ocfs2: Add suballoc_loc to metadata blocks.

We need a suballoc_loc field on any suballocated block.  Define them.

Signed-off-by: Joel Becker <joel.becker@oracle.com>

1 files changed, 24 insertions, 5 deletions

diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h
index 888ba4ec42c6..a17bce591ee3 100644
--- a/fs/ocfs2/ocfs2_fs.h
+++ b/fs/ocfs2/ocfs2_fs.h
@@ -507,7 +507,10 @@ struct ocfs2_extent_block
                                            block group */
         __le32 h_fs_generation;         /* Must match super block */
         __le64 h_blkno;                 /* Offset on disk, in blocks */
-/*20*/  __le64 h_reserved3;
+/*20*/  __le64 h_suballoc_loc;          /* Suballocator block group this
+                                           eb belongs to.  Only valid
+                                           if allocated from a
+                                           discontiguous block group */
         __le64 h_next_leaf_blk;         /* Offset on disk, in blocks,
                                            of next leaf header pointing
                                            to data */
@@ -674,7 +677,11 @@ struct ocfs2_dinode {
 /*80*/  struct ocfs2_block_check i_check;       /* Error checking */
 /*88*/  __le64 i_dx_root;               /* Pointer to dir index root block */
 /*90*/  __le64 i_refcount_loc;
-        __le64 i_reserved2[4];
+        __le64 i_suballoc_loc;          /* Suballocator block group this
+                                           inode belongs to.  Only valid
+                                           if allocated from a
+                                           discontiguous block group */
+/*A0*/  __le64 i_reserved2[3];
 /*B8*/  union {
                 __le64 i_pad1;          /* Generic way to refer to this
                                            64bit union */
@@ -809,7 +816,12 @@ struct ocfs2_dx_root_block {
         __le32          dr_reserved2;
         __le64          dr_free_blk;            /* Pointer to head of free
                                                  * unindexed block list. */
-        __le64          dr_reserved3[15];
+        __le64          dr_suballoc_loc;        /* Suballocator block group
+                                                   this root belongs to.
+                                                   Only valid if allocated
+                                                   from a discontiguous
+                                                   block group */
+        __le64          dr_reserved3[14];
         union {
                 struct ocfs2_extent_list dr_list; /* Keep this aligned to 128
                                                    * bits for maximum space
@@ -929,7 +941,11 @@ struct ocfs2_refcount_block {
 /*40*/  __le32 rf_generation;           /* generation number. all be the same
                                          * for the same refcount tree. */
         __le32 rf_reserved0;
-        __le64 rf_reserved1[7];
+        __le64 rf_suballoc_loc;         /* Suballocator block group this
+                                           refcount block belongs to. Only
+                                           valid if allocated from a
+                                           discontiguous block group */
+/*50*/  __le64 rf_reserved1[6];
 /*80*/  union {
                 struct ocfs2_refcount_list rf_records;  /* List of refcount
                                                           records */
@@ -1041,7 +1057,10 @@ struct ocfs2_xattr_block {
                                         real xattr or a xattr tree. */
         __le16  xb_reserved0;
         __le32  xb_reserved1;
-        __le64  xb_reserved2;
+        __le64  xb_suballoc_loc;        /* Suballocator block group this
+                                           xattr block belongs to. Only
+                                           valid if allocated from a
+                                           discontiguous block group */
 /*30*/  union {
                 struct ocfs2_xattr_header xb_header; /* xattr header if this
                                                         block contains xattr */