diff options
Diffstat (limited to 'ctree.h')
| -rw-r--r-- | ctree.h | 16 |
1 files changed, 16 insertions, 0 deletions
@@ -54,6 +54,9 @@ struct btrfs_trans_handle; /* directory objectid inside the root tree */ #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL +/* holds checksums of all the data extents */ +#define BTRFS_CSUM_TREE_OBJECTID 7ULL + /* oprhan objectid for tracking unlinked/truncated files */ #define BTRFS_ORPHAN_OBJECTID -5ULL @@ -66,6 +69,13 @@ struct btrfs_trans_handle; #define BTRFS_TREE_RELOC_OBJECTID -8ULL #define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL +/* + * extent checksums all have this objectid + * this allows them to share the logging tree + * for fsyncs + */ +#define BTRFS_EXTENT_CSUM_OBJECTID -10ULL + /* dummy objectid represents multiple objectids */ #define BTRFS_MULTIPLE_OBJECTIDS -255ULL @@ -583,6 +593,7 @@ struct btrfs_fs_info { struct btrfs_root *tree_root; struct btrfs_root *chunk_root; struct btrfs_root *dev_root; + struct btrfs_root *csum_root; /* the log root tree is a directory of all the other log roots */ struct btrfs_root *log_root_tree; @@ -688,6 +699,11 @@ struct btrfs_root { * csum items have the checksums for data in the extents */ #define BTRFS_CSUM_ITEM_KEY 120 +/* + * extent csums are stored in a separate tree and hold csums for + * an entire extent on disk. + */ +#define BTRFS_EXTENT_CSUM_KEY 128 /* * root items point to tree roots. There are typically in the root |