diff options
Diffstat (limited to 'fs/ocfs2/ocfs2_fs.h')
| -rw-r--r-- | fs/ocfs2/ocfs2_fs.h | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h index f0101974f4f9..71306479c68f 100644 --- a/fs/ocfs2/ocfs2_fs.h +++ b/fs/ocfs2/ocfs2_fs.h @@ -156,6 +156,12 @@ #define OCFS2_FL_MODIFIABLE (0x000100FF) /* User modifiable flags */ /* + * Extent record flags (e_node.leaf.flags) + */ +#define OCFS2_EXT_UNWRITTEN (0x01) /* Extent is allocated but + * unwritten */ + +/* * ioctl commands */ #define OCFS2_IOC_GETFLAGS _IOR('f', 1, long) @@ -283,10 +289,21 @@ static unsigned char ocfs2_type_by_mode[S_IFMT >> S_SHIFT] = { /* * On disk extent record for OCFS2 * It describes a range of clusters on disk. + * + * Length fields are divided into interior and leaf node versions. + * This leaves room for a flags field (OCFS2_EXT_*) in the leaf nodes. */ struct ocfs2_extent_rec { /*00*/ __le32 e_cpos; /* Offset into the file, in clusters */ - __le32 e_clusters; /* Clusters covered by this extent */ + union { + __le32 e_int_clusters; /* Clusters covered by all children */ + struct { + __le16 e_leaf_clusters; /* Clusters covered by this + extent */ + __u8 e_reserved1; + __u8 e_flags; /* Extent flags */ + }; + }; __le64 e_blkno; /* Physical disk offset, in blocks */ /*10*/ }; |