diff options
Diffstat (limited to 'fs/xfs/xfs_dir2_data.h')
| -rw-r--r-- | fs/xfs/xfs_dir2_data.h | 33 |
1 files changed, 16 insertions, 17 deletions
diff --git a/fs/xfs/xfs_dir2_data.h b/fs/xfs/xfs_dir2_data.h index aa6bf91c4228..ca02cc71e234 100644 --- a/fs/xfs/xfs_dir2_data.h +++ b/fs/xfs/xfs_dir2_data.h @@ -20,6 +20,22 @@ /* * Directory format 2, data block structures. + * + * A pure data block looks like the following drawing on disk: + * + * +-------------------------------------------------+ + * | xfs_dir2_data_hdr_t | + * +-------------------------------------------------+ + * | xfs_dir2_data_entry_t OR xfs_dir2_data_unused_t | + * | xfs_dir2_data_entry_t OR xfs_dir2_data_unused_t | + * | xfs_dir2_data_entry_t OR xfs_dir2_data_unused_t | + * | ... | + * +-------------------------------------------------+ + * | unused space | + * +-------------------------------------------------+ + * + * As all the entries are variable size structures the accessors in this + * file should be used to iterate over them. */ struct xfs_dabuf; @@ -103,23 +119,6 @@ typedef struct xfs_dir2_data_unused { __be16 tag; /* starting offset of us */ } xfs_dir2_data_unused_t; -typedef union { - xfs_dir2_data_entry_t entry; - xfs_dir2_data_unused_t unused; -} xfs_dir2_data_union_t; - -/* - * Generic data block structure, for xfs_db. - */ -typedef struct xfs_dir2_data { - xfs_dir2_data_hdr_t hdr; /* magic XFS_DIR2_DATA_MAGIC */ - xfs_dir2_data_union_t u[1]; -} xfs_dir2_data_t; - -/* - * Macros. - */ - /* * Size of a data entry. */ |