1 files changed, 61 insertions, 2 deletions

diff --git a/fs/xfs/libxfs/xfs_log_format.h b/fs/xfs/libxfs/xfs_log_format.h
index e8f49c029ff0..a6eed43fa7cd 100644
--- a/fs/xfs/libxfs/xfs_log_format.h
+++ b/fs/xfs/libxfs/xfs_log_format.h
@@ -110,7 +110,9 @@ static inline uint xlog_get_cycle(char *ptr)
 #define XLOG_REG_TYPE_COMMIT            18
 #define XLOG_REG_TYPE_TRANSHDR          19
 #define XLOG_REG_TYPE_ICREATE           20
-#define XLOG_REG_TYPE_MAX               20
+#define XLOG_REG_TYPE_RUI_FORMAT        21
+#define XLOG_REG_TYPE_RUD_FORMAT        22
+#define XLOG_REG_TYPE_MAX               22
 
 /*
  * Flags to log operation header
@@ -227,6 +229,8 @@ typedef struct xfs_trans_header {
 #define XFS_LI_DQUOT            0x123d
 #define XFS_LI_QUOTAOFF         0x123e
 #define XFS_LI_ICREATE          0x123f
+#define XFS_LI_RUI              0x1240  /* rmap update intent */
+#define XFS_LI_RUD              0x1241
 
 #define XFS_LI_TYPE_DESC \
         { XFS_LI_EFI,           "XFS_LI_EFI" }, \
@@ -236,7 +240,9 @@ typedef struct xfs_trans_header {
         { XFS_LI_BUF,           "XFS_LI_BUF" }, \
         { XFS_LI_DQUOT,         "XFS_LI_DQUOT" }, \
         { XFS_LI_QUOTAOFF,      "XFS_LI_QUOTAOFF" }, \
-        { XFS_LI_ICREATE,       "XFS_LI_ICREATE" }
+        { XFS_LI_ICREATE,       "XFS_LI_ICREATE" }, \
+        { XFS_LI_RUI,           "XFS_LI_RUI" }, \
+        { XFS_LI_RUD,           "XFS_LI_RUD" }
 
 /*
  * Inode Log Item Format definitions.
@@ -604,6 +610,59 @@ typedef struct xfs_efd_log_format_64 {
 } xfs_efd_log_format_64_t;
 
 /*
+ * RUI/RUD (reverse mapping) log format definitions
+ */
+struct xfs_map_extent {
+        __uint64_t              me_owner;
+        __uint64_t              me_startblock;
+        __uint64_t              me_startoff;
+        __uint32_t              me_len;
+        __uint32_t              me_flags;
+};
+
+/* rmap me_flags: upper bits are flags, lower byte is type code */
+#define XFS_RMAP_EXTENT_MAP             1
+#define XFS_RMAP_EXTENT_UNMAP           3
+#define XFS_RMAP_EXTENT_CONVERT         5
+#define XFS_RMAP_EXTENT_ALLOC           7
+#define XFS_RMAP_EXTENT_FREE            8
+#define XFS_RMAP_EXTENT_TYPE_MASK       0xFF
+
+#define XFS_RMAP_EXTENT_ATTR_FORK       (1U << 31)
+#define XFS_RMAP_EXTENT_BMBT_BLOCK      (1U << 30)
+#define XFS_RMAP_EXTENT_UNWRITTEN       (1U << 29)
+
+#define XFS_RMAP_EXTENT_FLAGS           (XFS_RMAP_EXTENT_TYPE_MASK | \
+                                         XFS_RMAP_EXTENT_ATTR_FORK | \
+                                         XFS_RMAP_EXTENT_BMBT_BLOCK | \
+                                         XFS_RMAP_EXTENT_UNWRITTEN)
+
+/*
+ * This is the structure used to lay out an rui log item in the
+ * log.  The rui_extents field is a variable size array whose
+ * size is given by rui_nextents.
+ */
+struct xfs_rui_log_format {
+        __uint16_t              rui_type;       /* rui log item type */
+        __uint16_t              rui_size;       /* size of this item */
+        __uint32_t              rui_nextents;   /* # extents to free */
+        __uint64_t              rui_id;         /* rui identifier */
+        struct xfs_map_extent   rui_extents[1]; /* array of extents to rmap */
+};
+
+/*
+ * This is the structure used to lay out an rud log item in the
+ * log.  The rud_extents array is a variable size array whose
+ * size is given by rud_nextents;
+ */
+struct xfs_rud_log_format {
+        __uint16_t              rud_type;       /* rud log item type */
+        __uint16_t              rud_size;       /* size of this item */
+        __uint32_t              __pad;
+        __uint64_t              rud_rui_id;     /* id of corresponding rui */
+};
+
+/*
  * Dquot Log format definitions.
  *
  * The first two fields must be the type and size fitting into