadata *dm_pool_metadata_open(struct block_device *bdev,