BUG_ON(get_order(__vstruct_bytes(struct bch_sb, sb_u64s)) >
sb->page_order);
- if (!f) {
+ if (!f && !u64s) {
+ /* nothing to do: */
+ } else if (!f) {
f = vstruct_last(sb->sb);
memset(f, 0, sizeof(u64) * u64s);
f->u64s = cpu_to_le32(u64s);
mutex_lock(&c->sb_lock);
SET_BCH_SB_CLEAN(c->disk_sb.sb, false);
c->disk_sb.sb->compat[0] &= ~(1ULL << BCH_COMPAT_FEAT_ALLOC_METADATA);
+ c->disk_sb.sb->features[0] |= 1ULL << BCH_FEATURE_new_extent_overwrite;
+ c->disk_sb.sb->features[0] |= 1ULL << BCH_FEATURE_extents_above_btree_updates;
+ c->disk_sb.sb->features[0] |= 1ULL << BCH_FEATURE_btree_updates_journalled;
ret = bch2_write_super(c);
mutex_unlock(&c->sb_lock);
c->disk_sb.sb->compat[0] |= 1ULL << BCH_COMPAT_FEAT_ALLOC_INFO;
c->disk_sb.sb->compat[0] |= 1ULL << BCH_COMPAT_FEAT_ALLOC_METADATA;
+ c->disk_sb.sb->features[0] &= ~(1ULL << BCH_FEATURE_extents_above_btree_updates);
+ c->disk_sb.sb->features[0] &= ~(1ULL << BCH_FEATURE_btree_updates_journalled);
u64s = sizeof(*sb_clean) / sizeof(u64) + c->journal.entry_u64s_reserved;