dm thin metadata: remove needless work from __commit_transaction

Commit 5a32083d03fb5 ("dm: take care to copy the space map roots before
locking the superblock") properly removed the calls to dm_sm_root_size()
from __write_initial_superblock().  But the dm_sm_root_size() calls were
left dangling in __commit_transaction().

Fixes: 5a32083d03fb5 ("dm: take care to copy the space map roots before locking the superblock")
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c
index 36ef284..7214202 100644 (file)
--- a/drivers/md/dm-thin-metadata.c
+++ b/drivers/md/dm-thin-metadata.c
@@ -776,7 +776,6 @@ static int __write_changed_details(struct dm_pool_metadata *pmd)
 static int __commit_transaction(struct dm_pool_metadata *pmd)
 {
        int r;
-       size_t metadata_len, data_len;
        struct thin_disk_superblock *disk_super;
        struct dm_block *sblock;
 
@@ -797,14 +796,6 @@ static int __commit_transaction(struct dm_pool_metadata *pmd)
        if (r < 0)
                return r;
 
-       r = dm_sm_root_size(pmd->metadata_sm, &metadata_len);
-       if (r < 0)
-               return r;
-
-       r = dm_sm_root_size(pmd->data_sm, &data_len);
-       if (r < 0)
-               return r;
-
        r = save_sm_roots(pmd);
        if (r < 0)
                return r;