diff options
Diffstat (limited to 'utils.c')
| -rw-r--r-- | utils.c | 26 |
1 files changed, 19 insertions, 7 deletions
@@ -73,7 +73,7 @@ static u64 reference_root_table[] = { int make_btrfs(int fd, const char *device, const char *label, u64 blocks[7], u64 num_bytes, u32 nodesize, - u32 leafsize, u32 sectorsize, u32 stripesize) + u32 leafsize, u32 sectorsize, u32 stripesize, u64 features) { struct btrfs_super_block super; struct extent_buffer *buf; @@ -94,6 +94,8 @@ int make_btrfs(int fd, const char *device, const char *label, u64 ref_root; u32 array_size; u32 item_size; + int skinny_metadata = !!(features & + BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA); first_free = BTRFS_SUPER_INFO_OFFSET + sectorsize * 2 - 1; first_free &= ~((u64)sectorsize - 1); @@ -120,6 +122,7 @@ int make_btrfs(int fd, const char *device, const char *label, btrfs_set_super_csum_type(&super, BTRFS_CSUM_TYPE_CRC32); btrfs_set_super_chunk_root_generation(&super, 1); btrfs_set_super_cache_generation(&super, -1); + btrfs_set_super_incompat_flags(&super, features); if (label) strncpy(super.label, label, BTRFS_LABEL_SIZE - 1); @@ -218,21 +221,30 @@ int make_btrfs(int fd, const char *device, const char *label, nritems = 0; itemoff = __BTRFS_LEAF_DATA_SIZE(leafsize); for (i = 1; i < 7; i++) { + item_size = sizeof(struct btrfs_extent_item); + if (!skinny_metadata) + item_size += sizeof(struct btrfs_tree_block_info); + BUG_ON(blocks[i] < first_free); BUG_ON(blocks[i] < blocks[i - 1]); /* create extent item */ - itemoff -= sizeof(struct btrfs_extent_item) + - sizeof(struct btrfs_tree_block_info); + itemoff -= item_size; btrfs_set_disk_key_objectid(&disk_key, blocks[i]); - btrfs_set_disk_key_offset(&disk_key, leafsize); - btrfs_set_disk_key_type(&disk_key, BTRFS_EXTENT_ITEM_KEY); + if (skinny_metadata) { + btrfs_set_disk_key_type(&disk_key, + BTRFS_METADATA_ITEM_KEY); + btrfs_set_disk_key_offset(&disk_key, 0); + } else { + btrfs_set_disk_key_type(&disk_key, + BTRFS_EXTENT_ITEM_KEY); + btrfs_set_disk_key_offset(&disk_key, leafsize); + } btrfs_set_item_key(buf, &disk_key, nritems); btrfs_set_item_offset(buf, btrfs_item_nr(buf, nritems), itemoff); btrfs_set_item_size(buf, btrfs_item_nr(buf, nritems), - sizeof(struct btrfs_extent_item) + - sizeof(struct btrfs_tree_block_info)); + item_size); extent_item = btrfs_item_ptr(buf, nritems, struct btrfs_extent_item); btrfs_set_extent_refs(buf, extent_item, 1); |