dm thin metadata: call precommit before saving the roots

These calls were the wrong way round in __write_initial_superblock.

Cc: stable@vger.kernel.org
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c
index 0f0251d0d337..d31d18d9727c 100644
--- a/drivers/md/dm-thin-metadata.c
+++ b/drivers/md/dm-thin-metadata.c
@@ -484,11 +484,11 @@ static int __write_initial_superblock(struct dm_pool_metadata *pmd)
         if (r < 0)
                 return r;
 
-        r = save_sm_roots(pmd);
+        r = dm_tm_pre_commit(pmd->tm);
         if (r < 0)
                 return r;
 
-        r = dm_tm_pre_commit(pmd->tm);
+        r = save_sm_roots(pmd);
         if (r < 0)
                 return r;