[XFS] Fixing KDB's xrwtrc command, also added the current process id into
the trace.

SGI-PV: 948300
SGI-Modid: xfs-linux-melb:xfs-kern:208069a

Signed-off-by: Yingping Lu <yingping@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 7d0ded0..2424a47 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -1372,10 +1372,10 @@
 		     (void*)(unsigned long)((toss_finish >> 32) & 0xffffffff),
 		     (void*)(unsigned long)(toss_finish & 0xffffffff),
 		     (void*)(unsigned long)current_cpu(),
-		     (void*)0,
-		     (void*)0,
-		     (void*)0,
-		     (void*)0);
+		     (void*)(unsigned long)current_pid(),
+		     (void*)NULL,
+		     (void*)NULL,
+		     (void*)NULL);
 }
 #else
 #define	xfs_itrunc_trace(tag, ip, flag, new_size, toss_start, toss_finish)