dm space map metadata: skip useless memcpy in metadata_ll_init_index()

When metadata_ll_init_index() is called by sm_ll_new_metadata(),
ll->mi_le hasn't been initialized yet. So, when
metadata_ll_init_index() copies the contents of ll->mi_le into the
newly allocated bitmap_root, it is just copying garbage. ll->mi_le
will be allocated later in sm_ll_extend() and copied into the
bitmap_root, in sm_ll_commit().

Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

diff --git a/drivers/md/persistent-data/dm-space-map-common.c b/drivers/md/persistent-data/dm-space-map-common.c
index 306d2e4502c480aef245224a5235c37dc8b94d0a..10978ba1d2c1be2705fbdcd3fd943900b6f53e22 100644 (file)
--- a/drivers/md/persistent-data/dm-space-map-common.c
+++ b/drivers/md/persistent-data/dm-space-map-common.c
@@ -547,7 +547,6 @@ static int metadata_ll_init_index(struct ll_disk *ll)
        if (r < 0)
                return r;
 
-       memcpy(dm_block_data(b), &ll->mi_le, sizeof(ll->mi_le));
        ll->bitmap_root = dm_block_location(b);
 
        dm_tm_unlock(ll->tm, b);