[XFS] optimize dmapi event tests w/o dmapi config

SGI-PV: 969372
SGI-Modid: xfs-linux-melb:xfs-kern:29444a
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Vlad Apostolov <vapo@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>

fs/xfs/xfs_dmapi.h

@@ -67,11 +67,15 @@ typedef enum {
 #define HAVE_DM_RIGHT_T
 
 /* Defines for determining if an event message should be sent. */
+#ifdef HAVE_DMAPI
 #define	DM_EVENT_ENABLED(ip, event) ( \
 	unlikely (XFS_MTOVFS((ip)->i_mount)->vfs_flag & VFS_DMI) && \
 		( ((ip)->i_d.di_dmevmask & (1 << event)) || \
 		  ((ip)->i_mount->m_dmevmask & (1 << event)) ) \
 	)
+#else
+#define DM_EVENT_ENABLED(ip, event)	(0)
+#endif
 
 #define DM_XFS_VALID_FS_EVENTS		( \
 	(1 << DM_EVENT_PREUNMOUNT)	| \

fs/xfs/xfs_vfsops.c

@@ -572,6 +572,7 @@ xfs_unmount(
 	rip = mp->m_rootip;
 	rvp = XFS_ITOV(rip);
 
+#ifdef HAVE_DMAPI
 	if (vfsp->vfs_flag & VFS_DMI) {
 		error = XFS_SEND_PREUNMOUNT(mp, vfsp,
 				rvp, DM_RIGHT_NULL, rvp, DM_RIGHT_NULL,
@@ -584,7 +585,7 @@ xfs_unmount(
 		unmount_event_flags = (mp->m_dmevmask & (1<<DM_EVENT_UNMOUNT))?
 					0 : DM_FLAGS_UNWANTED;
 	}
-
+#endif
 	/*
 	 * First blow any referenced inode from this file system
 	 * out of the reference cache, and delete the timer.