summaryrefslogtreecommitdiffstats
path: root/fs/ocfs2/ocfs2_fs.h
diff options
context:
space:
mode:
Diffstat (limited to 'fs/ocfs2/ocfs2_fs.h')
-rw-r--r--fs/ocfs2/ocfs2_fs.h31
1 files changed, 27 insertions, 4 deletions
diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h
index e61e218..7130647 100644
--- a/fs/ocfs2/ocfs2_fs.h
+++ b/fs/ocfs2/ocfs2_fs.h
@@ -86,7 +86,8 @@
OCFS2_SB(sb)->s_feature_incompat &= ~(mask)
#define OCFS2_FEATURE_COMPAT_SUPP OCFS2_FEATURE_COMPAT_BACKUP_SB
-#define OCFS2_FEATURE_INCOMPAT_SUPP OCFS2_FEATURE_INCOMPAT_LOCAL_MOUNT
+#define OCFS2_FEATURE_INCOMPAT_SUPP (OCFS2_FEATURE_INCOMPAT_LOCAL_MOUNT \
+ | OCFS2_FEATURE_INCOMPAT_SPARSE_ALLOC)
#define OCFS2_FEATURE_RO_COMPAT_SUPP 0
/*
@@ -155,6 +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)
@@ -282,10 +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*/
};
@@ -311,7 +329,10 @@ struct ocfs2_extent_list {
/*00*/ __le16 l_tree_depth; /* Extent tree depth from this
point. 0 means data extents
hang directly off this
- header (a leaf) */
+ header (a leaf)
+ NOTE: The high 8 bits cannot be
+ used - tree_depth is never that big.
+ */
__le16 l_count; /* Number of extent records */
__le16 l_next_free_rec; /* Next unused extent slot */
__le16 l_reserved1;
@@ -446,7 +467,9 @@ struct ocfs2_dinode {
__le32 i_ctime_nsec;
__le32 i_mtime_nsec;
__le32 i_attr;
- __le32 i_reserved1;
+ __le16 i_orphaned_slot; /* Only valid when OCFS2_ORPHANED_FL
+ was set in i_flags */
+ __le16 i_reserved1;
/*70*/ __le64 i_reserved2[8];
/*B8*/ union {
__le64 i_pad1; /* Generic way to refer to this
OpenPOWER on IntegriCloud