[XFS] split ondisk vs incore versions of xfs_bmbt_rec_t

currently xfs_bmbt_rec_t is used both for ondisk extents as well as
host-endian ones. This patch adds a new xfs_bmbt_rec_host_t for the native
endian ones and cleans up the fallout. There have been various endianess
issues in the tracing / debug printf code that are fixed by this patch.

SGI-PV: 968563
SGI-Modid: xfs-linux-melb:xfs-kern:29318a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
diff --git a/fs/xfs/quota/xfs_qm.c b/fs/xfs/quota/xfs_qm.c
index 6ff0f4d..9567d18 100644
--- a/fs/xfs/quota/xfs_qm.c
+++ b/fs/xfs/quota/xfs_qm.c
@@ -1717,7 +1717,6 @@
 	xfs_extnum_t	idx;			/* extent record index */
 	xfs_ifork_t	*ifp;			/* inode fork pointer */
 	xfs_extnum_t	nextents;		/* number of extent entries */
-	xfs_bmbt_rec_t	*ep;			/* pointer to an extent entry */
 	int		error;
 
 	ASSERT(XFS_IS_REALTIME_INODE(ip));
@@ -1728,10 +1727,8 @@
 	}
 	rtblks = 0;
 	nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t);
-	for (idx = 0; idx < nextents; idx++) {
-		ep = xfs_iext_get_ext(ifp, idx);
-		rtblks += xfs_bmbt_get_blockcount(ep);
-	}
+	for (idx = 0; idx < nextents; idx++)
+		rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx));
 	*O_rtblks = (xfs_qcnt_t)rtblks;
 	return 0;
 }