Merge remote-tracking branch 'hid/for-next'

[karo-tx-linux.git] / fs / xfs / xfs_btree.h

diff --git a/fs/xfs/xfs_btree.h b/fs/xfs/xfs_btree.h
index c8473c7ef45e4c764fd61eb1bf6419cb1d98f4ea..91e34f21bacea773eaadecfc0a3c29595e912601 100644 (file)
--- a/fs/xfs/xfs_btree.h
+++ b/fs/xfs/xfs_btree.h
@@ -26,73 +26,6 @@ struct xfs_trans;
 
 extern kmem_zone_t     *xfs_btree_cur_zone;
 
-/*
- * This nonsense is to make -wlint happy.
- */
-#define        XFS_LOOKUP_EQ   ((xfs_lookup_t)XFS_LOOKUP_EQi)
-#define        XFS_LOOKUP_LE   ((xfs_lookup_t)XFS_LOOKUP_LEi)
-#define        XFS_LOOKUP_GE   ((xfs_lookup_t)XFS_LOOKUP_GEi)
-
-#define        XFS_BTNUM_BNO   ((xfs_btnum_t)XFS_BTNUM_BNOi)
-#define        XFS_BTNUM_CNT   ((xfs_btnum_t)XFS_BTNUM_CNTi)
-#define        XFS_BTNUM_BMAP  ((xfs_btnum_t)XFS_BTNUM_BMAPi)
-#define        XFS_BTNUM_INO   ((xfs_btnum_t)XFS_BTNUM_INOi)
-
-/*
- * Generic btree header.
- *
- * This is a combination of the actual format used on disk for short and long
- * format btrees.  The first three fields are shared by both format, but the
- * pointers are different and should be used with care.
- *
- * To get the size of the actual short or long form headers please use the size
- * macros below.  Never use sizeof(xfs_btree_block).
- *
- * The blkno, crc, lsn, owner and uuid fields are only available in filesystems
- * with the crc feature bit, and all accesses to them must be conditional on
- * that flag.
- */
-struct xfs_btree_block {
-       __be32          bb_magic;       /* magic number for block type */
-       __be16          bb_level;       /* 0 is a leaf */
-       __be16          bb_numrecs;     /* current # of data records */
-       union {
-               struct {
-                       __be32          bb_leftsib;
-                       __be32          bb_rightsib;
-
-                       __be64          bb_blkno;
-                       __be64          bb_lsn;
-                       uuid_t          bb_uuid;
-                       __be32          bb_owner;
-                       __le32          bb_crc;
-               } s;                    /* short form pointers */
-               struct  {
-                       __be64          bb_leftsib;
-                       __be64          bb_rightsib;
-
-                       __be64          bb_blkno;
-                       __be64          bb_lsn;
-                       uuid_t          bb_uuid;
-                       __be64          bb_owner;
-                       __le32          bb_crc;
-                       __be32          bb_pad; /* padding for alignment */
-               } l;                    /* long form pointers */
-       } bb_u;                         /* rest */
-};
-
-#define XFS_BTREE_SBLOCK_LEN   16      /* size of a short form block */
-#define XFS_BTREE_LBLOCK_LEN   24      /* size of a long form block */
-
-/* sizes of CRC enabled btree blocks */
-#define XFS_BTREE_SBLOCK_CRC_LEN       (XFS_BTREE_SBLOCK_LEN + 40)
-#define XFS_BTREE_LBLOCK_CRC_LEN       (XFS_BTREE_LBLOCK_LEN + 48)
-
-#define XFS_BTREE_SBLOCK_CRC_OFF \
-       offsetof(struct xfs_btree_block, bb_u.s.bb_crc)
-#define XFS_BTREE_LBLOCK_CRC_OFF \
-       offsetof(struct xfs_btree_block, bb_u.l.bb_crc)
-
 /*
  * Generic key, ptr and record wrapper structures.
  *
@@ -118,18 +51,33 @@ union xfs_btree_rec {
        xfs_inobt_rec_t         inobt;
 };
 
+/*
+ * This nonsense is to make -wlint happy.
+ */
+#define        XFS_LOOKUP_EQ   ((xfs_lookup_t)XFS_LOOKUP_EQi)
+#define        XFS_LOOKUP_LE   ((xfs_lookup_t)XFS_LOOKUP_LEi)
+#define        XFS_LOOKUP_GE   ((xfs_lookup_t)XFS_LOOKUP_GEi)
+
+#define        XFS_BTNUM_BNO   ((xfs_btnum_t)XFS_BTNUM_BNOi)
+#define        XFS_BTNUM_CNT   ((xfs_btnum_t)XFS_BTNUM_CNTi)
+#define        XFS_BTNUM_BMAP  ((xfs_btnum_t)XFS_BTNUM_BMAPi)
+#define        XFS_BTNUM_INO   ((xfs_btnum_t)XFS_BTNUM_INOi)
+
 /*
  * For logging record fields.
  */
-#define        XFS_BB_MAGIC            0x01
-#define        XFS_BB_LEVEL            0x02
-#define        XFS_BB_NUMRECS          0x04
-#define        XFS_BB_LEFTSIB          0x08
-#define        XFS_BB_RIGHTSIB         0x10
-#define        XFS_BB_BLKNO            0x20
+#define        XFS_BB_MAGIC            (1 << 0)
+#define        XFS_BB_LEVEL            (1 << 1)
+#define        XFS_BB_NUMRECS          (1 << 2)
+#define        XFS_BB_LEFTSIB          (1 << 3)
+#define        XFS_BB_RIGHTSIB         (1 << 4)
+#define        XFS_BB_BLKNO            (1 << 5)
+#define        XFS_BB_LSN              (1 << 6)
+#define        XFS_BB_UUID             (1 << 7)
+#define        XFS_BB_OWNER            (1 << 8)
 #define        XFS_BB_NUM_BITS         5
 #define        XFS_BB_ALL_BITS         ((1 << XFS_BB_NUM_BITS) - 1)
-#define        XFS_BB_NUM_BITS_CRC     8
+#define        XFS_BB_NUM_BITS_CRC     9
 #define        XFS_BB_ALL_BITS_CRC     ((1 << XFS_BB_NUM_BITS_CRC) - 1)
 
 /*
@@ -442,6 +390,8 @@ int xfs_btree_new_iroot(struct xfs_btree_cur *, int *, int *);
 int xfs_btree_insert(struct xfs_btree_cur *, int *);
 int xfs_btree_delete(struct xfs_btree_cur *, int *);
 int xfs_btree_get_rec(struct xfs_btree_cur *, union xfs_btree_rec **, int *);
+int xfs_btree_change_owner(struct xfs_btree_cur *cur, __uint64_t new_owner,
+                          struct list_head *buffer_list);
 
 /*
  * btree block CRC helpers