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| author | Benjamin Marzinski <bmarzins@redhat.com> | 2016-12-02 22:14:17 +0100 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2016-12-08 20:13:15 +0100 |
| commit | 0c79ce0b75304fbbe42282a7d40af4367e31efc6 (patch) | |
| tree | 9d8bc987b6edc5dd2e766d106451ddd842c3454c | |
| parent | dm space map metadata: fix 'struct sm_metadata' leak on failed create (diff) | |
| download | linux-0c79ce0b75304fbbe42282a7d40af4367e31efc6.tar.xz linux-0c79ce0b75304fbbe42282a7d40af4367e31efc6.zip | |
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>
| -rw-r--r-- | drivers/md/persistent-data/dm-space-map-common.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/md/persistent-data/dm-space-map-common.c b/drivers/md/persistent-data/dm-space-map-common.c index 306d2e4502c4..10978ba1d2c1 100644 --- 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); |