xfs: merge xfs_ag.h into xfs_format.h

More on-disk format consolidation.  A few declarations that weren't on-disk
format related move into better suitable spots.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

diff --git a/fs/xfs/xfs_icache.h b/fs/xfs/xfs_icache.h
index 46748b8..62f1f91 100644
--- a/fs/xfs/xfs_icache.h
+++ b/fs/xfs/xfs_icache.h
@@ -34,6 +34,14 @@
 #define SYNC_TRYLOCK		0x0002  /* only try to lock inodes */
 
 /*
+ * tags for inode radix tree
+ */
+#define XFS_ICI_NO_TAG		(-1)	/* special flag for an untagged lookup
+					   in xfs_inode_ag_iterator */
+#define XFS_ICI_RECLAIM_TAG	0	/* inode is to be reclaimed */
+#define XFS_ICI_EOFBLOCKS_TAG	1	/* inode has blocks beyond EOF */
+
+/*
  * Flags for xfs_iget()
  */
 #define XFS_IGET_CREATE		0x1