xfs: introduce xfs_rtalloc_defs.h

There are quite a few realtime device definitions shared with
userspace. Move them from xfs_rtalloc.h to xfs_rt_alloc_defs.h
so we don't need to share xfs_rtalloc.h with userspace anymore.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>

1 files changed, 41 insertions, 0 deletions

diff --git a/fs/xfs/xfs_format.h b/fs/xfs/xfs_format.h
index 2b4f16668123..62053744a0a6 100644
--- a/fs/xfs/xfs_format.h
+++ b/fs/xfs/xfs_format.h
@@ -28,6 +28,47 @@
  */
 
 /*
+ * RealTime Device format definitions
+ */
+
+/* Min and max rt extent sizes, specified in bytes */
+#define XFS_MAX_RTEXTSIZE       (1024 * 1024 * 1024)    /* 1GB */
+#define XFS_DFL_RTEXTSIZE       (64 * 1024)             /* 64kB */
+#define XFS_MIN_RTEXTSIZE       (4 * 1024)              /* 4kB */
+
+#define XFS_BLOCKSIZE(mp)       ((mp)->m_sb.sb_blocksize)
+#define XFS_BLOCKMASK(mp)       ((mp)->m_blockmask)
+#define XFS_BLOCKWSIZE(mp)      ((mp)->m_blockwsize)
+#define XFS_BLOCKWMASK(mp)      ((mp)->m_blockwmask)
+
+/*
+ * RT Summary and bit manipulation macros.
+ */
+#define XFS_SUMOFFS(mp,ls,bb)   ((int)((ls) * (mp)->m_sb.sb_rbmblocks + (bb)))
+#define XFS_SUMOFFSTOBLOCK(mp,s)        \
+        (((s) * (uint)sizeof(xfs_suminfo_t)) >> (mp)->m_sb.sb_blocklog)
+#define XFS_SUMPTR(mp,bp,so)    \
+        ((xfs_suminfo_t *)((bp)->b_addr + \
+                (((so) * (uint)sizeof(xfs_suminfo_t)) & XFS_BLOCKMASK(mp))))
+
+#define XFS_BITTOBLOCK(mp,bi)   ((bi) >> (mp)->m_blkbit_log)
+#define XFS_BLOCKTOBIT(mp,bb)   ((bb) << (mp)->m_blkbit_log)
+#define XFS_BITTOWORD(mp,bi)    \
+        ((int)(((bi) >> XFS_NBWORDLOG) & XFS_BLOCKWMASK(mp)))
+
+#define XFS_RTMIN(a,b)  ((a) < (b) ? (a) : (b))
+#define XFS_RTMAX(a,b)  ((a) > (b) ? (a) : (b))
+
+#define XFS_RTLOBIT(w)  xfs_lowbit32(w)
+#define XFS_RTHIBIT(w)  xfs_highbit32(w)
+
+#if XFS_BIG_BLKNOS
+#define XFS_RTBLOCKLOG(b)       xfs_highbit64(b)
+#else
+#define XFS_RTBLOCKLOG(b)       xfs_highbit32(b)
+#endif
+
+/*
  * Dquot and dquot block format definitions
  */
 #define XFS_DQUOT_MAGIC         0x4451          /* 'DQ' */